More than a spectator friendly certified marathon, That Dam Hill is also London Ontario’s only ultra marathon timed race. If you register for a timed race, the first 42.2km (26.2 miles) you complete will automatically give you a certified marathon time. And yes, That Dam Hill is a certified Boston Marathon Qualifier!

Upcoming Races

Sep 14 2019
12 Hours
Multiple Loop Course
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
1 Surface Rating
Paved or very smooth surface
Sep 14 2019
24 Hours
certified 1.4 mile (2.2508km) loop
Multiple Loop Course
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
1 Surface Rating
Paved or very smooth surface

Results

24 Hours View course top times

Date Finishers Top Result Top Result (F)
09/15/18 25 110.133 76.567
09/16/17 21 121.3221 100.3433
09/17/16 33 119.9238 126.9167
09/19/15 11 190.749 180.965

12 Hours certified 1.4 mile (2.2508km) loop View course top times

Date Finishers Top Result Top Result (F)
09/15/18 9 73.77 61.183
09/17/16 8 62.5819 34.6103
09/19/15 7 100.717 100.717
09/20/14 19 75.8532 68.1768

50 Miles View course top times

Date Finishers Top Result Top Result (F)
09/16/17 6 10:16:08 10:45:01
09/20/14 10 7:22:24 8:24:53

6 Hours View course top times

Date Finishers Top Result Top Result (F)
09/19/15 25 63.25 62.453
09/20/14 24 36.6926 37.967
09/21/13 48 43.8991 44.45338

50 KM View course top times

Date Finishers Top Result Top Result (F)
09/20/14 32 4:24:52 4:46:21
09/21/13 24 4:11:17 4:05:59
We try to keep the most accurate information about this race, but changes do happen. Always visit the official race website for the most up to date information.
Iron Bull Ultra
  • Oct 5, 2019
  • Wausau, WI
50 KM