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Navigating your adventure
As you plan your trip, check the CalTrans website and bookmark our Winter Road Closures page.
When it comes to parking, be prepared for less of it. Although there are less spaces to park, refrain from parking in the roadway. You can get cited or impede emergency traffic.
When it comes to maps, our "Eastern Sierra Winter Recreation Map" is a must-have! Download ahead of time, or get the Avenza app (Apple Store or Google Play) where you can navigate without the need for cell service.
Trail Grooming Updates
The grooming team is no longer in operation as of April 17, 2023 due to lack of snow and cold temperatures.
Last trails groomed:
- 4/7: A to L junction, B, G between H and A, H, K, L
- 4/4: A, D, G, I, Obsidian Nordic Ski
- 4/3: A (to I connector), B, C, G I ( between A and D), K, L
- 3/31: A to US 395, B, C, G to June Lake Junction, I east of US 395, Obsidian Nordic Ski
- 3/30: A, B, D, I (D-A connector), L, K
- LEAVE NO TRACE. Pack out your trash.
- Yield right of way:
- Snowmobiles yield to all.
- Bikes, snowshoers yield to skiers.
- All users yield to grooming machines.
- Always stay on the right-hand side.
- Slow zone areas are 15 mph.
- Leash dogs when in Town of Mammoth Lakes city limits. Remove all dog waste on and off trails.
- Use extreme caution at night - be visible and use bright lights.
- Winter Fat Bikes are allowed on all groomed trails outside ski areas.
- E-bikes are not allowed on any non-motorized trails or Nordic Recreation Areas (Shady Rest, Obsidian Dome, Tamarack).
- Crossing two-lane plowed roads at right angles is permitted.
- Crossing four-lane plowed roads is prohibited unless otherwise posted.
- Snowmobiles must display a current state registration sticker.
- Rockslides and avalanches happen throughout the winter. Check the Eastern Sierra Avalanche Center often for the latest conditions, and learn how you can mitigate avalanche risk and get proper training.
- Safe and proper use of winter gear such as ice axe and/or crampons is a matter of one's own blend of skills, experience and comfort zone.
- Wilderness permits are still required.
- Conditions can change rapidly depending on weather and time of day, and you are responsible for evaluating and determining If weather and conditions permit safe travel for yourself.