Belmont, MI, United States · Saturday, July 11, 2026

Fixed Distance 50K

Dirty Burg 50K Trail Run

Race completed
50 km Distance
not publishedn/a Climbing
2.5 est Grit · Entry level

Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.

43.0756° N, 85.6092° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 9 hours 10:48 min/km average. Generous. Walkable throughout for most of the field. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Tighter than 71% of 50K races. Measured against 1034 races of the same distance. Cut-off calculator →
Field size ~23 Small. Long stretches with nobody in sight.

DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, July

Daytime high 27°C
Night low 17°C
Rainfall Mostly dry
Daylight 15 h 10 m of light

Regional 2001-2020 average for July — NASA POWER, grid elevation 234 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2026 50km 23 Nicholas Hanson · 05:15:30 Finley Johnson · 05:32:35
2025 50km 17 Ryan Geers · 05:23:16 Megan Sanchez · 05:43:50
2024 50km 31 Dana Riederer · 04:44:43 Julie Riederer · 05:59:46
2023 50km 21 Kevin Rook · 04:38:33 Lindsey Benedict · 06:52:56
2022 50km 21 Sam Skeels · 04:39:50 Emily Vantol · 07:17:41
2021 50km 31 Jordan LaFreniere · 04:15:59 Jayne MacOmber · 06:18:02
2019 50km 33 Jake Roersma · 04:27:35 Jayne MacOmber · 05:47:32
2018 50km 38 Jordan LaFreniere · 04:05:53 Michelle Magagna · 04:21:39
2017 50km 46 Jordan LaFreniere · 03:39:24 Ashley Truan · 05:19:12
2016 50km 41 Coree Woltering · 03:41:16 Julie Berger · 05:08:59

The field grew 35% between 2025 (17) and 2026 (23). 26% of the 2026 field were women.

DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

The Aid Station

Course-specific beta from the community

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 50 km of trail.

  • Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition 50 km of self-supported fuelling between aid stations.
  • Hydration Vests Flask capacity for 50 km, without the bounce.
  • GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.
All gear guides →

Overview

The Dirty Burg 50K Trail Run, organized by Switchback Endurance, is a 50-kilometer fixed-distance trail race in Belmont, MI. Taking place in July, the course consists of a 10k loop, with 5.5 miles of single track trail culminating in a run up and down the ski hills of Cannonsburg Ski Area.

With a 9-hour time limit, this race has a tighter cutoff than 60% of its 1024 peer 50k races, requiring a pace faster than 10.8 minutes per kilometer. The field of 23 finishers in 2026 was smaller than 36% of its 2667 peer 50k races. This event has been held for 10 editions, starting in 2016 and continuing through 2026.

Similar races

Other 50K trail ultras, closest in distance first.