4
riders
07:46
96.7km
2,330m
Gravel riding
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.
Last updated: April 2, 2026
Tips
Includes a very steep uphill segment
You may need to push your bike.
After 62.7 km for 80 m
Waypoints
Start point
Bus stop
Get Directions
21.2 km
Highlight • Summit
40.9 km
Highlight • Summit
96.7 km
End point
Bus stop
Way Types & Surfaces
Way Types
68.3 km
17.6 km
7.25 km
3.51 km
< 100 m
Surfaces
35.6 km
32.1 km
27.3 km
1.47 km
244 m
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Elevation
Highest point (1,330 m)
Lowest point (410 m)
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Weather
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Today
Saturday 27 June
21°C
13°C
13 %
Additional weather tips
Max wind speed: 15.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Description
If you're looking for a serious challenge that truly earns its 'difficult' rating, the Slate Mountain – Big Mountain loop from Placerville is a gravel biking route that delivers. This epic 60.1-mile (96.7 km) journey packs in a staggering 7635 feet (2327 metres) of elevation gain, demanding around 7 hours and 45 minutes of saddle time. It's definitely for experienced gravel biking enthusiasts seeking a demanding adventure in the Placerville area, offering some of the most challenging gravel biking trails and routes in the region.
What to expect on Slate Mountain – Big Mountain loop from Placerville
Expect a constantly changing visual landscape as you traverse the diverse terrain of El Dorado County. You'll ride through oak woodlands, chaparral, and grasslands before ascending into extensive mixed coniferous forests within the Eldorado National Forest. The route follows an extensive network of open forest roads and motorized trails, meaning you'll encounter unpaved surfaces, loose rocks, ruts, and some seriously steep sections that might even have you pushing your bike. The South Fork American River also makes an appearance, adding to the varied ecosystems. This is a ride for experienced gravel cyclists who thrive on physically demanding routes and aren't afraid of a bit of hike-a-bike.
Planning your visit
This challenging gravel biking route starts from Placerville, offering access to the Eldorado National Forest. Given the significant length and elevation gain, plan for an early start to complete the ride within daylight hours, especially if you're aiming for the estimated 7 hours and 45 minutes. Be prepared for varied terrain and potential hike-a-bike sections, and ensure you carry plenty of water and supplies as you'll be exploring remote areas. The best time of year for gravel biking in this area generally avoids the hottest summer months and potential winter snow.
Trail details
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