Single track on mostly firm sand except for a soft pocket at the trail base. Most frequently traversed from Engineer Canyon Rd to Trail 05 but use is bi-directional. It affords a nice view of the ridge crested by Trail 36 as it comes up on the shoulder of the ridge crested by Trail 05. The lower segment of 39 does not receive as much use as the 38/37 segments but then the traffic from 38/37 joins onto 39 midway along its course. Descending speeds will exceed 15 mph and ascending speeds will be around 6 mph.
Length 0.4 miles Blue Circle Multiuse trail. Bi-directional use: Bicycle>Foot>Horse

| Start | Finish | Elevation loss (ft) | Elevation Gain (ft) | Average Slope (%) | Maximum Slope (%) |
| 05 | Engineer Canyon Rd | 98 | 40 | 6 |
Segments
| Segment start | Segment finish |
Distance (mi) |
Total Distance (mi) |
Comments |
| 05 | 38 |
0.17 |
0.16 |
Firm Sand with some sandstone |
| 37 | 38&39 | 0.18 | 0.35 |
soft sand in spots |
| 38 & 39 | 38 & 39 | 0.02 | 0.37 |
soft sand in spots |
| 38 & 39 | Engineer Canyon Rd | 0.01 | 0.38 |
Firm sand |

Pictures
© Nick Mackenzie 2001-2002
Updated 10/30/06 12:16:18