Oversnow Route Conditions

Season for Winter/Spring Oversnow Routes: November - May

This Oversnow Route Conditions page is updated from November - May.

If looking for hiking conditions during the months of June - October, please refer to the Summer Trail Conditions page, which gives ideas for hiking in summer and fall. Hiking trails can remain snow-covered into June and sometimes July. Trails are not cleared of winter snow accumulation. Trails melt out naturally.


Snow-covered roads and trails in the park are considered winter routes and require snowshoes or skis to enjoy safely. View maps and details of winter routes in the Southwest Area or Manzanita Lake Area. When selecting a route, please consider:

  • All trails in the park are covered with snow from approximately November -April/May each year. The park does not clear snow on hiking trails.
  • There are no groomed ski routes in the park.
  • Many oversnow routes do not follow summer trails exactly; some summer trails are not recommended as oversnow routes.
  • Pets are not permitted on snow-covered routes or on the snow-covered park road. Leashed pets are permitted in parking areas. They are also permitted on the plowed park road, once it is free of snow.
  • Spring snow clearing operations affects portions of the highway route. Visitors can walk or bike sections of the highway once they are cleared of snow and before they are open to vehicles.
  • Oversnow travel involves risk. Learn more about winter safety including avalanche safety, recreating in a remote area, and route selection.
  • Bumpass Hell Trail is closed thorughout the snowy season. Remote location, steep drop-offs, cornices, difficult access, avalanche terrain, hidden hazards beneath the snow make this trail unsitable for oversnow travel. This trail typically opens for hiking in June or July.
 

Refresh Page to View Current Data

Press to refresh/reload this page to ensure that you are viewing the most current data. Many browsers will cache data from web pages you have viewed before, and therefore displaying out-of-date information.

Last updated:1/1/23 - This page is updated once snow falls, typically in November. Thoughout the snow season, it is periodically updated when conditions change, if known. Updates may occur thorugh May. | View current snow depths

Oversnow Route

Miles (RT)

Difficulty

Condition

Southwest Area Winter Routes | Elevations range from 6,700 feet to 10,457 feet

Park Highway Route
(main park road)

Varies

Varies

Road opened to Kohm Yah-mah-nee Visitor Center.
Snowcovered. Snowshoes and/or skis with trekking poles are necessary. Route passes through avalanche terrain.

Road is not open to vehicles beyond Kohm Yah-mah-nee Visitor Center.

Sulphur Works
(via Hwy Route)

2.0

Beginner

Snowcovered. Snow equipments such as snowshoes, skis, or boot spikes with trekking poles are necessary. Those without equipment are at increased risk of postholing and/or slipping over uneven and icy terrain.

This is a popular route.
Please practice winter etiquitte.

Not open to vehicle access. Entire distance from parking to Sulphur Works and return is 2 miles.

Lassen Peak

17.0

Advanced

Depth varies due to wind-blown and/or melted snow. Conditions are always changing due to high elevation and exposure. Snowshoes, ski or boot crampons or ice axe are necessary.

The route passes through avalanche terrain. Be avalanche aware. Avalanche gear is highly recommended.
Protect the Lassen Peak Trail; do not cut switchbacks once trail is visible.

The road to the trailhead is not accessible by vehicle. Entire distance from parking to summit and return is 17 to 20 miles.

Ridge Lakes

2.0

Intermediate

Snowcovered. Snowshoes and/or skis with trekking poles are necessary.

The road to the trailhead is not accessible by vehicle. Entire distance from parking to Ridge Lakes is 4 miles.

Forest Lake

1.2

Intermediate

Snowcovered. Snowshoes or skis with trekking poles are necessary.

Brokeoff Mountain

7.0

Advanced

Snowdepth varies due to wind-blown and melted snow. Conditions are always changing due to high elevation and exposure. Snowshoes, ski or boot crampons or ice axe are necessary. Trekking poles are recommended.

The route passes through avalanche terrain. Be avalanche aware. Avalanche gear is highly recommended.

Bumpass Hell - Closed

NOT A WINTER ROUTE. Trail is closed in winter. This trail is closed every winter/spring until snow is free of snow/ice hazards. Trail typically re-opens in June or July. See trail opening dates from previous years, which are largely affected by snowpack. See summer trail conditions page for more information.

Mill Creek Falls

Trail NOT advised due to difficulty in wayfinding when covered with snow and burn hazards.

McGowan Cross-Country Ski Area
Lassen National Forest

Varies

Varies

Snowcovered. Check website for more information.
Be aware of burn hazards such as standing dead trees.

Manzanita Lake Area Winter Routes | Elevations range from 5,900 feet to 7,200 feet

Park Highway Route
(main park road)

Varies

Intermediate

Snowcovered. Snowshoes and skis with trekking poles are advised.

Reflection Lake Loop

0.5

Beginner

Patchy snow. Snowshoes and trekking poles are advised.

Manzanita Lake Campground Loop

1.8

Beginner

Patchy snow. Snowshoes and trekking poles are advised.

Manzanita Lake Loop

1.8

Beginner

Patchy snow. Snowshoes and trekking poles are advised.
Boat Launch is Closed.

Chaos Crags Route

4.0

Intermediate

Snowcovered. Snowshoes and/or boot spikes are advised. Trekking poles are recommended.

Nobles Emigrant Route

5.2

Intermediate

Patchy snow. Snowshoes or skis are advised. Trekking poles are recommended.

Manzanita Creek

7.5

Intermediate

Snowcovered. Snowshoes or skis are necessary. Trekking poles are recommended.

Butte Lake Area | Elevations range from 6,100 feet to 8,300 feet

Butte Lake Road

6.0

Snowcovered. Snowshoes or skis are necessary. Trekking poles are recommended.

Warner Valley Area | 5,600 feet

Warner Valley Road

6.0

Snowcovered. Snowshoes or skis are necessary. Trekking poles are recommended.
Be aware of burn hazards such as standing dead trees.

Juniper Lake Area | 8,000 feet

Juniper Lake Road

4.0

Snowcovered. Snowshoes or skis are necessary. Trekking poles are recommended.
Be aware of burn hazards such as standing dead trees.

 

Not Recommended for Oversnow Travel

Some summer trails are not recommended for oversnow travel due to hazards including terrain, avalanche danger, and hydrothermal hazards.

  • Mill Creek Falls Trail: Due to hazards created from the Dixie Fire, difficulty navigating with snow on the ground, this trail is not advised in the winter. Sections of the trail cross a steep slope above Mill Creek and are not ideal for oversnow travel. Burned Area Safety - Lassen Volcanic National Park (U.S. National Park Service) (nps.gov)
  • Bumpass Hell Hydrothermal Area: In addition to requiring nearly 7 miles of one-way travel on the highway route, the summer trail traverses steep slopes above Little Hot Springs Valley which is not safe for oversnow travel. Bumpass Hell Trail remains CLOSED until the trail is snow-free due to these snow/ice hazards.

Last updated: January 1, 2023

Park footer

Contact Info

Mailing Address:

PO Box 100
Mineral , CA 96063

Phone:

530 595-4480

Contact Us

Stay Connected