Ridge sand road with section known as "the three sisters", three short peaks with moderate to steep pitches that some riders may prefer to walk Good road bed of firm sand. This ridge offers a nice view of Mt. Toro to the east, Freemont Peak to the north east and Pilarcitos Canyon and Look Out Ridge to the north. Most use of this trail is from east to west. Trail 10 is a destination trail because of the "three sisters" and it is also a prime connector trail because it provides access from Jacks Rd to the popular 41, 42, 43 and 44 trails. Bicycle speeds max out at over 20 mph on the descending slopes and drop to 4 mph on ascent.
Blue Circle Multiuse road. Bi-directional use: Bicycle>Foot>Horse

| Start | Finish | Elevation loss (ft) | Elevation Gain (ft) | Average Slope (%) | Maximum Slope (%) |
| Oil Well Rd | Jacks Rd | 275 | 228 | 6 |
Segments starting from Jacks Rd
| Segment start | Segment finish |
Distance (mi) |
Total Distance (mi) |
Comments |
| Jacks Rd | 42 |
0.21 |
0.21 |
Fire Road, Short moderate climb |
| 42 | 43 & 44 | 0.53 | 0.74 |
Fire Road, Short steep climb |
| 43 & 44 | 41 |
0.06 |
0.80 |
Fire Road |
| 41 | Oil Well Road |
0.65 |
1.45 |
Fire Road, Short moderate climb |

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