Eiko : Running Trail Triathlon
Share your race calendar.
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Free
About
What are your friends' next races?
Eiko lets you see what your friends are planning, even before they officially sign up.
Running, triathlon, trail, gravel, swimrun, Hyrox, duathlon, or group outings: everything is in one place!
The best way to find inspiration and stay motivated. No more saying, "I would’ve signed up if I’d known!"
A truly social sports calendar
- Access your friends' combined calendar alongside your own.
- Discover upcoming events, their intentions, and their motivation levels.
- Get inspired to choose your next race.
“If you’re in, I’m in”
- Add or create an event in seconds.
- Indicate your probability of joining (from 1% to 100%).
- See who might join you… or motivate others to come along.
Download Eiko and turn your solo projects into collective adventures.
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What's New in Eiko
2.0.0
December 22, 2025
Eiko is evolving - Custom events: Add any type of activity (trail, gravel, swimrun, Hyrox, group outings, and more). - New Home screen: A merged calendar featuring all your friends' upcoming events. - Simplified experience: Adding and joining events is now easier than ever. - Probability tracking: Manage your intent to participate with a percentage scale. The best way to find inspiration and stay motivated. No more saying, "I would’ve signed up if I’d known!"
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