tBunk Endurance Challenge

November 6th 2026
LaGrange, WI
50 KM | 50 KM | 50 Miles | 100 Miles | 150 Miles | 200 Miles

We wanted the tBunk Endurance Challenge to reflect the personality of the runner it’s named for. So this event is tough but fair. There is plenty of elevation change (1,500 feet per loop) and the weather in Wisconsin at the beginning of November will likely test your ability to deal with temperature extremes. But, unlike some long distance events, ours is designed to test your mettle not your patience. No matter what the weather, these trails will remain runnable. So if you’ve ever thought about challenging a new distance, or setting a PR at one you’ve already conquered, this is the event for you.

All the events will be run primarily on the Nordic Blue loop. The loop is 9.19 miles in length and will include an unmanned aid station at the half way point and a manned aid station at the start/finish. See website for complete info.

Upcoming Races

Nov 8 2026
50 KM (Day)
Multiple Loop
9:00 Cutoff
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts
Nov 7 2026
50 KM (Night)
Multiple Loop
9:00 Cutoff
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts
Nov 7 2026
50 Miles
Multiple Loop
13:00 Cutoff
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts
Nov 7 2026
100 Miles
Multiple Loop
30:00 Cutoff
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts
Nov 6 2026
150 Miles
Multiple Loop
48:00 Cutoff
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts
Nov 6 2026
200 Miles
Multiple Loop
60:00 Cutoff
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts

Additional Distances

This event also has the following sub ultra distances

15 KM

Results

Date Finishers Top Result (F) Top Result (M)
11/09/25 (Day) 35 4:31:38 4:10:46
11/08/25 (Night) 3 5:10:00
11/10/24 49 4:45:01 3:58:08
11/09/24 (Night) 5 9:39:15 9:21:15
11/12/23 55 4:14:10 3:50:22
11/11/23 (Night) 17 6:25:00 5:35:00
11/13/22 51 4:38:05 3:56:30
11/12/22 (Night) 8 6:30:52 6:54:00
11/14/21 49 4:47:13 4:11:52
11/08/20 33 4:28:26 3:43:05
11/08/19 46 5:07:30 4:29:57
11/02/18 34 4:51:45 4:29:44
11/03/17 29 4:51:10 4:18:49
11/06/16 40 5:43:15 4:21:23
11/06/15 17 5:38:49 5:22:50
11/02/13 54 5:09:37 3:47:04
Date Finishers Top Result (F) Top Result (M)
11/08/25 41 6:45:41 6:52:52
11/09/24 38 7:16:18 6:44:20
11/11/23 34 8:17:33 7:05:59
11/12/22 17 8:08:24 7:50:31
11/13/21 28 8:44:51 7:31:28
11/07/20 26 9:15:09 6:30:04
11/08/19 31 10:22:36 7:37:47
11/02/18 36 9:20:51 7:06:26
11/04/17 27 9:27:19 7:53:13
11/05/16 28 9:10:02 6:46:01
11/06/15 21 9:15:48 8:00:20
11/02/13 21 9:52:08 7:20:01
Date Finishers Top Result (F) Top Result (M)
11/08/25 13 27:29:40 21:31:00
11/09/24 11 23:47:10 23:07:56
11/11/23 12 24:46:00 19:39:00
11/12/22 12 24:39:40 18:48:00
11/13/21 11 21:20:35 17:32:40
11/07/20 13 24:16:19 21:20:00
11/08/19 9 22:18:11 22:14:55
11/02/18 8 23:29:40 18:53:32
11/04/17 19 21:55:33 18:19:58
11/05/16 17 20:45:20 18:51:00
11/06/15 23 25:45:02 19:46:00
11/02/13 12 22:23:23 19:54:57
Date Finishers Top Result (F) Top Result (M)
11/07/25 1 46:52:02
11/08/24 4 45:00:29 35:02:50
11/10/23 No Ultra Finishers
11/11/22 No Ultra Finishers
11/12/21 4 32:51:30
11/06/20 No Ultra Finishers
11/08/19 No Ultra Finishers
11/02/18 1 44:55:50
11/03/17 3 47:50:33 39:00:50
11/06/15 2 42:13:11
11/02/13 7 41:00:46 38:35:26
Date Finishers Top Result (F) Top Result (M)
11/07/25 4 58:19:25 46:48:43
11/08/24 1 56:28:40
11/10/23 1 57:36:24
11/11/22 No Ultra Finishers
11/12/21 1 53:59:30
11/06/20 No Ultra Finishers
11/08/19 1 55:12:15
11/02/18 No Ultra Finishers
11/03/17 No Ultra Finishers
11/04/16 1 57:41:20
11/06/15 3 44:32:21
11/02/13 2 57:42:29 51:17:55

Weekly Newsletter

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