C25K
C25K: A structured first-5K plan with audio cues, but Apple Watch workouts start on the phone. Ranked #19 of 33 in Running Apps for Apple Watch by our editors (6.5/10); pricing: Free plan · 7-day trial; best for beginners training toward their first 5K.
At a glance
- Editor score6.5 / 10
- PricingFree plan · 7-day trial
- Best forBeginners training toward their first 5K
- Free planYes
- GPS run trackingYes
- Facts checked5 Oct 2026
Where it wins
- Eight-week plan schedules three workouts per week
- Audio cues guide walking and running intervals
- Pro adds Apple Watch controls and Apple Health integration
Where it doesn't
- Apple Watch is not supported for standalone workouts
- Apple Watch integration is limited to Pro
- The plan focuses on a first 5K rather than broader training
Our verdict on C25K
C25K guides beginners through an eight-week walk-and-run program aimed at completing a first 5K. Its schedule sets out three workouts per week, with audio cues telling runners when to walk and run. The app is available on iOS and Android, and includes route mapping after a workout. Its focus is deliberately narrow: it suits someone who wants a staged introduction to running, rather than a broad training platform for multiple race distances or goals.
Apple Watch support is a Pro feature, alongside controls to pause and resume workouts from the watch and integration with Apple Health. The watch works as an extension of the phone app: workouts need to be started on the phone, so C25K is not a fit for runners who want to leave their phone behind and track a workout from the watch alone. That phone-first requirement is the key ecosystem trade-off for Apple Watch users considering the app.
C25K has a free plan and a seven-day free trial. The listed starting price is 4.99, with regional in-app purchase amounts potentially varying. The Pro tier adds Apple Watch integration, while the core appeal remains the guided beginner plan and its interval cues. That makes C25K a reasonable match for solo users who want a simple first-5K schedule and are comfortable training with a phone. Runners seeking watch-only tracking, more varied training plans, or a wider set of advanced running tools should look elsewhere.
C25K pricing
C25K fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| GPS run tracking | Yes |
| Guided workouts | Yes |
| Training plans | Yes |
| Offline run support | Not verified |
| Phone-free tracking | No |
| Other platforms | iOS, Android |
| Free trial | 7 days |
| Deployment | Mobile |
| Platforms | iOS, Android |
| Support | Email, Community, Docs |
| Built for | Solo (editorial estimate) |
| Integrations | 2 integrations: Apple Health, Apple Watch |
| Pricing | Free plan · 7-day trial |
| Website | zenlabsfitness.com |
| Facts checked | 5 Oct 2026 |
C25K integrations
C25K lists 2 integrations on its own site.
- Apple Health
- Apple Watch
Alternatives to C25K
- StravaGPS tracking and route tools meet training analysis and community features.9.3
- Apple WorkoutA free Apple Watch running app with detailed metrics and customizable workouts.9.1
- Nike Run ClubA free running app with Apple Watch support, coaching audio and goal-based plans.9.0
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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