Best 5K Marathons Apps

241+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated September 2026

Out of 241+ 5k marathons apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top 5K Marathons Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Marathon 26.2 Trainer by C25K®Marathon 26.2 Trainer by C25K®Free4.7★ (1.7K)YesYesSep 2026
2Fox Cities MarathonFox Cities MarathonFree—NoNoSep 2026
3Let's Race: Run & TriathlonLet's Race: Run & TriathlonFree4.8★ (238)NoNoSep 2026
4Half Marathon 13.1 TrainerHalf Marathon 13.1 TrainerFree4.7★ (5.6K)YesYesSep 2026
5MOTTIV: Run & Triathlon PlansMOTTIV: Run & Triathlon PlansFree4.8★ (70)NoYesAug 2026
65k Run- Couch Potato to 5K5k Run- Couch Potato to 5KFree4.4★ (360)NoYesSep 2026
7NXT RUN: AI Running CoachNXT RUN: AI Running CoachFree4.5★ (36)YesYesSep 2026
85K Run - Train to 5K5K Run - Train to 5KFree4.9★ (1.4K)YesYesSep 2026

Top Picks for 5K Marathons

Marathon 26.2 Trainer by C25K®#1

Marathon 26.2 Trainer by C25K® by Zen Labs

42K Run Walk Training
Editor's Choice
💪 Health & Fitness
4.7😐(1.7K ratings)
FreeAdsIn-App Purchases
Marathon 26.2 Trainer by C25K® screenshot 1
Marathon 26.2 Trainer by C25K® screenshot 2
Marathon 26.2 Trainer by C25K® screenshot 3
Marathon 26.2 Trainer by C25K® screenshot 4
Marathon 26.2 Trainer by C25K® screenshot 5
Marathon 26.2 Trainer by C25K® screenshot 6

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.

What We Love

  • 🚀 Great progression & motivation
  • 👍 Easy and fun to use
  • 👍 Helpful for first-time marathoners
  • 👍 Keeps user accountable and motivated

Room to Improve

  • 🐛 Crashes, freezes, and malfunctions
  • 💰 Subscription model changes after initial purchase
  • 💰 Requires additional purchases for full functionality
  • 🔋 Drains battery when screen is locked
  • 👎 Run/walk intervals not suitable for all users

More 5K Marathons apps to explore

FAQ about 5K Marathons

What are the best 5k marathons apps for iPhone?
Marathon 26.2 Trainer by C25K® tops our 5k marathons apps ranking as of September 2026, with a 4.7-star average from 1.7K App Store ratings, and it's free to download.
Yes — 20 of the top 5k marathons apps we rank are free to download, including Marathon 26.2 Trainer by C25K® and Fox Cities Marathon.
Marathon 26.2 Trainer by C25K® shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 241+ 5k marathons apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Marathon 26.2 Trainer by C25K® is an official marathon training app designed for beginners. It provides a 20-week program that uses a blend of running and power walking to help users complete a full 26.2 (42k) marathon.
Key features include a proven 20-week run-walk training program (with a free first week), a convenient audio coach and alerts, the ability to map your run, light and dark modes, health app integration, and access to community forums with other runners.