tBunk Endurance Challenge 200 Mile

Event Overview

Course & Terrain

Twenty-two counter-clockwise laps of the 9.19-mile Blue loop, 202.18 miles in all, from the Nordic trailhead shelter. The shelter is the start, finish, check-in and main aid station. The 3.66-mile Green loop that ends the 150-mile, 50-mile and 50K races is not part of the 200.

Key course features to know before comparing this race:

• The Nordic trailhead shelter on County Road H, passed after every loop
• The unstaffed aid stop about halfway around the Blue loop
• Counter-clockwise laps, against the ski-season arrows on the trail map

All races use the Nordic ski trail system in the Southern Kettle Moraine State Forest, and trail listings describe the course as entirely unpaved. The organizer puts the Blue loop at 750–850 ft of gain, depending on the GPS watch, which comes to roughly 16,500–18,700 ft (5,030–5,700 m) over 22 loops. Its UltraSignup text speaks of 1,700 ft of elevation change per loop and says the trails stay runnable whatever the weather.

The organizer warns that early-November Wisconsin weather is likely to test runners with temperature extremes. The 60-hour window spans two full nights, Friday and Saturday. On Friday and both nights the aid station is inside the shelter; on Saturday and Sunday daytime it may move outside if the weather allows.

Entry & Logistics

Why This Race Matters

The race is named for Tom Bunk, whom the organizer calls a mentor to many local ultrarunners, and all proceeds go to projects in the Kettle Moraine State Forest. The first was a permanent year-round shelter at the Scuppernong trailhead. The format dates from 2010, when Craig Swartwout ran 22 Blue loops at the Nordic trailhead in 58:52:51. Results start in 2013, and DUV numbers 2026 as the 14th edition. Robert Wehner is the race director. Few runners finish the 200: the organizer’s results show 17 finishes in 13 editions, and nobody finished in 2017, 2018, 2020 or 2022. Tina Koplinski is the only runner with more than one finish, in 2014, 2019 and 2021. Michelle Gallagher and Matt Bartz make up the organizer’s “tBunk Slam,” with finishes at all five distances from 50K to 200 miles. In 2025 Nicholas Steel won in 46:48:43, the second-fastest time after Lee Dalgety’s 44:32:21 course record from 2015, and four of 10 starters finished, the most in any year.

Historical benchmark notes in the directory record (verify current records with the linked official sources):

• Men: Lee Dalgety, 44:32:21, 2015
• Women: Tina Johnson, 52:23:19, 2014

Preparing for a Race Like tBunk Endurance Challenge 200 Mile

The 200-mile race guide covers the format as a whole. These guides go deeper:

• 200-mile race strategy: Pacing, sleep loss, aid stations, navigation, crew and feet, with a worked Moab 240 plan.
• Sleep strategy for multiday races: An individual sleep plan with safe locations and clear stop criteria.
• Crew and aid-station strategy: Crew tables, aid stops, drop bags and runner preferences.
• Foot-care kit for multiday running: Tape, lube, socks, blister pads and simple hot-spot rules.

Best Fit

• Runners attempting a first 200 miles on a loop course, with staffed aid and a drop bag every 9.19 miles
• Runners who want one base for the whole race, with a tent or camper beside the shelter on Friday and Saturday nights

Planning Notes

• Prepare for sleep decisions, weather swings, and aid-station discipline. The distance is only one part of a multi-day fixed-distance race.
• Train for terrain-specific fatigue. Technical trails and mountain courses demand downhill durability, hiking efficiency, and reliable night lighting.
• The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.
• Setting up, camping or sleeping in a vehicle at the trailhead on Thursday leads to disqualification.
• Runners must check in after every loop, inside the shelter on Friday and at night, even if they skip the aid station.
• Only a full finish earns the 200-mile buckle. A 200-mile runner who drops after completing 150 miles or more within 48 hours receives a 150-mile buckle.
• Bring your own bottle or cup: the race is cupless.
• There is no live tracking; results appear on the organizer’s blog after the race.

Event FAQs

Related Preparation

• Compare this race in the full 2026 calendar
• Open the 200+ Mile format guide
• Compare all race formats
• Use the timed-race pace calculator
• Plan checkpoint arrivals and cutoff buffers
• Print a pace band for your goal time
• Estimate race calories and plan fueling
• Build a crew and drop-bag plan
• Build a race-specific gear checklist