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WEMS Wisconsin Mountain Bike Series race

Thunderdown in the Underdown at Prairie Dells

You are here: Home / 2021 Races / Thunderdown in the Underdown at Prairie Dells
Thunderdown in the Underdown

May 3, 2021 //  by kendra

August 13st, 2022

Location:
Prairie Dells Trail Head
Heineman Road
Merrill, WI

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This is Wisconsin’s Ultimate Lap! The Iron Bull Epic!
Ride the 33 mile lap or a 13 mile adventure from Prairie Dells over 7 daunting hills to Underdown Lake. This WEMS Series event is held in conjunction with the IronBull Underdown Trail Races.

LIVE music, drinks, food and fun!

7:00 – 11:00am: Packet pickup

WEMS Underdown Mountain Bike Races

8:00 AM (Hundred Down)
Long-distance Solo: 3 laps completed between 8AM and Midnight. Riders completing two laps will be scored after riders completing three laps.

9:00 AM (Thunderdown)
Mid-distance Solo: One 33-Mile lap

Long-distance Duo: One 33-Mile lap completed by each rider both starting at 9AM (NOT a tag team relay!)

9:15 AM (Oktoberfest Summit)
Short-distance Solo: One 13-Mile lap. Finish this and change your shoes by 11:30am and earn a free entry to the Oktoberfest Half-Marathon

Mid-distance Duo: One 13-Mile lap completed by both riders starting at 9:15AM (NOT a tag team relay!)

Long-distance Team: One 13-Mile lap completed by all riders starting at 9:15AM (NOT a tag team relay!)

IRONBULL Underdown Trail Running Races

9:30 AM (IRONBULL Prairie Dells 50K Run Start)

10:00 AM (IRONBULL Heineman Hills Marathon Run Start)

11:30 AM (IRONBULL Oktoberfest Half-Marathon Run Start)

W.E.M.S. Guidelines: All W.E.M.S. guidelines will be followed.

Category: 2021 Races

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Wisconsin Endurance Mountain Bike Series

1 week ago

Wisconsin Endurance Mountain Bike Series
A run at the Thunderdown! ... See MoreSee Less

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2 weeks ago

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A Prairie Dells start for the Thunderdown! ... See MoreSee Less

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Wisconsin Endurance Mountain Bike Series

2 weeks ago

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A Prairie Dells start this year!13 or 33 mile laps. ... See MoreSee Less

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3 weeks ago

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Race Results from yesterdays event. Shout out to Team Pedal Moraine for hosting the event! ... See MoreSee Less

2022 WEMS #5 -Northern Kettles Endurance Challenge | Race results

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Race results: 2022 WEMS #5 -Northern Kettles Endurance Challenge @ Glenbeulah, WI, United States. Saturday, July 23, 2022 8:00 AM (GMT-5)
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3 weeks ago

Wisconsin Endurance Mountain Bike Series
10 hours of Greenbush is almost 2 hours in and the WEATHER is looking to be very nice. Day of Registration is OPEN for the 6 Hour and 3 Hour races.6 Hour race starts at 11:00am3 Hour race starts at 1:00pmDuo Teams are welcome for all durations!! ... See MoreSee Less
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