Marathon training made easy!
I’m training for a race and it has been so helpful to use the app to keep track of my plan and pre-race checklist.
Free
In-App Purchases
About
This app helps marathon runners organize all race-day details, from countdowns and checklists to pacing, fueling, and post-race notes. It integrates with fitness trackers to provide readiness scores and race predictions. Premium features unlock advanced analytics and unlimited race planning.
✓Race day countdown and logistics
✓Training data integration (Strava, Garmin, Apple Health)
✓Readiness score and race predictions
✓Mile-by-mile pace and fueling plans
✓Reusable checklists for gear and nutrition
✓Home and lock screen race day widgets
✓Post-race performance analysis
Show original description
+1
What's New in MarathonOS
1.3
November 4, 2026
Every screen in MarathonOS has been redesigned for an elegant and sleeker experience. Live Activities on race day morning are much more useful with: - Reminders for anything you want - Detailed race splits - Gel intake times And we now have support for iPhone Duo! The entire app has been reimagined to make the most of this device.
More2
Subscriptions & In-App Purchases
Premium Monthly
All premium features, billed monthly.
$6.991 Month
7 Days trialEvents
User reviews
Developer apps
FAQ
What is MarathonOS?
MarathonOS is a mobile application designed to help marathon runners organize all aspects of their race day. It provides features for countdowns, logistics, pacing, fueling, and post-race analysis.
How does MarathonOS help with training?
MarathonOS imports run data from Strava, Garmin, or Apple Health to provide a readiness score, training-load trends, and race predictions. This helps runners understand their current fitness level and potential race performance.
Can I plan my race pace and fueling with MarathonOS?
Yes, MarathonOS allows you to build a mile-by-mile pace band based on your goal time and strategy. It also includes a fueling timeline to schedule your nutrition during the race.
What are the premium features of MarathonOS?
Premium features include fueling plans, pace bands, goal analysis, advanced readiness analytics, and unlimited checklists, logistics, and race reports for all your races. These are available through monthly or annual subscriptions.
Does MarathonOS have ads?
No, MarathonOS does not contain advertisements. The app offers a free tier for your first race and premium features through subscription plans.
What devices does MarathonOS support?
MarathonOS is currently supported on iPhone devices and adapts to all screen sizes for a beautiful viewing experience.
How often is MarathonOS updated?
The latest version of MarathonOS is 1.3, and it was last updated on November 4, 2026. Updates typically bring new features and improvements to the application.
What is the age rating for MarathonOS?
MarathonOS has an age rating of 4+, making it suitable for a wide range of users.
