Events
Race Directors

mammoth trailfest.

September 25th 2026
Mammoth Lakes, CA
Website
Registration
Results
50 KM
More events by mammoth trailfest.
Submit a correction

mammoth trailfest. Race Results

50 KM

Date Finishers Top Result (F) Top Result (M) Top Result (X)
09/20/25 642 5:03:55 4:07:38 7:50:18
09/21/24 539 5:23:14 4:12:47
09/23/23 418 5:13:19 4:22:16 10:28:57
09/24/22 234 5:21:19 3:58:52

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

Recent Results

Barr Lake
Brighton, CO - 34 finishers
50 KM
Table Rock Trail Challenge
Jamesville, NY - 2 finishers
Backyard
Cotter Bridge Ultra
Cotter, AR - 24 finishers
50 Miles
Survivorfest
Sherwood Park, AB - 109 finishers
24 Hours | 24 Hours | 24 Hours | 12 Hours | 12 Hours | 6 Hours | 6 Hours
Gulch Countdown
Mukilteo, WA - 6 finishers
Backyard
Hidden Oasis Ultra
Cypress Hills Interprovincial Park, AB - 77 finishers
50 KM
Ultra Obscura
Sutton, QC - 10 finishers
84 KM | 66 KM | 52 KM
Ansonia Six Hour Trail Run
Ansonia, CT - 12 finishers
6 Hours
Mary's Peak Trail Run
Blodgett, OR - 102 finishers
100 KM | 50 KM
Kettle Moraine 100 Endurance Runs
La Grange, WI - 346 finishers
100 Miles | 100 KM | 38 Miles | 50 KM
View All Results