diff --git a/src/controllers/RunnerController.ts b/src/controllers/RunnerController.ts
index bbdf333..a8bf93f 100644
--- a/src/controllers/RunnerController.ts
+++ b/src/controllers/RunnerController.ts
@@ -1,10 +1,10 @@
 import { Body, Delete, Get, JsonController, OnUndefined, Param, Post, Put, QueryParam } from 'routing-controllers';
 import { OpenAPI, ResponseSchema } from 'routing-controllers-openapi';
 import { getConnectionManager, Repository } from 'typeorm';
-import { EntityFromBody } from 'typeorm-routing-controllers-extensions';
 import { RunnerGroupNeededError, RunnerIdsNotMatchingError, RunnerNotFoundError } from '../errors/RunnerErrors';
 import { RunnerGroupNotFoundError } from '../errors/RunnerGroupErrors';
 import { CreateRunner } from '../models/actions/CreateRunner';
+import { UpdateRunner } from '../models/actions/UpdateRunner';
 import { Runner } from '../models/entities/Runner';
 import { ResponseEmpty } from '../models/responses/ResponseEmpty';
 import { ResponseRunner } from '../models/responses/ResponseRunner';
@@ -66,8 +66,8 @@ export class RunnerController {
 	@ResponseSchema(RunnerNotFoundError, { statusCode: 404 })
 	@ResponseSchema(RunnerIdsNotMatchingError, { statusCode: 406 })
 	@OpenAPI({ description: "Update a runner object (id can't be changed)." })
-	async put(@Param('id') id: number, @EntityFromBody() runner: Runner) {
-		let oldRunner = await this.runnerRepository.findOne({ id: id }, { relations: ['scans', 'group'] });
+	async put(@Param('id') id: number, @Body({ validate: true }) runner: UpdateRunner) {
+		let oldRunner = await this.runnerRepository.findOne({ id: id }, { relations: ['group'] });
 
 		if (!oldRunner) {
 			throw new RunnerNotFoundError();
@@ -77,8 +77,8 @@ export class RunnerController {
 			throw new RunnerIdsNotMatchingError();
 		}
 
-		await this.runnerRepository.update(oldRunner, runner);
-		return new ResponseRunner(runner);
+		await this.runnerRepository.update(oldRunner, await runner.toRunner());
+		return new ResponseRunner(await this.runnerRepository.findOne({ id: id }, { relations: ['scans', 'group'] }));
 	}
 
 	@Delete('/:id')
diff --git a/src/models/actions/CreateParticipant.ts b/src/models/actions/CreateParticipant.ts
index 2a67e3c..b3827d1 100644
--- a/src/models/actions/CreateParticipant.ts
+++ b/src/models/actions/CreateParticipant.ts
@@ -47,7 +47,7 @@ export abstract class CreateParticipant {
 
     /**
      * The new participant's address.
-     * Must be of type number (address id), createAddress (new address) or address (existing address)
+     * Must be of type number (address id).
      * Optional.
      */
     @IsInt()
diff --git a/src/models/actions/CreateRunner.ts b/src/models/actions/CreateRunner.ts
index f3611ce..2b9f128 100644
--- a/src/models/actions/CreateRunner.ts
+++ b/src/models/actions/CreateRunner.ts
@@ -10,8 +10,7 @@ import { CreateParticipant } from './CreateParticipant';
 export class CreateRunner extends CreateParticipant {
 
     /**
-     * The new runner's team's id.
-     * Either provide this or his organisation's id.
+     * The new runner's group's id.
      */
     @IsInt()
     group: number;
diff --git a/src/models/actions/CreateRunnerGroup.ts b/src/models/actions/CreateRunnerGroup.ts
index 76552ac..288baeb 100644
--- a/src/models/actions/CreateRunnerGroup.ts
+++ b/src/models/actions/CreateRunnerGroup.ts
@@ -20,16 +20,16 @@ export abstract class CreateRunnerGroup {
     contact?: number;
 
     /**
-     * Deals with the contact for groups this.
+     * Get's this group's contact from this.address.
      */
     public async getContact(): Promise<GroupContact> {
         if (this.contact === undefined) {
             return null;
         }
         if (!isNaN(this.contact)) {
-            let address = await getConnectionManager().get().getRepository(GroupContact).findOne({ id: this.contact });
-            if (!address) { throw new GroupContactNotFoundError; }
-            return address;
+            let contact = await getConnectionManager().get().getRepository(GroupContact).findOne({ id: this.contact });
+            if (!contact) { throw new GroupContactNotFoundError; }
+            return contact;
         }
 
         throw new GroupContactWrongTypeError;
diff --git a/src/models/actions/CreateRunnerOrganisation.ts b/src/models/actions/CreateRunnerOrganisation.ts
index 01c3732..46fc72e 100644
--- a/src/models/actions/CreateRunnerOrganisation.ts
+++ b/src/models/actions/CreateRunnerOrganisation.ts
@@ -8,7 +8,7 @@ import { CreateRunnerGroup } from './CreateRunnerGroup';
 export class CreateRunnerOrganisation extends CreateRunnerGroup {
     /**
      * The new organisation's address.
-     * Must be of type number (address id), createAddress (new address) or address (existing address)
+     * Must be of type number (address id).
      * Optional.
      */
     @IsInt()
@@ -16,7 +16,7 @@ export class CreateRunnerOrganisation extends CreateRunnerGroup {
     address?: number;
 
     /**
-     * Creates a Participant entity from this.
+     * Get's this org's address from this.address.
      */
     public async getAddress(): Promise<Address> {
         if (this.address === undefined) {
diff --git a/src/models/actions/CreateTrack.ts b/src/models/actions/CreateTrack.ts
index 42bf384..9994094 100644
--- a/src/models/actions/CreateTrack.ts
+++ b/src/models/actions/CreateTrack.ts
@@ -10,7 +10,7 @@ export class CreateTrack {
     name: string;
 
     /**
-     * The track's distance in meters (must be greater 0).
+     * The track's distance in meters (must be greater than 0).
      */
     @IsInt()
     @IsPositive()
diff --git a/src/models/actions/UpdateRunner.ts b/src/models/actions/UpdateRunner.ts
new file mode 100644
index 0000000..5ade74f
--- /dev/null
+++ b/src/models/actions/UpdateRunner.ts
@@ -0,0 +1,57 @@
+import { IsInt, IsObject } from 'class-validator';
+import { getConnectionManager } from 'typeorm';
+import { RunnerGroupNotFoundError } from '../../errors/RunnerGroupErrors';
+import { RunnerOrganisationWrongTypeError } from '../../errors/RunnerOrganisationErrors';
+import { RunnerTeamNeedsParentError } from '../../errors/RunnerTeamErrors';
+import { Runner } from '../entities/Runner';
+import { RunnerGroup } from '../entities/RunnerGroup';
+import { CreateParticipant } from './CreateParticipant';
+
+export class UpdateRunner extends CreateParticipant {
+
+    /**
+     * The updated runner's id.
+     */
+    @IsInt()
+    id: number;
+
+    /**
+     * The updated runner's new team/org.
+     */
+    @IsObject()
+    group: RunnerGroup;
+
+    /**
+     * Creates a Runner entity from this.
+     */
+    public async toRunner(): Promise<Runner> {
+        let newRunner: Runner = new Runner();
+
+        newRunner.id = this.id;
+        newRunner.firstname = this.firstname;
+        newRunner.middlename = this.middlename;
+        newRunner.lastname = this.lastname;
+        newRunner.phone = this.phone;
+        newRunner.email = this.email;
+        newRunner.group = await this.getGroup();
+        newRunner.address = await this.getAddress();
+
+        return newRunner;
+    }
+
+    /**
+     * Manages all the different ways a group can be provided.
+     */
+    public async getGroup(): Promise<RunnerGroup> {
+        if (this.group === undefined) {
+            throw new RunnerTeamNeedsParentError();
+        }
+        if (!isNaN(this.group.id)) {
+            let group = await getConnectionManager().get().getRepository(RunnerGroup).findOne({ id: this.group.id });
+            if (!group) { throw new RunnerGroupNotFoundError; }
+            return group;
+        }
+
+        throw new RunnerOrganisationWrongTypeError;
+    }
+}
\ No newline at end of file