diff --git a/services/frontend/src/pages/Competition/index.tsx b/services/frontend/src/pages/Competition/index.tsx
index 290e979..fe37509 100644
--- a/services/frontend/src/pages/Competition/index.tsx
+++ b/services/frontend/src/pages/Competition/index.tsx
@@ -2,40 +2,57 @@ import { useParams, Link, useNavigate } from "react-router-dom";
 import { Button } from "@/components/ui/button";
 import { ArrowLeft } from "lucide-react";
 import ReactMarkdown from "react-markdown";
-import { mockTasks } from "@/shared/mocks/mocks";
-import { useQuery } from "@tanstack/react-query";
-import { getCompetition } from "@/shared/api/competitions";
+import { useQuery, useMutation } from "@tanstack/react-query";
+import { getCompetition, startCompetition } from "@/shared/api/competitions";
+import { getCompetitionTasks } from "@/shared/api/session";
 import { Loading } from "@/components/ui/loading";
 
 const CompetitionPage = () => {
   const { id } = useParams<{ id: string }>();
   const navigate = useNavigate();
+  const competitionId = id || "";
 
-  const { data: competition, isLoading } = useQuery({
-    queryKey: ["competition", id],
-    queryFn: async () => getCompetition(id || ""),
+  const competitionQuery = useQuery({
+    queryKey: ["competition", competitionId],
+    queryFn: () => getCompetition(competitionId),
+    enabled: !!competitionId,
   });
 
-  if (isLoading) {
+  const startMutation = useMutation({
+    mutationFn: () => startCompetition(competitionId),
+    onSuccess: async () => {
+      try {
+        const tasks = await getCompetitionTasks(competitionId);
+        
+        if (tasks && tasks.length > 0) {
+          navigate(`/competition/${competitionId}/tasks/${tasks[0].id}`);
+        } else {
+          navigate(`/competition/${competitionId}/tasks`);
+        }
+      } catch (error) {
+        console.error("Failed to fetch tasks:", error);
+        navigate(`/competition/${competitionId}/tasks`);
+      }
+    },
+    onError: (error) => {
+      console.error("Failed to start competition:", error);
+    }
+  });
+
+  const handleStart = () => {
+    startMutation.mutate();
+  };
+
+  if (competitionQuery.isLoading) {
     return <Loading />;
   }
 
-  if (!id || !competition) {
+  if (!competitionId || !competitionQuery.data) {
     return <></>;
   }
 
-  const handleContinue = () => {
-    if (competition?.id) {
-      if (mockTasks && mockTasks.length > 0) {
-        const firstTaskId = mockTasks[0].id;
-        navigate(`/competition/${competition.id}/tasks/${firstTaskId}`);
-      } else {
-        navigate(`/competition/${competition.id}/tasks`);
-      }
-    }
-  };
+  const competition = competitionQuery.data;
 
-  console.log(competition)
   return (
     <div className="flex flex-col gap-4">
       <Link
@@ -47,13 +64,15 @@ const CompetitionPage = () => {
       </Link>
 
       <div className="flex flex-col gap-6">
-        <div className="aspect-2 h-auto w-full overflow-hidden rounded-xl">
-          <img
-            src={competition.image_url ? competition.image_url : '/DANO.png'}
-            alt={competition.title}
-            className="h-full w-full object-cover object-center"
-          />
-        </div>
+        {competition.image_url && (
+          <div className="aspect-2 h-auto w-full overflow-hidden rounded-xl">
+            <img
+              src={competition.image_url}
+              alt={competition.title}
+              className="h-full w-full object-cover object-center"
+            />
+          </div>
+        )}
 
         <div className="flex flex-col-reverse gap-8 md:flex-row">
           <div className="flex flex-1 flex-col gap-5">
@@ -65,8 +84,12 @@ const CompetitionPage = () => {
             </div>
           </div>
           <div className="w-full *:w-full md:w-96">
-            <Button size={"lg"} onClick={handleContinue}>
-              Приступить к выполнению
+            <Button 
+              size={"lg"} 
+              onClick={handleStart} 
+              disabled={startMutation.isPending}
+            >
+              {startMutation.isPending ? "Загрузка..." : "Начать"}
             </Button>
           </div>
         </div>
@@ -75,4 +98,4 @@ const CompetitionPage = () => {
   );
 };
 
-export default CompetitionPage;
+export default CompetitionPage;
\ No newline at end of file
diff --git a/services/frontend/src/shared/api/competitions.ts b/services/frontend/src/shared/api/competitions.ts
index 5a5eba0..8c47564 100644
--- a/services/frontend/src/shared/api/competitions.ts
+++ b/services/frontend/src/shared/api/competitions.ts
@@ -12,3 +12,9 @@ export const getCompetitions = async (participating?: boolean) => {
 export const getCompetition = async (id: string) => {
   return await userFetch<Competition>(`/competition/${id}`);
 };
+
+export const startCompetition = async (competitionId: string) => {
+  return await userFetch(`/competitions/${competitionId}/start`, {
+    method: 'POST'
+  });
+};
\ No newline at end of file
diff --git a/services/frontend/src/shared/api/session.ts b/services/frontend/src/shared/api/session.ts
index 564e91a..0cc6383 100644
--- a/services/frontend/src/shared/api/session.ts
+++ b/services/frontend/src/shared/api/session.ts
@@ -1,82 +1,29 @@
-import { apiFetch } from './index';
-import { Task, TaskStatus } from '@/shared/types';
+import { userFetch } from ".";
+import { Task } from "../types/task";
 
-interface ApiTask {
-  id: string;
-  title: string;
-  description: string;
-  type: 'input' | 'file' | 'code';
-  in_competition_position: number;
-  points: number;
-  status?: TaskStatus; 
-}
-
-/**
- * Fetches tasks for a specific competition
- * @param competitionId - The ID of the competition
- * @returns Promise with an array of tasks in the application's format
- */
-export const getCompetitionTasks = async (competitionId: string): Promise<Task[]> => {
-  try {
-    const apiTasks: ApiTask[] = await apiFetch(`/api/v1/competitions/${competitionId}/tasks`);
-    
-    // Transform API tasks to application Task format
-    return apiTasks.map(apiTask => transformApiTask(apiTask));
-  } catch (error) {
-    console.error('Failed to fetch competition tasks:', error);
-    throw error;
-  }
+export const getCompetitionTasks = async (competitionId: string) => {
+  return await userFetch<Task[]>(`/competitions/${competitionId}/tasks`);
 };
 
-/**
- * Transforms an API task to the application's Task format
- */
-const transformApiTask = (apiTask: ApiTask): Task => {
-  return {
-    id: apiTask.id,
-    number: String(apiTask.in_competition_position), 
-    status: apiTask.status || TaskStatus.Uncleared,
-    solutionType: apiTask.type, 
-    description: apiTask.description,
-    maxScore: apiTask.points
-  };
-};
-
-
-// export const submitTaskSolution = async (
-//   competitionId: string, 
-//   taskId: string, 
-//   solution: string | File
-// ): Promise<void> => {
-//   const endpoint = `/api/v1/competitions/${competitionId}/tasks/${taskId}/submit`;
+export const submitTaskSolution = async (
+  competitionId: string, 
+  taskId: string, 
+  solution: string | File
+) => {
+  const endpoint = `/competitions/${competitionId}/tasks/${taskId}/submit`;
   
-//   // Handle different solution types
-//   if (typeof solution === 'string') {
-//     // Text or code solution
-//     await apiFetch(endpoint, {
-//       method: 'POST',
-//       body: { answer: solution }
-//     });
-//   } else {
-//     // File solution
-//     const formData = new FormData();
-//     formData.append('file', solution);
+  if (typeof solution === 'string') {
+    return await userFetch(endpoint, {
+      method: 'POST',
+      body: { answer: solution }
+    });
+  } else {
+    const formData = new FormData();
+    formData.append('file', solution);
     
-//     await apiFetch(endpoint, {
-//       method: 'POST',
-//       body: formData
-//     });
-//   }
-// };
-
-/**
- * Gets the status of a task submission
- * This would be used to poll for updates after submission
- */
-// export const getTaskSubmissionStatus = async (
-//   competitionId: string,
-//   taskId: string
-// ): Promise<TaskStatus> => {
-//   const response = await apiFetch(`/api/v1/competitions/${competitionId}/tasks/${taskId}/status`);
-//   return response.status;
-// };
\ No newline at end of file
+    return await userFetch(endpoint, {
+      method: 'POST',
+      body: formData
+    });
+  }
+};
\ No newline at end of file