Old Billy
- 0.6 mi
- round trip
- 425 ft
- climb
- Mixed
- surface
- Out and back
- route
- Mar–Jun, Sep–Oct
- best months
Old Billy is a short, easy mountain biking route in Hells Gate State Park in Washington, managed by State Park and Recreation. The ride is an out-and-back of about 1.2 miles, with a total elevation gain of 425 feet, and it starts and ends near 980 feet. The climb is steepest around the halfway point, with a grade of about 16 percent, and the high point reaches about 984 feet. The most comfortable months for a ride are typically late spring and early fall. Typical averages from a nearby weather station in Lewiston, Idaho, show May highs around 72°F and September highs around 79°F, while July and August average highs near 90°F. Dogs are allowed on this route. Griffin's Cutoff and Sundown Cutoff are both mountain biking routes about 0.1 to 0.2 miles away, and the Hells Gate climbing area is about 0.9 miles off.
Best time to go · Mar–Jun, Sep–Oct
Best time to visit Old Billy
Best months: March–June and September–October. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.
Jan
42° / 30°
11 wet
Feb
47° / 32°
10 wet
Mar
55° / 36°
12 wet
Apr
62° / 41°
11 wet
May
72° / 48°
11 wet
Jun
79° / 54°
8 wet
Jul
91° / 61°
5 wet
Aug
90° / 60°
3 wet
Sep
79° / 52°
5 wet
Oct
63° / 42°
8 wet
Nov
49° / 34°
11 wet
Dec
41° / 29°
11 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Lewiston Nez Perce Co Ap, ID, 2.2 mi away at 1,436 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
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Map and trail data © OpenStreetMap contributors
