“Directions: Take exit 153 off I-94 and head toward N Dakota 1806. Turn right at Mandan Ave, Slight left on Old Red Trail/Township Rd 105 and turn right at N Dakota 1806. Follow 1806 for about 8.5 miles and turn left at 32nd St. (you will see a housing development on the right) Take immediate left and follow into parking area. Total distance is about 11 miles from Mandan.

Bismarck & Mandan's newest single-track - Harmon encompasses 20 miles of single-track, but don't let the number scare you - there are multiple different route options for a shorter ride. The trail offers a variety of terrain - from tight & canopy covered trail to fast & flowing, but don't be fooled - it has some elevation most non locals get surprised about.

Harmon Lake mountain biking trails

More info at - https://www.trailforks.com/region/harmon-lake-12474/?activitytype=1&z=12.9&lat=46.92698&lon=-100.98106