Part 1 of the relation fix

src/models/entities/Runner.ts

@@ -54,7 +54,7 @@ export class Runner extends Participant {
    * Returns the total distance ran by this runner.
   */
   @IsInt()
-  public async distance(): Promise<number> {
-    return await (await this.getValidScans()).reduce((sum, current) => sum + current.distance, 0);
+  public get distance(): number {
+    return 0;
   }
 }