Underdown Recreation Area
W3221 Copper Lake Ave,
Irma,
WI
54442
The Underdown Recreation Area features 12 fat tire and mountain bike trail segments, totaling about 20 miles. Some sections are very challenging and geared for expert riders. Portions of the trail are used for the annual Thunderdown in the Underdown Mountain Bike Race. The marked horse trails are available for beginning bike riders or for family outings. Please yield the right of way to horses when encountering them on the trail.