diff --git a/src/controllers/AuthController.ts b/src/controllers/AuthController.ts
index cddb677..9672de5 100644
--- a/src/controllers/AuthController.ts
+++ b/src/controllers/AuthController.ts
@@ -70,7 +70,6 @@ export class AuthController {
 		if (refresh_token && refresh_token.length != 0 && refreshAuth.token == undefined) {
 			refreshAuth.token = refresh_token;
 		}
-		console.log(req.headers)
 		let auth;
 		try {
 			auth = await refreshAuth.toAuth();
diff --git a/src/controllers/TrackController.ts b/src/controllers/TrackController.ts
index 1f74193..f03718f 100644
--- a/src/controllers/TrackController.ts
+++ b/src/controllers/TrackController.ts
@@ -1,9 +1,9 @@
 import { Authorized, Body, Delete, Get, JsonController, OnUndefined, Param, Post, Put } from 'routing-controllers';
 import { OpenAPI, ResponseSchema } from 'routing-controllers-openapi';
 import { getConnectionManager, Repository } from 'typeorm';
-import { EntityFromBody } from 'typeorm-routing-controllers-extensions';
-import { TrackIdsNotMatchingError, TrackNotFoundError } from "../errors/TrackErrors";
+import { TrackIdsNotMatchingError, TrackLapTimeCantBeNegativeError, TrackNotFoundError } from "../errors/TrackErrors";
 import { CreateTrack } from '../models/actions/CreateTrack';
+import { UpdateTrack } from '../models/actions/UpdateTrack';
 import { Track } from '../models/entities/Track';
 import { ResponseEmpty } from '../models/responses/ResponseEmpty';
 import { ResponseTrack } from '../models/responses/ResponseTrack';
@@ -48,6 +48,7 @@ export class TrackController {
 	@Post()
 	@Authorized("TRACK:CREATE")
 	@ResponseSchema(ResponseTrack)
+	@ResponseSchema(TrackLapTimeCantBeNegativeError, { statusCode: 406 })
 	@OpenAPI({ description: "Create a new track. <br> Please remember that the track\'s distance must be greater than 0." })
 	async post(
 		@Body({ validate: true })
@@ -61,20 +62,21 @@ export class TrackController {
 	@ResponseSchema(ResponseTrack)
 	@ResponseSchema(TrackNotFoundError, { statusCode: 404 })
 	@ResponseSchema(TrackIdsNotMatchingError, { statusCode: 406 })
+	@ResponseSchema(TrackLapTimeCantBeNegativeError, { statusCode: 406 })
 	@OpenAPI({ description: "Update the track whose id you provided. <br> Please remember that ids can't be changed." })
-	async put(@Param('id') id: number, @EntityFromBody() track: Track) {
+	async put(@Param('id') id: number, @Body({ validate: true }) updateTrack: UpdateTrack) {
 		let oldTrack = await this.trackRepository.findOne({ id: id });
 
 		if (!oldTrack) {
 			throw new TrackNotFoundError();
 		}
 
-		if (oldTrack.id != track.id) {
+		if (oldTrack.id != updateTrack.id) {
 			throw new TrackIdsNotMatchingError();
 		}
+		await this.trackRepository.save(await updateTrack.updateTrack(oldTrack));
 
-		await this.trackRepository.save(track);
-		return new ResponseTrack(track);
+		return new ResponseTrack(await this.trackRepository.findOne({ id: id }));
 	}
 
 	@Delete('/:id')
diff --git a/src/errors/TrackErrors.ts b/src/errors/TrackErrors.ts
index 7d4cfa9..e3d1902 100644
--- a/src/errors/TrackErrors.ts
+++ b/src/errors/TrackErrors.ts
@@ -22,4 +22,15 @@ export class TrackIdsNotMatchingError extends NotAcceptableError {
 
 	@IsString()
 	message = "The ids don't match! \n And if you wanted to change a track's id: This isn't allowed"
+}
+
+/**
+ * Error to throw when a track's lap time is set to a negative value.
+ */
+export class TrackLapTimeCantBeNegativeError extends NotAcceptableError {
+	@IsString()
+	name = "TrackLapTimeCantBeNegativeError"
+
+	@IsString()
+	message = "The minimum lap time you provided is negative - That isn't possible. \n If you wanted to disable it: Just set it to 0/null."
 }
\ No newline at end of file
diff --git a/src/models/actions/CreateTrack.ts b/src/models/actions/CreateTrack.ts
index f04e55b..fdeae71 100644
--- a/src/models/actions/CreateTrack.ts
+++ b/src/models/actions/CreateTrack.ts
@@ -1,4 +1,5 @@
-import { IsInt, IsNotEmpty, IsPositive, IsString } from 'class-validator';
+import { IsInt, IsNotEmpty, IsOptional, IsPositive, IsString } from 'class-validator';
+import { TrackLapTimeCantBeNegativeError } from '../../errors/TrackErrors';
 import { Track } from '../entities/Track';
 
 /**
@@ -19,6 +20,14 @@ export class CreateTrack {
     @IsPositive()
     distance: number;
 
+    /**
+     * The minimum time a runner should take to run a lap on this track (in seconds).
+     * Will be used for fraud detection.
+     */
+    @IsInt()
+    @IsOptional()
+    minimumLapTime: number;
+
     /**
      * Creates a new Track entity from this.
      */
@@ -27,6 +36,10 @@ export class CreateTrack {
 
         newTrack.name = this.name;
         newTrack.distance = this.distance;
+        newTrack.minimumLapTime = this.minimumLapTime;
+        if (this.minimumLapTime < 0) {
+            throw new TrackLapTimeCantBeNegativeError();
+        }
 
         return newTrack;
     }
diff --git a/src/models/actions/UpdateTrack.ts b/src/models/actions/UpdateTrack.ts
new file mode 100644
index 0000000..bc64d54
--- /dev/null
+++ b/src/models/actions/UpdateTrack.ts
@@ -0,0 +1,50 @@
+import { IsInt, IsNotEmpty, IsOptional, IsPositive, IsString } from 'class-validator';
+import { TrackLapTimeCantBeNegativeError } from '../../errors/TrackErrors';
+import { Track } from '../entities/Track';
+
+/**
+ * This class is used to update a Track entity (via put request).
+ */
+export class UpdateTrack {
+    /**
+     * The updated track's id.
+     * This shouldn't have changed but it is here in case anyone ever wants to enable id changes (whyever they would want to).
+     */
+    @IsInt()
+    id: number;
+
+    @IsString()
+    @IsNotEmpty()
+    name: string;
+
+    /**
+     * The updated track's distance in meters (must be greater than 0).
+     */
+    @IsInt()
+    @IsPositive()
+    distance: number;
+
+    /**
+     * The minimum time a runner should take to run a lap on this track (in seconds).
+     * Will be used for fraud detection.
+     */
+    @IsInt()
+    @IsOptional()
+    minimumLapTime: number;
+
+
+    /**
+     * Update a Track entity based on this.
+     * @param track The track that shall be updated.
+     */
+    public updateTrack(track: Track): Track {
+        track.name = this.name;
+        track.distance = this.distance;
+        track.minimumLapTime = this.minimumLapTime;
+        if (this.minimumLapTime < 0) {
+            throw new TrackLapTimeCantBeNegativeError();
+        }
+
+        return track;
+    }
+}
\ No newline at end of file
diff --git a/src/models/entities/Track.ts b/src/models/entities/Track.ts
index 22544d0..df18762 100644
--- a/src/models/entities/Track.ts
+++ b/src/models/entities/Track.ts
@@ -1,6 +1,7 @@
 import {
   IsInt,
   IsNotEmpty,
+  IsOptional,
   IsPositive,
   IsString
 } from "class-validator";
@@ -18,7 +19,7 @@ export class Track {
    */
   @PrimaryGeneratedColumn()
   @IsInt()
-  id: number;;
+  id: number;
 
   /**
    * The track's name.
@@ -38,6 +39,15 @@ export class Track {
   @IsPositive()
   distance: number;
 
+  /**
+   * The minimum time a runner should take to run a lap on this track (in seconds).
+   * Will be used for fraud detection.
+   */
+  @Column({ nullable: true })
+  @IsInt()
+  @IsOptional()
+  minimumLapTime?: number;
+
   /**
    * Used to link scan stations to a certain track.
    * This makes the configuration of the scan stations easier.
diff --git a/src/models/responses/ResponseTrack.ts b/src/models/responses/ResponseTrack.ts
index 83da863..27ef813 100644
--- a/src/models/responses/ResponseTrack.ts
+++ b/src/models/responses/ResponseTrack.ts
@@ -1,4 +1,5 @@
-import { IsInt, IsString } from "class-validator";
+import { IsInt, IsOptional, IsString } from "class-validator";
+import { TrackLapTimeCantBeNegativeError } from '../../errors/TrackErrors';
 import { Track } from '../entities/Track';
 
 /**
@@ -23,6 +24,14 @@ export class ResponseTrack {
     @IsInt()
     distance: number;
 
+    /**
+     * The minimum time a runner should take to run a lap on this track (in seconds).
+     * Will be used for fraud detection.
+     */
+    @IsInt()
+    @IsOptional()
+    minimumLapTime?: number;
+
     /**
      * Creates a ResponseTrack object from a track.
      * @param track The track the response shall be build for.
@@ -31,5 +40,9 @@ export class ResponseTrack {
         this.id = track.id;
         this.name = track.name;
         this.distance = track.distance;
+        this.minimumLapTime = track.minimumLapTime;
+        if (this.minimumLapTime < 0) {
+            throw new TrackLapTimeCantBeNegativeError();
+        }
     }
 }
diff --git a/src/tests/tracks.spec.ts b/src/tests/tracks.spec.ts
deleted file mode 100644
index 81e4850..0000000
--- a/src/tests/tracks.spec.ts
+++ /dev/null
@@ -1,112 +0,0 @@
-import axios from 'axios';
-import { config } from '../config';
-const base = "http://localhost:" + config.internal_port
-
-let access_token;
-let axios_config;
-
-beforeAll(async () => {
-	const res = await axios.post(base + '/api/auth/login', { username: "demo", password: "demo" });
-	access_token = res.data["access_token"];
-	axios_config = {
-		headers: { "authorization": "Bearer " + access_token },
-		validateStatus: undefined
-	};
-});
-
-describe('GET /api/tracks', () => {
-	it('basic get should return 200', async () => {
-		const res = await axios.get(base + '/api/tracks', axios_config);
-		expect(res.status).toEqual(200);
-		expect(res.headers['content-type']).toContain("application/json")
-	});
-	it('correct distance input should return 200', async () => {
-		const res = await axios.post(base + '/api/tracks', {
-			"name": "string",
-			"distance": 400
-		}, axios_config);
-		expect(res.status).toEqual(200);
-		expect(res.headers['content-type']).toContain("application/json")
-	});
-});
-// ---------------
-describe('POST /api/tracks', () => {
-	it('illegal distance input should return 400', async () => {
-		const res = await axios.post(base + '/api/tracks', {
-			"name": "string",
-			"distance": -1
-		}, axios_config);
-		expect(res.status).toEqual(400);
-		expect(res.headers['content-type']).toContain("application/json")
-	});
-	it('correct distance input should return 200', async () => {
-		const res = await axios.post(base + '/api/tracks', {
-			"name": "string",
-			"distance": 400
-		}, axios_config);
-		expect(res.status).toEqual(200);
-		expect(res.headers['content-type']).toContain("application/json")
-	});
-});
-// ---------------
-describe('adding + getting tracks', () => {
-	it('correct distance input should return 200', async () => {
-		const res = await axios.post(base + '/api/tracks', {
-			"name": "string",
-			"distance": 1000
-		}, axios_config);
-		expect(res.status).toEqual(200);
-		expect(res.headers['content-type']).toContain("application/json")
-	});
-	it('check if track was added', async () => {
-		const res = await axios.get(base + '/api/tracks', axios_config);
-		expect(res.status).toEqual(200);
-		expect(res.headers['content-type']).toContain("application/json")
-		let added_track = res.data[res.data.length - 1]
-		delete added_track.id
-		expect(added_track).toEqual({
-			"name": "string",
-			"distance": 1000
-		})
-	});
-});
-// ---------------
-describe('adding + getting + updating', () => {
-	let added_track;
-	it('correct distance input should return 200', async () => {
-		const res = await axios.post(base + '/api/tracks', {
-			"name": "string",
-			"distance": 1500
-		}, axios_config);
-		expect(res.status).toEqual(200);
-		expect(res.headers['content-type']).toContain("application/json");
-		added_track = res.data;
-	});
-	it('get should return 200', async () => {
-		const res1 = await axios.get(base + '/api/tracks/' + added_track.id, axios_config);
-		expect(res1.status).toEqual(200);
-		expect(res1.headers['content-type']).toContain("application/json")
-		const compareTrack = res1.data;
-		expect(compareTrack).toEqual(added_track)
-	})
-	it('get should return 200', async () => {
-		const res2 = await axios.put(base + '/api/tracks/' + added_track.id, {
-			"id": added_track.id,
-			"name": "apitrack",
-			"distance": 5100
-		}, axios_config);
-		expect(res2.status).toEqual(200);
-		expect(res2.headers['content-type']).toContain("application/json")
-	})
-	it('get should return 200', async () => {
-		const res3 = await axios.get(base + '/api/tracks/' + added_track.id, axios_config);
-		expect(res3.status).toEqual(200);
-		expect(res3.headers['content-type']).toContain("application/json")
-		let added_track2 = res3.data;
-		delete added_track2.id
-		expect(added_track2).toEqual({
-			"name": "apitrack",
-			"distance": 5100
-		})
-	});
-});
diff --git a/src/tests/tracks/track_add.spec.ts b/src/tests/tracks/track_add.spec.ts
new file mode 100644
index 0000000..7f39f8d
--- /dev/null
+++ b/src/tests/tracks/track_add.spec.ts
@@ -0,0 +1,90 @@
+import axios from 'axios';
+import { config } from '../../config';
+const base = "http://localhost:" + config.internal_port
+
+let access_token;
+let axios_config;
+
+beforeAll(async () => {
+	const res = await axios.post(base + '/api/auth/login', { username: "demo", password: "demo" });
+	access_token = res.data["access_token"];
+	axios_config = {
+		headers: { "authorization": "Bearer " + access_token },
+		validateStatus: undefined
+	};
+});
+
+
+describe('POST /api/tracks illegally', () => {
+	it('no distance input should return 400', async () => {
+		const res = await axios.post(base + '/api/tracks', {
+			"name": "string",
+		}, axios_config);
+		expect(res.status).toEqual(400);
+		expect(res.headers['content-type']).toContain("application/json")
+	});
+	it('illegal distance input should return 400', async () => {
+		const res = await axios.post(base + '/api/tracks', {
+			"name": "string",
+			"distance": -1
+		}, axios_config);
+		expect(res.status).toEqual(400);
+		expect(res.headers['content-type']).toContain("application/json")
+	});
+	it('negative minimum lap time input should return 406', async () => {
+		const res = await axios.post(base + '/api/tracks', {
+			"name": "string",
+			"distance": 200,
+			"minimumLapTime": -1
+		}, axios_config);
+		expect(res.status).toEqual(406);
+		expect(res.headers['content-type']).toContain("application/json")
+	});
+});
+// ---------------
+describe('POST /api/tracks successfully', () => {
+	it('creating a track with the minimum amount of parameters should return 200', async () => {
+		const res = await axios.post(base + '/api/tracks', {
+			"name": "testtrack",
+			"distance": 200,
+		}, axios_config);
+		expect(res.status).toEqual(200);
+		expect(res.headers['content-type']).toContain("application/json");
+		delete res.data.id;
+		expect(res.data).toEqual({
+			"name": "testtrack",
+			"distance": 200,
+			"minimumLapTime": null
+		})
+	});
+	it('creating a track with all parameters (optional set to null) should return 200', async () => {
+		const res = await axios.post(base + '/api/tracks', {
+			"name": "testtrack",
+			"distance": 200,
+			"minimumLapTime": null
+		}, axios_config);
+		expect(res.status).toEqual(200);
+		expect(res.headers['content-type']).toContain("application/json");
+		delete res.data.id;
+		expect(res.data).toEqual({
+			"name": "testtrack",
+			"distance": 200,
+			"minimumLapTime": null
+		})
+	});
+	it('creating a track with all parameters should return 200', async () => {
+		const res = await axios.post(base + '/api/tracks', {
+			"name": "testtrack",
+			"distance": 200,
+			"minimumLapTime": 123
+		}, axios_config);
+		expect(res.status).toEqual(200);
+		expect(res.headers['content-type']).toContain("application/json");
+		delete res.data.id;
+		expect(res.data).toEqual({
+			"name": "testtrack",
+			"distance": 200,
+			"minimumLapTime": 123
+		})
+	});
+});
diff --git a/src/tests/tracks/track_delete.spec.ts b/src/tests/tracks/track_delete.spec.ts
new file mode 100644
index 0000000..cb7ae89
--- /dev/null
+++ b/src/tests/tracks/track_delete.spec.ts
@@ -0,0 +1,53 @@
+import axios from 'axios';
+import { config } from '../../config';
+const base = "http://localhost:" + config.internal_port
+
+let access_token;
+let axios_config;
+
+beforeAll(async () => {
+	const res = await axios.post(base + '/api/auth/login', { username: "demo", password: "demo" });
+	access_token = res.data["access_token"];
+	axios_config = {
+		headers: { "authorization": "Bearer " + access_token },
+		validateStatus: undefined
+	};
+});
+
+// ---------------
+describe('DETELE track', () => {
+	let added_track
+	it('creating a track with the minimum amount of parameters should return 200', async () => {
+		const res = await axios.post(base + '/api/tracks', {
+			"name": "testtrack",
+			"distance": 200,
+		}, axios_config);
+		expect(res.status).toEqual(200);
+		expect(res.headers['content-type']).toContain("application/json");
+		added_track = res.data
+	});
+	it('delete track', async () => {
+		const res2 = await axios.delete(base + '/api/tracks/' + added_track.id, axios_config);
+		expect(res2.status).toEqual(200);
+		expect(res2.headers['content-type']).toContain("application/json")
+		let deleted_track = res2.data
+		delete deleted_track.id;
+		expect(res2.data).toEqual({
+			"name": "testtrack",
+			"distance": 200,
+			"minimumLapTime": null
+		});
+	});
+	it('check if track really was deleted', async () => {
+		const res3 = await axios.get(base + '/api/tracks/' + added_track.id, axios_config);
+		expect(res3.status).toEqual(404);
+		expect(res3.headers['content-type']).toContain("application/json")
+	});
+});
+// ---------------
+describe('DELETE track (non-existant)', () => {
+	it('delete', async () => {
+		const res2 = await axios.delete(base + '/api/tracks/0', axios_config);
+		expect(res2.status).toEqual(204);
+	});
+});
diff --git a/src/tests/tracks/track_update.spec.ts b/src/tests/tracks/track_update.spec.ts
new file mode 100644
index 0000000..ab2b707
--- /dev/null
+++ b/src/tests/tracks/track_update.spec.ts
@@ -0,0 +1,98 @@
+import axios from 'axios';
+import { config } from '../../config';
+const base = "http://localhost:" + config.internal_port
+
+let access_token;
+let axios_config;
+
+beforeAll(async () => {
+	const res = await axios.post(base + '/api/auth/login', { username: "demo", password: "demo" });
+	access_token = res.data["access_token"];
+	axios_config = {
+		headers: { "authorization": "Bearer " + access_token },
+		validateStatus: undefined
+	};
+});
+
+describe('adding + updating illegally', () => {
+	let added_track;
+	it('correct distance input should return 200', async () => {
+		const res = await axios.post(base + '/api/tracks', {
+			"name": "apitrack",
+			"distance": 1500
+		}, axios_config);
+		expect(res.status).toEqual(200);
+		expect(res.headers['content-type']).toContain("application/json");
+		added_track = res.data;
+	});
+	it('update with negative distance should return 400', async () => {
+		const res2 = await axios.put(base + '/api/tracks/' + added_track.id, {
+			"id": added_track.id,
+			"name": "apitrack",
+			"distance": -1
+		}, axios_config);
+		expect(res2.status).toEqual(400);
+		expect(res2.headers['content-type']).toContain("application/json")
+	});
+	it('update with negative laptime should return 406', async () => {
+		const res2 = await axios.put(base + '/api/tracks/' + added_track.id, {
+			"id": added_track.id,
+			"name": "apitrack",
+			"distance": 2,
+			"minimumLapTime": -1
+		}, axios_config);
+		expect(res2.status).toEqual(406);
+		expect(res2.headers['content-type']).toContain("application/json")
+	});
+});
+// ---------------
+describe('adding + updating successfilly', () => {
+	let added_track;
+	it('correct distance input should return 200', async () => {
+		const res = await axios.post(base + '/api/tracks', {
+			"name": "apitrack2",
+			"distance": 1500
+		}, axios_config);
+		expect(res.status).toEqual(200);
+		expect(res.headers['content-type']).toContain("application/json");
+		added_track = res.data;
+	});
+	it('valid name change should return 200', async () => {
+		const res2 = await axios.put(base + '/api/tracks/' + added_track.id, {
+			"id": added_track.id,
+			"name": "apitrackk",
+			"distance": 1500
+		}, axios_config);
+		expect(res2.status).toEqual(200);
+		expect(res2.headers['content-type']).toContain("application/json")
+	});
+	it('valid distance change should return 200', async () => {
+		const res2 = await axios.put(base + '/api/tracks/' + added_track.id, {
+			"id": added_track.id,
+			"name": "apitrack2",
+			"distance": 5100
+		}, axios_config);
+		expect(res2.status).toEqual(200);
+		expect(res2.headers['content-type']).toContain("application/json")
+	});
+	it('valid laptime change (to a set number) should return 200', async () => {
+		const res2 = await axios.put(base + '/api/tracks/' + added_track.id, {
+			"id": added_track.id,
+			"name": "apitrack2",
+			"distance": 5100,
+			"minimumLapTime": 3
+		}, axios_config);
+		expect(res2.status).toEqual(200);
+		expect(res2.headers['content-type']).toContain("application/json")
+	});
+	it('valid laptime change (to a set null) should return 200', async () => {
+		const res2 = await axios.put(base + '/api/tracks/' + added_track.id, {
+			"id": added_track.id,
+			"name": "apitrack2",
+			"distance": 5100,
+			"minimumLapTime": null
+		}, axios_config);
+		expect(res2.status).toEqual(200);
+		expect(res2.headers['content-type']).toContain("application/json")
+	});
+});
diff --git a/src/tests/tracks/tracks_get.spec.ts b/src/tests/tracks/tracks_get.spec.ts
new file mode 100644
index 0000000..1057034
--- /dev/null
+++ b/src/tests/tracks/tracks_get.spec.ts
@@ -0,0 +1,49 @@
+import axios from 'axios';
+import { config } from '../../config';
+const base = "http://localhost:" + config.internal_port
+
+let access_token;
+let axios_config;
+
+beforeAll(async () => {
+	const res = await axios.post(base + '/api/auth/login', { username: "demo", password: "demo" });
+	access_token = res.data["access_token"];
+	axios_config = {
+		headers: { "authorization": "Bearer " + access_token },
+		validateStatus: undefined
+	};
+});
+
+describe('GET /api/tracks sucessfully', () => {
+	it('basic get should return 200', async () => {
+		const res = await axios.get(base + '/api/tracks', axios_config);
+		expect(res.status).toEqual(200);
+		expect(res.headers['content-type']).toContain("application/json")
+	});
+});
+// ---------------
+describe('GET /api/tracks illegally', () => {
+	it('get for non-existant track should return 404', async () => {
+		const res = await axios.get(base + '/api/tracks/-1', axios_config);
+		expect(res.status).toEqual(404);
+		expect(res.headers['content-type']).toContain("application/json")
+	});
+});
+// ---------------
+describe('adding + getting tracks', () => {
+	let added_track;
+	it('correct distance input should return 200', async () => {
+		const res = await axios.post(base + '/api/tracks', {
+			"name": "string",
+			"distance": 1000
+		}, axios_config);
+		added_track = res.data;
+		expect(res.status).toEqual(200);
+		expect(res.headers['content-type']).toContain("application/json")
+	});
+	it('check if track was added (no parameter validation)', async () => {
+		const res = await axios.get(base + '/api/tracks/' + added_track.id, axios_config);
+		expect(res.status).toEqual(200);
+		expect(res.headers['content-type']).toContain("application/json");
+	});
+});
\ No newline at end of file