Schedule of Events


6:30 AM to 7:30 AM
100 mile packet pickup / check-in

8:00 AM
100 mile race start

10:30 AM
Approx first runner through first 17 mile loop

10:30 PM to 11:30 PM
50 mile packet pickup / check-in



12:01 AM
50 mile race start

2:00 AM to 5:00 AM
Approx first 100 mile finisher, CR is 18:04:00

5:30 AM to 6:30 AM
34 mile packet pickup / check-in

7:00 AM
34 mile race start

7:00 AM to 8:30 AM
17 mile packet pickup / check-in

7:30 AM to 9:30 AM
Approx first 50 mile finisher, CR is 7:49:36

9:00 AM
17 mile race start

10:50 AM to 11:30 AM
Approx first 17 mile finisher, CR is 1:50:18​

12:00 PM
Approx first 34 mile finisher, CR is 5:05:40

12:45 PM
Mile 85/34/17 cutoff for 100/50/34 mile runners. Runners must be starting their final loop (6, 3 or 2 respectively) before 12:45 PM

6:00 PM
Final cutoff (34 hours for 100’s, 18 hours for 50’s, 11 hours for 34’s, 9 hours for 17’s), race is over


Subject to change

Zumbro Endurance Run
100MI, 50MI, 17MI Trail Race(s)
Theilman, Minnesota
April 10 & 11, 2020
• 100MI Friday 8:00AM
• 50MI 12:01AM Saturday (Friday Midnight)
• 17MI 9:00AM Saturday

Opens Fri Nov 1, 2019 – 12:01AM CST
Closes Fri April 3, 2020 – 11:59PM CST
*Or once the field limit has been met
Complete Registration Details HERE

Directions to Race Start:
Zumbro River Bottoms Management Unit
West Assembly Area
(Near Theilman, MN)
Google Maps Directions HERE
Written Directions HERE
(Approx 1:45 south of Minneapolis, MN)

The course consists of a mix of rugged single and double track trail with rubble, loose rock and sand along with minimum maintenance gravel roads.  The race is primarily concentrated in two large valleys within an expansive hardwood forest.  There are four significant, short, steep climbs (approx 300FT) per loop with small hills in-between along with some significant stretches of flat valley floor running.  Be sure to see maps, elevation charts and stats provided on this website HERE.

100 Mile:
6 x 17 mile loop = 102(ish) miles
Elevation Gain 13,500 FT
Elevation Loss 13,500 FT
NET Elevation Change 27,000 FT
17 Aid Stations
34 hour time limit
Complete 100MI Info HERE

50 Mile:
3 x 17 mile loop = 51(ish) miles
Elevation Gain 6,750 FT
Elevation Loss 6,750 FT
NET Elevation Change 13,500 FT
8 Aid Stations
18 hour time limit
Complete 50MI Info HERE

17 Mile:
17 Mile Loop
Elevation Gain 2,250 FT
Elevation Loss 2,250 FT
NET Elevation Change 4,500 FT
2 Aid Stations
9 hour cutoff
Complete 17MI Info HERE

More About the Area:
The Zumbro Endurance Run 100MI, 50MI and 17MI trail races take place within the Zumbro River Bottoms Management Unit in Southeastern Minnesota’s Bluff Country – just outside of the tiny village of Theilman, MN approximately 1:45 from Minneapolis – St.Paul, MN.  The races start and finish at the West Assembly / Horse Campground Area.  Generally speaking the Zumbro River Bottoms Management Unit lies within a portion of the Richard J. Dorer Memorial Hardwood Forest – an expansive 1.7 million acre tract of Minnesota hardwood forest on the Northern edge of the Driftless Region which is mainly characterized by its tall bluffs and deeply carved river valleys. This “bluff country” is rugged, hauntingly beautiful and provides the perfect venue for 100, 50 or 17 miles of trail running.