Geneseo Prairie Park is located on the northern outskirts of Geneseo across from the Hennepin Canal Parkway Trail. There are about 55 acres of forested and restored prairie land at the park with about 3 miles of doubletrack/singletrack hiking and mountain biking trails.
Most sections of trail are easily ridden on a mountain bike -- expect a couple punchy climbs that might require a dismount, some tight loose corners, and a few small trail features. Soils at the park are very sandy which lends itself well to fat bikes and quick dry times after rain. The existing trails are not well signed but trail maps are posted near common access points. The trails are laid out in a network with many intersections in the forested area. It's possible to stitch together a large loop that will incorporate most of the trails.
Most bikers will want to avoid the Ike's Fen trail (closest to the canal) because it has many muddy areas, slick narrow boardwalks, and a railroad tie stairway that requires a hike-a-bike.