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Endurance Event Data Lives Here

OpenSplitTime is a free resource built by endurance athletes for the ultra community. OpenSplitTime makes it easy to collect, store, and play with endurance event data.
Join the community now.


Hardrock 2017 Full Results
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Plan Your Efforts

Runners, pacers, families, and crews can use OpenSplitTime to plan for ultras. Just estimate your finish time and OpenSplitTime will tell you where you need to be and when.
Hours of research converted to a few seconds? Yes please.


2017 Hardrock 2017 Double Dirty 30 2017 Never Summer 100K

Search the Archives

Browse and play with endurance event data like you've never done before. Analyze your efforts, discover your best segments, and find your peers. Much more is yet to come as the community gathers its data here.
For starters we've loaded 22 years of Hardrock, because...Hardrock.


Find Someone Search Hardrock Archives
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Open to Race Directors

We love to compete, but many of us don't love to organize. And the tools for tracking and organizing endurance events have been sorely lacking.
All that has now changed.


Import Event Data


(beta)

Unprecedented Live Tracking Tools

OST Live is revolutionary. It learns from your time data. It gives you race progress for each aid station. It tells you instantly where your runners last reported, where they are due next, and who you ought to look for.
Omniscience is pretty cool.

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Endurance events change people.

They create hard challenges in a soft world. They bring us together when our natural inclination might be to wander alone. They help us feel the simple joys of food, warmth, and rest by exposing us to cold, hunger and discomfort. They help us realize how much more is buried within when we seem empty and dry.

Go git 'er done.

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OpenSplitTime.org