5K
The #1 Beginner Running App

YOUR FIRST
5K STARTS NOW.

Over 5 million people went from zero to running with C25K. Free. It works. What's your excuse?

5M+ Active Runners 4.8★ App Store 8 Weeks To 5K Free to Start
Runners on the road

5 Million Reasons to Start

Real people. Real results. Real runs. Join the movement.

5M+
Active Runners
4.8★
App Store Rating
8 WKS
Zero to 5K
100%
Free to Start
Training Plans

Choose Your Distance

5K
C25K® Trainer
The world's most popular beginner running program. Walk-run intervals that ease you into 5K without injury.
8 Weeks
Free
10K
10K Trainer
Bridge the gap from your first 5K to the iconic 10K distance with structured interval training.
10 Weeks
Pro
½M
Half Marathon Trainer
Conquer 13.1 miles with a progressive plan designed to build endurance safely and sustainably.
12 Weeks
Pro
M
Marathon Trainer
The full 26.2. An 18-week peak performance plan for those ready to go the distance.
18 Weeks
Pro
Featured In
Runner's World Wired The Guardian Men's Health TechCrunch Forbes
Community

What Runners Are Saying

★★★★★
“
"I never believed I could run a 5K. Eight weeks later I crossed the finish line. C25K changed my life."
S
Sarah M.
Completed 5K — Week 8
★★★★★
“
"Down 40 lbs and ran my first half marathon. The app keeps you accountable without making you feel guilty."
J
James T.
Half Marathon finisher
★★★★★
“
"At 52, I thought running was behind me. C25K proved me completely wrong. Best app I've ever downloaded."
L
Linda K.
Age 52 — 5K finisher

READY
TO RUN?

Download C25K free today and join over 5 million people who went from the couch to their first finish line. No excuses. Just miles.