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.

Grade-adjusted pace

What the slope costs.

Convert pace on any gradient to flat-ground effort, or target a pace for a given slope. Minetti energy cost model.

Model

Minetti 2002

Same biomechanical basis as Strava and Garmin GAP.

Use

Race pacing

Hold effort, not pace, on climbs and descents.

Run the numbers

Course

Gradient (%)

Positive uphill. Negative downhill.

Actual pace (mm:ss/km)

Grade-adjusted pace

4:51/km

Gradient table

Grade	Actual pace
-30%	3:19/km
-25%	2:44/km
-20%	2:26/km
-15%	2:28/km
-10%	2:54/km
-5%	3:42/km
0%	4:51/km
+5%	6:19/km
+10%	8:03/km
+15%	10:00/km
+20%	12:09/km
+25%	14:28/km
+30%	16:58/km

Pick a race to get course-specific next steps.

Loading calculator…

Grade

Actual pace

-30%

3:19/km

-25%

2:44/km

-20%

2:26/km

-15%

2:28/km

-10%

2:54/km

-5%

3:42/km

4:51/km

+5%

6:19/km

+10%

8:03/km

+15%

10:00/km

+20%

12:09/km

+25%

14:28/km

+30%

16:58/km