Mammoth Rock Trail is a quintessential ride that every mtb’er who visits Mammoth Lakes must put on their list! It’s 95% singletrack with gorgeous views of the town all the way across to the Long Valley Caldera and the White Mountains. This trail is open to equestrians, hikers, and trail runners – so be aware. Although many people ride it “down” as a shuttle (described here), you can climb up it, do it as an out and back, or loop it with Old Mammoth Rd (pavement) as well. It’s also great to link up with the Panorama Dome Trail, coming down from the Mammoth Mountain Bike Park on the Lakes Trail, etc – contact us about putting together a great ride. The last section right before you reach Sherwin Creek Rd can be pretty sandy, and overall trail conditions vary depending on horse traffic – but all in all, it’s stellar riding, with a few technical sections and some exposure. Intermediate to advanced descending skills a must.
This can be a great trail to ride on a fat bike once the snow starts flying. Early winter, or when there’s not too much snow, it can be amazing. It tends to be packed well by snowshoers and hikers during the winter holidays. For more riding, it can be combined with the Old Mammoth Rd Snow Ride and/or the Meadows Ride. NOTE: Once there has been enough snowfall, the Sherwins (the mountains that the trail traverses) becomes a very popular area for skiing. Please DO NOT try to ride this trail, or pack the trail for snow riding during these periods. We don’t want to create any danger for backcountry skiers/snowboarders crossing through! Not sure about proper riding conditions? Contact us and we’ll give you the thumbs up or down for snow riding.
- Ride Type: Point to Point, as described (although you can out-and-back or loop it with Old Mammoth Rd as well)
- Difficulty: Moderate to Advanced descending skills required. Some technical/ rock gardens and exposed sections with steep drop offs. If climbing, it can be fairly strenuous depending on trail conditions.
- Time of Year: Summer and Fall (sometimes late spring – depending on snow pack)
- Terrain/Conditions: Almost all singletrack (doubletrack for the last 1/4 mile before reaching Sherwin Creek Rd)
- Access: Since this is described as a shuttle, you’ll need to leave one car by the lower trailhead. From town, go south on Old Mammoth Rd. Just past Mammoth Creek Park, make a left on Sherwin Creek Rd. Drive for 1/2 mile and park off to the right by the propane tanks / dog walking area (right before it turns into a dirt road). Leave one car here. Head back to Old Mammoth Rd and go left towards Old Mammoth. You’ll go past Snowcreek Athletic Club approx. 1.5 miles. After a steep curve to the left, you’ll see a dirt parking area and the trailhead sign on the left. Park here.
- Length: 2.6 miles (one way)
- Approx. Time: 15-30 minutes (downhill only)
- Lowest Elevation: 7,870′
- Highest Elevation: 8,526′
- Total Elevation Gain: 281′
- Bike Recommendation: Full-Suspension MTB is best, but hardtail will work as well, or a Fat Bike too
- GPX File: Available by contacting us
- Interactive Trail Map and More Info: Visit MammothTrails.org
- Link to Strava Segment
Turn By Turn (in miles):
No turn by turn directions for this ride, as it’s only one singletrack trail with no intersections except for one “Y” at the bottom where you stay to the right (even if you go left at the “Y” you’ll still wind up at your car). Once you hit Sherwin Creek Rd, go left to reach your car at the lower parking area.
Looking for a quick cardio workout that’s easy to access? Here ya go. A one mile sustained climb, takes you up to Lake Mary Rd., where unfortunately you have to turn back. Lake Mary Rd is groomed, so off limits to fat bikes. Hopefully in the future, we’ll be able to link this ride with much more terrain. However, for now, catch your breath, admire the views, and enjoy the fun descent back to your car.
- Ride Type: Out and Back
- Difficulty: Moderate (one strenuous climb)
- Terrain/Conditions: 100% snow, firm OSV packed, softening up from the sun
- Time since last snowfall: More than one week
- Month & Ride Start Time: February, 1:15pm
- Temperature: 50 degrees
- Access: From town, take Old Mammoth Rd. until the road closure and snow is not cleared anymore (near the intersectoin of La Verne St.) Park off to the side.
- Length: 1.9 miles
- Approx. Time: 1/2 hour – 45 minutes
- Lowest Elevation: 7,845′
- Highest Elevation: 8,360′
- Total Elevation Gain: 385′
- Bike Recommendation: Fat Bike
There really is no “warmup” on this ride. You start pedaling off the get go. About a 1/4 mile in, you turn left and the pitch increases as you reach the “Mammoth Rock Trail” trailhead (one of the best dirt singletrack mtb trails in the summer). Depending on how much snowshoe traffic it’s seen, you might be able to ride out on it a little bit, and catch some amazing views of town, Snowcreek, The White Mountains, The Sherwins, and Mammoth Rock. Once you get back on Old Mammoth Rd, keep climbing!! There’s a big switchback (you’ll see the sign for the Panorama Dome Trail– another great summer mtb ride- both this and Mammoth Rock Trail are a part of the Mammoth Lakes Big Friggin Loop) before it straightens out again, and the pitch mellows for the final climb to Lake Mary Rd.
*Note: Sometimes the snowmobiles carve a direct, steeper path cutting off the big switchback as well as another trail staying on the road. Usually it’s best to stay on the road climbing up, but come down the direct route, cutting off the switchback on the descent. It’s a little more fun.
This route is frequented by snowmobiles (thanks for packing it down), snowshoers, hikers, and nordic skiers. So, please be on your best behavior, and yield to everybody. You can link this ride with The Meadows Ride to get some more mileage. You’ll just have to ride all the way up Old Mammoth Rd. on pavement, which is kind of a bummer.