diff --git a/src/controllers/PdfController.ts b/src/controllers/PdfController.ts
index f3a1009..74659f3 100644
--- a/src/controllers/PdfController.ts
+++ b/src/controllers/PdfController.ts
@@ -18,7 +18,7 @@ export class PdfController {
 
     @Post('/contracts')
     @OpenAPI({ description: "Generate Sponsoring contract pdfs from runner objects.<br>You can choose your prefered locale by passing the 'locale' query-param.<br> If you provide more than 100 runenrs this could take a moment or two (we tested up to 1000 runners in about 70sec so far)." })
-    async generateContracts(@Body({ validate: true, options: { limit: "500mb" } }) runners: Runner | Runner[], @Res() res: any, @QueryParam("locale") locale: string, @QueryParam("codeformat") codeformat: string) {
+    async generateContracts(@Body({ validate: true, options: { limit: "500mb" } }) runners: Runner[], @Res() res: any, @QueryParam("locale") locale: string, @QueryParam("codeformat") codeformat: string) {
         if (!this.initialized) {
             await this.pdf.init();
             this.initialized = true;
@@ -26,6 +26,7 @@ export class PdfController {
         if (!Array.isArray(runners)) {
             runners = [runners];
         }
+        runners = this.mapRunnerGroupNames(runners)
         const contracts = await this.pdf.generateSponsoringContract(runners, locale, codeformat);
         res.setHeader('content-type', 'application/pdf');
         return contracts;
@@ -41,8 +42,37 @@ export class PdfController {
         if (!Array.isArray(cards)) {
             cards = [cards];
         }
+        cards = this.mapCardGroupNames(cards);
         const contracts = await this.pdf.generateRunnerCards(cards, locale);
         res.setHeader('content-type', 'application/pdf');
         return contracts;
     }
+
+    private mapRunnerGroupNames(runners: Runner[]): Runner[] {
+        let response = new Array<Runner>();
+        for (let runner of runners) {
+            if (!runner.group.parentGroup) {
+                runner.group.fullName = runner.group.name;
+            }
+            else {
+                runner.group.fullName = `${runner.group.parentGroup.name}/${runner.group.name}`;
+            }
+            response.push(runner)
+        }
+        return response;
+    }
+
+    private mapCardGroupNames(cards: RunnerCard[]): RunnerCard[] {
+        let response = new Array<RunnerCard>();
+        for (let card of cards) {
+            if (!card.runner.group.parentGroup) {
+                card.runner.group.fullName = card.runner.group.name;
+            }
+            else {
+                card.runner.group.fullName = `${card.runner.group.parentGroup.name}/${card.runner.group.name}`;
+            }
+            response.push(card)
+        }
+        return response;
+    }
 }
diff --git a/src/models/Runner.ts b/src/models/Runner.ts
index e1c0efb..60a1c8b 100644
--- a/src/models/Runner.ts
+++ b/src/models/Runner.ts
@@ -13,7 +13,8 @@ import {
 
     IsPositive,
 
-    IsString
+    IsString,
+    ValidateNested
 } from "class-validator";
 import { RunnerGroup } from './RunnerGroup';
 
@@ -53,6 +54,7 @@ export class Runner {
      * The runner's group.
      */
     @IsObject()
+    @ValidateNested()
     group: RunnerGroup;
 
     /**
@@ -60,4 +62,8 @@ export class Runner {
      */
     @IsInt()
     distance: number;
+
+    constructor() {
+        console.log("called")
+    }
 }
diff --git a/src/models/RunnerGroup.ts b/src/models/RunnerGroup.ts
index 0b9b109..cd560f9 100644
--- a/src/models/RunnerGroup.ts
+++ b/src/models/RunnerGroup.ts
@@ -25,4 +25,6 @@ export class RunnerGroup {
     @IsObject()
     @IsOptional()
     parentGroup?: RunnerGroup;
+
+    fullName: string;
 }
diff --git a/src/templates/runner_card.html b/src/templates/runner_card.html
index c85218e..76d1760 100644
--- a/src/templates/runner_card.html
+++ b/src/templates/runner_card.html
@@ -48,7 +48,7 @@
           </div>
         </div>
         <p>{{this.runner.lastname}}, {{this.runner.firstname}} {{this.runner.middlename}}</p>
-        <p>{{this.runner.group.name}}</p>
+        <p>{{this.runner.group.fullName}}</p>
       </div>
       {{/each}}
     </div>
diff --git a/src/templates/sponsoring_contract.html b/src/templates/sponsoring_contract.html
index b75d7f2..ddcad0a 100644
--- a/src/templates/sponsoring_contract.html
+++ b/src/templates/sponsoring_contract.html
@@ -64,7 +64,7 @@
           <p style="font-size: x-small; display: block;">{{__ "lastname"}}</p>
         </div>
         <div class="column is-6">
-          <span style="border-bottom: 1px solid; width: 100%; display: block;">{{this.group.name}}</span>
+          <span style="border-bottom: 1px solid; width: 100%; display: block;">{{this.group.fullName}}</span>
           <p style="font-size: x-small; display: block;">{{__ "group"}}</p>
         </div>
       </div>