Boise Riverside RV Park
Campground
Campground · 6.5 mi from the trail
Idaho · Mountain biking · Near Idaho City
#18 Quarry
- 0.6 mi
- round trip
- 372 ft
- climb
- Mixed
- surface
- Out and back
- route
- Apr–Jun, Sep–Oct
- best months
The #18 Quarry trail in Idaho is a 0.55-mile out-and-back route with 311 feet of elevation gain. The mixed-surface trail is rated as moderate difficulty and marked as an IMBA Intermediate / Blue Square route.
Around this trail
Add any of these when you start a tripSleep close Eat after 
If it rainsCamEQ, Facade of Art Museum designed by Trout Architects and Mark Mack in 1988, Public domain · Wikimedia Commons
Places © OpenStreetMap contributors · Photos: CamEQ, Facade of Art Museum designed by Trout Architects and Mark Mack in 1988, Public domain (commons)
More in Idaho CityLocal outfitters
- Riverpond Campground36 mi away
Not on Roamze yet. Their page has how to reach them.
Best time to go · Apr–Jun, Sep–Oct
Best time to visit #18 Quarry
Best months: April–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
39° / 26°
11 wet · 5 snow
Feb
46° / 29°
9 wet · 3 snow
Mar
55° / 35°
10 wet · 2 snow
Apr
62° / 40°
9 wet
May
72° / 48°
8 wet
Jun
81° / 54°
5 wet
Jul
93° / 62°
3 wet
Aug
91° / 61°
2 wet
Sep
80° / 53°
4 wet
Oct
65° / 42°
6 wet
Nov
49° / 32°
10 wet · 2 snow
Dec
39° / 25°
12 wet · 5 snow
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Boise Air Terminal, ID, 4.6 mi away at 2,814 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Keep exploring — more rides worth the drive
RIDE
#19A Shoshone-Bannock Tribes Trail
Next door
0.20-mile out-and-back trail in Idaho with 54 ft gain.
RIDE
#19 Shoshone-Paiute Tribes Trail
Next door
#19 Shoshone-Paiute Tribes Trail is a 0.71-mile out-and-back route in Idaho with 621 ft of elevation gain.
RIDE
#15 Table Rock
Next door
1.57-mile out-and-back trail in Idaho with 1,128 ft elevation gain.
RIDE
#19A Shoshone-Bannock Tribes Trail
Next door
0.15-mile out-and-back trail on mixed terrain with 27 ft elevation gain in Idaho.
RIDE
#15A Old Pen
Next door
0.6 mi · Moderate
RIDE
#14 Tram
~2 min drive
#14 Tram is a 1.19-mile out-and-back trail in Idaho with 1,095 ft of elevation gain.
RIDE
#19A Shoshone-Bannock Tribes Trail
Next door
0.78-mile out-and-back trail with 167 ft gain in Idaho.
RIDE
#16B Rock Island (West)
~2 min drive
0.51-mile out-and-back trail in Idaho with 30 ft elevation gain on mixed terrain.
RIDE
#16B Rock Island (West)
~2 min drive
0.31-mile out-and-back trail in Idaho with 168 ft elevation gain on mixed terrain.
RIDE
Connector
Next door
0.14-mile easy out-and-back trail in Idaho with 34 ft elevation gain
Map and trail data © OpenStreetMap contributors
