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.

Conditions

What the day adds.

Heat, humidity, altitude, and night running inflate finish time. See each factor's contribution.

Use with

Race time predictor

Start with a base finish time in ideal conditions.

Run the numbers

Course

Base finish h

Temperature (18°C)

Humidity (50%)

Max altitude (2500m)

Heat-acclimatized

Altitude-trained

Adjusted finish

33:06:16

Condition factors

Factor	Penalty	Hours added
Heat & humidity	+2.0%	+0.6h
Altitude	+3.5%	+1.0h
Night running	+4.8%	+1.5h

Load from course replay when a saved scenario exists.

Pick a race to get course-specific next steps.

Loading calculator…

Factor

Penalty

Hours added

Heat & humidity

+2.0%

+0.6h

Altitude

+3.5%

+1.0h

Night running

+4.8%

+1.5h