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Punchy climbs and fun descents is what the Underdown is about.


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Map Key

8.7

Miles

14.0

KM

Singletrack

1,648' 502 m

High

1,495' 456 m

Low

708' 216 m

Up

704' 214 m

Down

3%

Avg Grade (2°)

19%

Max Grade (11°)

Dogs Off-leash

E-Bikes Unknown

Lincoln County trail pass required.

Description

Trail type is best described as "raw" wilderness trail. Not flow or manicured by any means. There has been some machine built updates but that only softens some of the climbs and keeps drainage in check.

Starting from the north trailhead, enter the singletrack on the very west end of the parking lot. You'll be immediately greeted with the punchy climbs and short descents the Underdown is known for. You'll drop onto Loop Road for a hundred yards or so before ducking right into singletrack for more climbing. There are a couple of descents across bridges near some remote lakes before a nice descent into Dog Lake. Take a break by the shelter or keep movin' if the bugs are bad.

More ups and downs await after Dog Lake, eventually descending to the intersection with Old School. Stay left onto Skipping School cutoff for a quicker route to Roundtop climb which of course rewards you with a fun descent and a few boardwalk crossings. Cross the Over/Under bridge and stay right at the intersection with The Hollow. Continue north with more rooty/rocky ups and downs meeting up with Homestead Loop. Stay left for a quick climb then fun fast descent eventually doubling up on a short piece of two track climb.

At the top head straight into the woods for more singletrack switchback descending linking up with an old segment known as the Bumpy Bog. This is not exactly a smooth cruise through the old hemlock stands, but fortunately this is actually one of the flattest sections of the loop.

You'll eventually exit into and opening just off of Loop Road. Head straight north across the opening into the last segment of this loop known as the gravel pit climb. A touch steep at first you'll hammer along the top of the ridge with some sort rooty and rocky ups and downs and a sweet bermed boardwalk descent (very slippery when wet!!). Only a few more roots and rocks and you back home to the parking lot.

Contacts

Shared By:

Matt Block

Trail Ratings

  4.7 from 3 votes

#7864

Overall
  4.7 from 3 votes
5 Star
67%
4 Star
33%
3 Star
0%
2 Star
0%
1 Star
0%
Trail Rankings

#157

in Wisconsin

#7,864

Overall
1 Views Last Month
207 Since Aug 21, 2019
Intermediate/Difficult Intermediate/Difficult

0%
0%
0%
67%
33%
0%

Photos

Wooden structure with GripStrips.
Mar 6, 2025 near Merrill, WI
Trailhead sign
Mar 6, 2025 near Merrill, WI

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Weather


Current Trail Conditions

Unknown
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Check-Ins

Jul 18, 2023
Andrew Sedahl
Oct 8, 2022
Alex Hatlevig
Great trails! Slippery because of leaves 9mi
Jul 5, 2022
Captain Nick
Definitely some of the best cross country singletrack in Wisconsin. Some small trees down, watch out or you'll knock your noggin. 8.7mi
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