Boulder Ranger District - Arapaho / Roosevelt National Forest
Open 4WD Roads
Road Name Forest Service
Road Name		 FR # Difficulty Miles Status
Baltimore Ridge Baltimore Ridge 416 Easy 4 0.86  
Beaver Reservoir Beaver Bog 507.1E Easy 1 1.52 Seasonal Jun 15 to Nov 30
Buckeye Mountain Buckeye Mountain 512   1.03  
Buffalo Gulch Buffalo Gulch 283 Easy 1 0.34 Access? Crosses private
Bunce School Road Bunce School Road
Bennett Access		 105 Easy 3 6.41 Includes 115.1A, .1B, 213.1
Bunce School Cutoff Cave Creek 217 Easy 3 1.97 Includes 217.1A,.1C,.1D
Button Rock Loop Button Rock B 118.1 Easy 4 0.76 Includes 118.3 (part)
Caribou Caribou
Eldora
Caribou Park		 116J
128J.3
505		 Moderate 5 2.00
0.75
11.50		 Seasonal Jun 15 to Nov 30
Includes 116J.1, 505.2A,.2B(signed)
Chipmunk Gulch Chipmunk Gulch 376 Easy 2 0.42  
Coney Flats Coney Flats 507 Moderate 6 6.75 Seasonal Jun 15 to Nov 30
Includes 507.1A-.1D(signed)
Conifer Hill Conifer Hill 185 Easy 1 2.37  
Dakota Hill Dakota Hill 412 Easy 2 3.81 Includes 412.1E,.1L,.2,.2C,.2E
Delonde Delonde Spur 496 Easy 2 0.67  
Dry St. Vrain Big John Mountain
Dry St. Vrain		 186
200.1		 Easy 2 3.46
0.24		 Includes 186.1C,.1D,.1I
Farewell Gulch Farewell Gulch 237 Easy 2 2.00 Includes 237.1B-D,.1H-I(signed)
Gamble Gulch Gamble Gulch 411   2.10 Includes 411.1A,.1B,.2A,.2C
Gold Lake Gold Lake 372 Easy 3 2.83 Includes 372.1B,.1E,.1F,.1G
Golden Age Hill Golden Age 284 Easy 3 5.22 Includes 284.1A,.1D,.1H,.1I
Gordon Gulch Gordon Gulch 233 Easy 2 2.50 Includes 233.1A,.1C,.1D,.1F(signed)
Gross Reservoir Forsythe Spurs 68.2B Easy 2 0.30  
Inspiration Point Rocky Point 453 Easy 2 0.70 Includes 453.1A,.1B(signed)
Ironclads Ironclads 216 Moderate 6 2.93 Includes 216.1A
Jenny Creek Jenny Creek 502
808		 Moderate 7 6.30
1.89		 Includes 502.3A
808 (signed)
Jenny Lind / Perigo Jenny Lind / Perigo 413   5.54 Includes 413.1A
Johnny Park Johnny Park 118 Easy 3 5.49 Seasonal Jun 15 to Nov 30
Jumbo Mountain Jumbo Mountain 289 Easy 3 1.90 Includes 289.1A, 432.1B
Kingston Peak Kingston Peak 353 Moderate 5 9.93 Includes 187.1(signed), 353.2B,.3A,.3B
Knob Knob 458 Easy 4 0.93 Includes 458.1A,.1B
Lefthand Reservoir Lefthand Park Reservoir 232 Easy 1 1.81 Seasonal Jun 15 to Nov 15
Lump Gulch Fairburn Mountain
Skydale		 409.1
410.1		   3.81
3.17		 Includes 4.09.1A,.1G-.1I,.2D
Includes 410.1A
Mammoth Gulch Mammoth Gulch 176 Easy 3 3.19  
Matchless Matchless
Garnet Spur		 314
226		 Easy 2 3.21
0.84		 Includes 314.1A,.1E,.1H
Middle St. Vrain Middle St. Vrain 114 Moderate 7 4.94 Seasonal Jun 15 to Nov 30(signed)
Miller Rock Miller Rock
Cannon Mountain
Headache		 252
254
523		 Difficult 8 7.53
2.38
4.36		 Inlcudes 252.1A,.1C,.2A,.2B(signed)
Includes 254.1F(signed)
Includes 523.1B-.1D(signed)
Moon Gulch Moon Gulch 290 Moderate 5 2.15 Includes 290.1A (signed)
Mount Alto Mount Alto Spurs 456 Easy 3 1.40 Includes 456.1A-.1D(signed)
Nebraska Hill Nebraska Hill 183 Easy 2 0.76  
Park Creek Upper Basin 202 Easy 3 2.94 Seasonal May 15 to Nov 30
Includes 202.1A,.1C(signed)
Peewink Mountain Peewink Mountain 332 Easy 2 3.25 Seasonal
Includes 332.1A,.1C-D,.1F,.1G(signed)
Pennsylvania Gulch Pennsylvania Gulch 95J Easy 4 3.92  
Perigo E. Dakota Hill 417 Easy 2 1.37 Includes 417.1A
Phoenix Rollinsville
S. Tennessee Mtn		 105.1
109.1		 Easy 3 10.96
1.55		 Seasonal May 15 to Nov 30
Includes 105.1A-C,.2A,429.1
Includes 109.1B
Prophyry Mtn Prophyry Mtn 281   0.71  
Rainbow Lakes Rainbow Lakes 116 Easy 1 2.50 Seasonal Jun 15 to Nov 30
FS / Boulder Cnty(signed)
Rock Creek Rock Creek 116.2 Easy 4 4.66 Includes 116.2B,.2C,.2E,.2G-I(signed)
Rollins Pass East Moffat Road 149 Easy 1 13.54 Includes 148.1, 501.1 (signed)
Ruby Gulch Fourmile Creek 328 Easy 1 2.68 Includes 328.1A-.1F(signed)
Sawmill Gulch Sawmill Gulch Cutoff 461 Easy 2 1.08 Includes 461.1A,.1B
Sherwood Creek Sherwood Creek Spur 497   0.17  
Starnes Starnes 380   0.70 Part Closed in Lump Gulch fuels
Switzerland Trail Switzerland Trail 93 Easy 1 1.90  
Switzerland Trail Spurs Switzerland North 221 Easy 1 1.52 Includes 221.1A-.1C
T-33 Crash Site North Basin 203 Moderate 6 1.10 Seasonal May 15 to Nov 30
Includes 203.1(signed)
Taylor Mountain Taylor Mountain 330 Easy 2 2.91 Seasonal May 15 to Jan 30
Includes 330.2B,.2C(signed)
Tree Farm Tree Farm 378 Easy 1 0.25
Tuscarora Cutoff Tuscarora Cutoff 460 Easy 2 0.35  
Upham Gulch Upham Gulch 228 Easy 3 2.30 Includes 228.1A-.1D
West Magnolia Observatory 355 Easy 2 4.10 Seasonal May 15 to Nov 30
Includes 355.1A,.1C,.1D,.1E,.1G,.1K,.1U,.1V(signed)
Winiger Gulch Gross Reservoir 97.1 Easy 1 2.68 Seasonal May 15 to Nov 30
Winiger Ridge Winiger Ridge 359   2.40 Seasonal May 15 to Nov 30
Includes 359.1A,.1P
    316   0.50  
Total Miles of Recreation Roads OPEN 198.35
Last Modified: 11/07/22

Notes:

Roads listed are shown on the Boulder Ranger District Motor Vehicle Use Map (MVUM).

Road mileage is taken from Forest Service INFRA data as of January 2005 and Motor Vehicle Use Map. It has been cross refereced with Forest Service topo maps, from 2000 and 2002, overlayed with transportation routes.

Difficulty ratings are based on an average. To some, the levels list the road as easier than they are, while to others they are listed as harder. Consider this when choosing roads to drive. Know your ability. If you are new to four wheeling, start at the easy level and work up to find your highest ability.