A free place for trail and ultra runners to find friends training for the same race. Claim a handle, pin your race, follow people, and talk on the feed.

Yes. Free beta. Claim a handle and invite a friend.

Trail and ultrarunners with a race on the calendar. First 50. First hundred. Western States. Hardrock. Your local loop. If you want company around race day, you are in.

How is this different from Strava?

Strava is for your miles. pr.run is for friends in your race: who entered, what they pack, where they rehearse, and a tip when you need one.

Hit Join free, claim a handle, pin the race you entered, and follow a friend.

Your race, kit notes, routes, and pics on a public profile. The feed is for tips and thumbs, not a replay of every mile.

Do you connect to Strava?

Yes, when you want it. You approve the connect. The long run still lives on Strava.

Is this a training plan app?

No. Bring your own plan, coach, or gut. pr.run is where your people show up for the race on the calendar.

Which races are listed?

Flagship 50s, 100s, and 200s we could verify, plus hundreds more. Missing yours? Tell us and we add it.

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Incline calculator

The grade tax.

Your pace on a slope, translated to flat-ground effort and energy cost.

Grade

Percent slope

Rise over run × 100. From GPX or course profile.

Hike

15%+ uphill

Power hiking often beats running on steep grades.

Run the numbers

Course

Gradient (%)

Actual pace (mm:ss/km)

Flat-equivalent effort

5:49/km

Energy cost

2.06×

Power hike zone

Yes

Pick a race to get course-specific next steps.

Loading calculator…

Course

Gradient (%)

Actual pace (mm:ss/km)

Flat-equivalent effort

5:49/km

Energy cost

2.06×

Power hike zone

Yes

Pick a race to get course-specific next steps.

Trail Incline Calculator | PR Run