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.

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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.

Races

Ultra Trail Du Mont-Blanc (UTMB)

Chamonix, FranceAugust

Chamonix. Three countries around Mont Blanc. Grand Col Ferret in the second night, then the long drop to La Fouly.

106 mi+33,639 ft-33,636 ft46:302,641 ft to 8,435 fttech 8/1024 stations3 countriesMont BlancWSER qualifierAugustWSER qualifierRunning Stones · 6 stonesHardrock qualifier

Distance106 mi

Gain+33,639 ft

Loss-33,636 ft

Altitude2,641 ft to 8,435 ft

Technicality8/10

Air28°F to 85°F

Gradient profileOfficial UTMB race GPX

Start3,396 ft
High8,155 ft
Low2,687 ft
Finish3,399 ft

Aid stations24 stops verified

Field, 2026 · 23-year sampleresults

Starters2407

Finish rate70%

Median38:10

Sub-2470

Geometrycourse math

Steepest drop2,379 ft-22.7% over 2.0 mi

Night miles57 misunset near 19:00 local

Weather at the cruxcourse math

At hour 8 of race, feels like 28 C (82 F).Sample of 7 race days, medium confidence.At hour 8 of race, apparent temperature P90 is 28 C / 83 F.

Mandatory kit17 required verified

Water container 1 L minimumhydration
Cap or bandanaclothing
Long trail-running pants or leggingsclothing
Warm and waterproof glovesclothing
Warm hatclothing
Warm second layer, long sleevesclothing

See full manual, 11 more items

Course records

Men10:30:37Jez BRAGG2010 results

Women11:47:30Elizabeth HAWKER2010 results

The cruxGrand Col Ferret (2,537 m) and Col du Montets

Course DNA

The Course

Chamonix out flat to Les Houches. Climbing starts after Saint-Gervais. Les Contamines, La Balme, Refuge Croix du Bonhomme, Les Chapieux. Grand Col Ferret at 2,537 meters on the Italy-Switzerland border in the second night. Long drop into La Fouly. Champex-Lac. Col du Montets still waits. Low near 2,641 feet. High near 8,435. Trail 70 percent, jeep 20, paved 10. Twenty-four aids. 46:30 on the clock.

The Work

Climbs run 3,000 to 4,000 feet without a break. Train continuous downhill. The quads fail on the cols if you skip it. Rehearse night transitions at alpine grade with poles and a packed wind layer. Long back-to-back weekends that mix August heat and alpine cold.

Kit

UTMB mandatory kit, no shortcuts. Modular headlamp and spare batteries. Packable windproof jacket. Survival blanket. Soft flask calories for crowded Courmayeur and Champex-Lac stops. August can swing from 28°F to 85°F on the same loop.

Race Day

Do not race Chamonix to Les Houches. Grand Col Ferret hits on the second night when the legs are already loud. Courmayeur and Champex-Lac are packed: bottles, food, leave. Col du Montets decides who still has a finish. Hold calories. Keep aid stops short with 46:30 on the clock.

Results