N 55th St 2.7 mi · dirt Monarch Rd 1.0 mi · dirt N 49th St 1.0 mi · dirt Ouray Dr 2.9 mi · dirt Oxford Rd 2.1 mi · dirt Coal Creek Trail, Superior to Erie 15 mi · gravel Rock Creek Trail 5.7 mi · gravel Davidson Mesa 3.1 mi · gravel Eggleston Dr to Goodhue Blvd 0.4 mi · gravel Gravel to Marshall 1.4 mi · gravel Gravel to 36 Underpass 0.6 mi · gravel Gravel Road 0.7 mi · gravel Buffalo Ranch Cross Country Course 2.0 mi · dirt Prospect Rd to Pike Rd 2.7 mi · gravel Plateau Rd to Co Hwy 31 2.3 mi · gravel N 51st St to N 49th St 1.7 mi · gravel N 59th St 1.2 mi · gravel Crane Hollow Rd 1.2 mi · gravel Oxford Rd to Nimbus Rd 1.5 mi · gravel Cottonwood Trail 1.2 mi · dirt Nimbus Rd 0.5 mi · gravel N 61st St to McCall Dr 1.7 mi · gravel N 63rd St 0.3 mi · gravel Ogallala Rd 1.0 mi · gravel Harper Lake 0.9 mi · gravel Oxford Rd 0.3 mi · gravel Open Sky Loop 4.9 mi · gravel Lake Link Trail 17 mi · gravel Northern Half of Dirty Buff Ride 28 mi · gravel East Boulder Teller Spur to East Boulder - Gunbarrel Trail 5.4 mi · gravel to North 55th Street 3.4 mi · gravel East Boulder - Gunbarrel Trail 1.7 mi · dirt April 8th 21 24 mi · gravel North 87th Street 45 mi · gravel Wolff Street to West 75th Avenue 36 mi · gravel Davidson Mesa Trail 3.8 mi · gravel McIntosh Lake Trail 2.0 mi · gravel Overbrook Trail 1.3 mi · gravel Cougar Trail 0.7 mi · gravel Niwot Hills Trail 0.6 mi · gravel Somerset Trail to Niwot Loop 1.5 mi · gravel Legend Ridge Loop 0.6 mi · gravel Legend Ridge Loop 0.8 mi · gravel Agricultural Heritage Museum Trail 0.2 mi · gravel Scott ride 15 mi · gravel East 17th Avenue 27 mi · gravel Stonebridge Drive 9.8 mi · gravel Boulder Reserve 13 mi · gravel CNDR 59 mi · gravel LoBo Trail 2.9 mi · gravel Powerline Trail to West Cherry Street 69 mi · gravel to Dillon Road 12 mi · pavement Coal Creek Trail 0.4 mi · gravel Morning Gravelish 38 mi · gravel Longhorn Road to Sage Trail 8.0 mi · gravel Alpine Avenue to North Street 31 mi · gravel House of Mott to Longmont-ish and Back via LoBo 34 mi · gravel Coal Creek / Marshall / Baseline / Valmont 34 mi · gravel Louisville 9.4 mi · gravel Lafayette and Louisville Loop 1 13 mi · gravel Longmont to Platte River 47 mi · gravel Eagle + Teller 31 mi · gravel Neva Route 17 mi · gravel Neva Road to North 39th Street 19 mi · gravel Tulip Street 37 mi · gravel Out and back to diry Bismark 21 mi · gravel Louisville to S Boulder 7.6 mi · pavement