Best 21K Half Marathon Run Coach Apps

191+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated July 2026

Whether you're new to 21k half marathon run coach or looking for an upgrade, our curated collection of 191+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top 21K Half Marathon Run Coach Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Half Marathon Trainer: 21K RunHalf Marathon Trainer: 21K RunFree4.8★ (1.6K)NoYesJul 2026
210K Runner, Couch to 10K Run10K Runner, Couch to 10K RunFree4.9★ (38K)NoYesJul 2026
3Runna: Running Plans & CoachRunna: Running Plans & CoachFree4.9★ (32K)YesYesJul 2026
4Half Marathon 13.1 TrainerHalf Marathon 13.1 TrainerFree4.7★ (5.6K)YesYesJul 2026
5Nike Run Club: Running CoachNike Run Club: Running CoachFree4.8★ (416K)YesNoJul 2026
621K Half Marathon Run Coach21K Half Marathon Run CoachFree5.0★ (3)YesYesMay 2026
7Diverto - Programme TV & ActuDiverto - Programme TV & ActuFreeYesNoMay 2026
8Half Marathon- 21K Run AppHalf Marathon- 21K Run AppFree4.2★ (254)NoYesMay 2026

Top Picks for 21K Half Marathon Run Coach

Half Marathon Trainer: 21K Run#1

Half Marathon Trainer: 21K Run by FITNESS22 LTD

Half marathon training 13.1 mi
Editor's Choice
💪 Health & Fitness
4.8😐(1.6K ratings)
FreeIn-App Purchases
Half Marathon Trainer: 21K Run screenshot 1
Half Marathon Trainer: 21K Run screenshot 2
Half Marathon Trainer: 21K Run screenshot 3
Half Marathon Trainer: 21K Run screenshot 4
Half Marathon Trainer: 21K Run screenshot 5

This app provides a structured 12-week training program designed to help users progress from a 10K fitness level to completing a half marathon (21K). It features an audio coach for guidance, motivational elements, and progress tracking with achievements.

What We Love

  • 🚀 Easy to follow training plan
  • 👍 Effective for building up to half marathon
  • 👍 Variety of workouts (running, intervals, strength)
  • 👍 Motivating and keeps user on track

Room to Improve

  • 🐛 Inconsistent audio prompts and notifications
  • 🐛 Frequent issues with saving/tracking runs
  • 🐛 Glitches and crashes
10K Runner, Couch to 10K Run#2

10K Runner, Couch to 10K Run by FITNESS22 LTD

10K Trainer: 0 to 5K to 10K
Strong Contender
💪 Health & Fitness
4.9😊(38K ratings)
FreeIn-App Purchases
10K Runner, Couch to 10K Run screenshot 1
10K Runner, Couch to 10K Run screenshot 2
10K Runner, Couch to 10K Run screenshot 3
10K Runner, Couch to 10K Run screenshot 4
10K Runner, Couch to 10K Run screenshot 5
10K Runner, Couch to 10K Run screenshot 6

This app guides beginners and 5K runners from zero to 10K in 14 weeks using alternating walk/run intervals. It features a human coach voice, music integration, and GPS tracking. Achieve your running goals with this effective, ad-free program.

What We Love

  • 🚀 Gradual progression
  • 👍 Motivating and encouraging
  • 🚀 Helps build stamina and endurance
  • 👍 Flexible and customizable

Room to Improve

  • 🐛 Inaccurate GPS tracking and pace calculation
  • 🐛 Glitches and app crashes
  • 🐛 Lack of integration with Apple Watch
Runna: Running Plans & Coach#3

Runna: Running Plans & Coach by Strava Inc.

5k to Marathon Training
Worth Considering
💪 Health & Fitness
4.9😊(32K ratings)
FreeAdsIn-App Purchases
#12in Health & Fitness
Runna: Running Plans & Coach screenshot 1
Runna: Running Plans & Coach screenshot 2
Runna: Running Plans & Coach screenshot 3
Runna: Running Plans & Coach screenshot 4
Runna: Running Plans & Coach screenshot 5
Runna: Running Plans & Coach screenshot 6

This app provides tailored running training plans designed by world-class coaches for all levels, from beginners to marathoners. It offers personalized programs, run tracking, strength training, and a supportive community.

What We Love

  • 🚀 Excellent training plans
  • 👍 Personalized and customizable
  • 👍 Variety of workouts
  • 👍 Seamless integration with fitness trackers

Room to Improve

  • 🐛 Occasional syncing issues with Apple Watch
  • 🐛 Inaccurate pace tracking on treadmill
  • 🔋 Expensive subscription cost

More 21K Half Marathon Run Coach apps to explore

4
Half Marathon 13.1 Trainer
Half Marathon 13.1 Trainer
Half Marathon 13.1 Trainer
21K Run Walk Training by C25K®
Free

This app guides beginners through a 14-week program to train for a half marathon using a run-walk method. It offers audio coaching, progress tracking, and community support to help users complete their first 13.1-mile race.

14-week run-walk training programAudio coach and alertsRun mapping
💪 Health & Fitness
(5.6K)
free with in-app purchases
5
Nike Run Club: Running Coach
Nike Run Club: Running Coach
Nike Run Club: Running Coach
Workout App & Distance Tracker
Free

This app offers guided runs, training plans, and community challenges to help users start, continue, and enjoy running. It tracks speed, distance, and GPS routes, providing motivation and expert guidance for various fitness levels and goals.

Guided Runs with audio coachingPersonalized Training PlansGPS tracking for speed, distance, and route
💪 Health & Fitness
(416K)
free with in-app purchases
6
21K Half Marathon Run Coach
21K Half Marathon Run Coach
21K Half Marathon Run Coach
#1 Marathon Trainer & Tracker
Free

This app provides a personalized training plan to help you achieve your half marathon goals. It tracks your runs, offers diet plans, and motivates you with progress tracking and social sharing features. Suitable for all fitness levels, it guides you from beginner to finisher.

Customized running plansGPS distance and speed trackingStep-by-step voice guidance
💪 Health & Fitness
(3)
free with in-app purchases
7
Diverto - Programme TV & Actu
Diverto - Programme TV & Actu
Diverto - Programme TV & Actu
by Diverto
Free
🎬 Entertainment
(0)
8
Half Marathon- 21K Run App
Half Marathon- 21K Run App
Half Marathon- 21K Run App
Couch to half marathon- 21K
Free

Train for your first 21K run with a comprehensive 12-week program. This app offers audio coaching, interval planning, and motivational tips to build strength and endurance. Track your progress, earn badges, and share achievements with friends.

12-week running programAudio coach guidanceRun/walk strategy
💪 Health & Fitness
(254)
free with in-app purchases
9
Map My Run GPS Running Tracker
Map My Run GPS Running Tracker
Map My Run GPS Running Tracker
5K 10K, Half Marathon Training
Free

Track your runs with GPS, get personalized training plans, and real-time stats. This app offers coaching tips, community motivation, and supports over 600 activities. Improve your performance indoors or outdoors.

GPS tracking for distance, pace, and elevationCustomizable training plans for various distancesReal-time audio feedback during runs
💪 Health & Fitness
(746K)
free with in-app purchases
10
adesa+
adesa+
adesa+
GPL • PMXtra • Live TV • More
Free

Stream live Ghanaian entertainment, including the Ghana Premier League, original series, and on-demand movies. Enjoy live TV channels and reality shows with a subscription.

Ghana Premier League streamingPerfect Match Xtra liveOriginal Ghanaian series
🎬 Entertainment
(6)
free
11
Marathon 26.2 Trainer by C25K®
Marathon 26.2 Trainer by C25K®
Marathon 26.2 Trainer by C25K®
42K Run Walk Training
Free

This app offers a 20-week training program designed for beginners aiming to complete a marathon. It utilizes a run-walk method to reduce impact and injury risk, guided by an audio coach. Features include run mapping, health app integration, and community forums.

20-week run-walk marathon training programAudio coach and alertsMap your run
💪 Health & Fitness
(1.7K)
free with in-app purchases
12
Run With Hal
Run With Hal
Run With Hal
Coach-Led Run Plans
Free

This app provides personalized, adaptive training plans for various running distances, from 5K to 50K. It's guided by legendary coach Hal Higdon and adjusts to your progress, schedule, and goals. Features include GPS tracking, daily tips, and progress summaries to help you achieve your running ambitions.

Adaptive training plansPlans for 5K to 50K racesDaily motivation from Hal Higdon
💪 Health & Fitness
(2.8K)
free with in-app purchases
13
adidas Running: Run tracker
adidas Running: Run tracker
adidas Running: Run tracker
From Walk to Marathon training
Free

Track your runs and fitness activities with personalized training plans for all levels. Connect with a global community, join challenges, and monitor your progress with detailed stats and expert guidance.

Activity tracking for running, walking, cycling, and morePersonalized training plans for various distancesSyncs with Health Connect and popular devices
💪 Health & Fitness
(18K)
ad-supported
14
ALPA Mobile
ALPA Mobile
ALPA Mobile
Air Line Pilots Association
Free

This app provides ALPA members with a Flight Finder to check jumpseat availability on commercial and cargo carriers. It also offers access to important ALPA documents, resources, and contact information for representatives.

Flight Finder for jumpseat availabilityAirline-specific jumpseat informationAirport KCM locations
📡 News
(31)
free
15
Run Half Marathon
Run Half Marathon
Run Half Marathon
5K, 10K & Marathon Runner Plan
Free

This app provides a structured 18-week training plan to help beginners run a half marathon. It guides users through alternating walking and running intervals, tracks progress with GPS, and offers motivational features. Users can log and share their runs, and receive audio cues for when to run or walk.

18-week zero to half marathon training scheduleAlternating walk/run intervals with audio cuesGPS tracking for running routes
💪 Health & Fitness
(117)
free with in-app purchases
16
Coopah: The Run Coaching App
Coopah: The Run Coaching App
Coopah: The Run Coaching App
5K, 10K, Half & Marathon Coach
Free

This app provides personalized running coaching with adaptive plans that adjust to your fitness and life. It offers daily direction, race readiness scores, and 24/7 expert support to help you achieve your running goals and prevent injuries.

Adaptive coaching plansRace Day Confidence Score24/7 Expert Coaching (AI & human)
💪 Health & Fitness
(90)
free with in-app purchases
17
C25K® 5K Running Coach & Map
C25K® 5K Running Coach & Map
C25K® 5K Running Coach & Map
Run Training - Couch to Runner
Free

This app guides beginners from being inactive to running a 5K in 8 weeks. It uses a structured plan with audio coaching and alerts, gradually increasing running intervals. Users can map their runs and join a supportive community.

Official Couch to 5K program8-week training planAudio coach and alerts
💪 Health & Fitness
(170K)
free with in-app purchases
18
Joggo - Run Tracker & Coach
Joggo - Run Tracker & Coach
Joggo - Run Tracker & Coach
Weight loss running plans
Free

This app provides personalized running programs and meal plans to help users achieve their fitness and weight loss goals. It offers features like treadmill training, progress-based plan adjustments, educational content, and motivational rewards. Track your runs, monitor progress, and stay motivated with this all-in-one fitness companion.

Personalized running programsCustom meal plansTreadmill training mode
💪 Health & Fitness
(5.3K)
free with in-app purchases
19
5K Runner: couch potato to 5K
5K Runner: couch potato to 5K
5K Runner: couch potato to 5K
Couch potato to 5K: Run 5K
Free

This app guides users from being inactive to running a 5K in 8 weeks with a structured, 30-minute daily program. It features a human coach voice, music integration, and GPS tracking to help you achieve your fitness goals.

8-week structured training planAlternating walk/run intervalsHuman coach voice guidance
💪 Health & Fitness
(117K)
subscription
20
Running Trainer: Tracker&Coach
Running Trainer: Tracker&Coach
Running Trainer: Tracker&Coach
Run Coach: 5K & 10K Runner
Free

This app provides accurate running tracking, including pace, distance, calories, and heart rate. It offers voice feedback, music integration, and a history of your running activities to help you improve.

Accurate distance and time trackingPace and calorie trackingGPS mapping and route tracking
💪 Health & Fitness
(112K)
subscription

FAQ about 21K Half Marathon Run Coach

What are the best 21k half marathon run coach apps for iPhone?
Half Marathon Trainer: 21K Run tops our 21k half marathon run coach apps ranking as of July 2026, with a 4.8-star average from 1.6K App Store ratings, and it's free to download.
Yes — 20 of the top 21k half marathon run coach apps we rank are free to download, including Half Marathon Trainer: 21K Run and 10K Runner, Couch to 10K Run.
Half Marathon Trainer: 21K Run has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 191+ 21k half marathon run coach apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
The app is designed to be a comprehensive training program for individuals aiming to run a half marathon (21K). It guides users through a 12-week plan that gradually increases running distance and intensity, starting from a 10K fitness level.
The audio coach provides real-time guidance during your runs, telling you when to walk and when to run. It can be set to voice, beeps, or both, and it gently blends in with your music to keep you informed without disruption.