---
title: "Half Marathon Trainer: 21K Run — App Overview"
url: https://marlvel.ai/apps/half-marathon-trainer-21k-run
category: Health & Fitness
developer: FITNESS22 LTD
platforms: ios
rating: 4.8 (1.7K ratings)
pricing: free
report_level: overview
generated: 2026-04-17
last_verified: "2026-04-17T10:58:49.232Z"
overall_rating: 4.8
total_reviews: 1668
data_age_days: 211
---

<!-- SECTION: Key Insight -->
> **Key Insight:** While the app offers a structured 12-week training plan, user feedback highlights potential technical limitations regarding workout logging and a lack of parity with the developer's other fitness apps.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Health & Fitness |
| Rating | 4.8 ★ (1.7K) |
| Pricing | free |
| Platforms | iOS |
| Latest Version (iOS) | 8.004 |
| Developer | FITNESS22 LTD |

<!-- SECTION: Summary -->
## What is Half Marathon Trainer: 21K Run?

Half Marathon Trainer: 21K Run is a fitness application designed to guide users from a 10K fitness level to completing a 21K half marathon. The app utilizes a structured 12-week training program, audio-guided runs, and motivational tools to assist users in their long-distance running goals.

<!-- SECTION: Key Features -->
## Key Features

- **12-Week Running Program**: A progressive training plan designed to gradually increase running distance to a full 21K.
- **Audio Guidance**: Provides real-time coaching and instructions through headphones while users listen to their own music.
- **Progress Tracking and Badges**: Logs completed runs and awards digital badges to maintain user motivation.
- **Social Sharing**: Allows users to share their training progress and achievements via Facebook, Twitter, or email.
- **Motivational Content**: Integrates motivational quotes throughout the interface to encourage consistency in training.

<!-- SECTION: Target Audience -->
## Who is it for?

Beginner to intermediate runners looking for a structured, guided program to transition from 10K to 21K distances.

<!-- SECTION: Links -->
## Links

- App Store (App Store ID 521810715)
- [Full Intelligence Report](https://marlvel.ai/apps/half-marathon-trainer-21k-run)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/half-marathon-trainer-21k-run).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*