10,462 ft / 3,188 m


5,229 ft / 1,593 m




110 summits

Top climbing months

August   25%

July   25%

September  21%

Most climbed route

Lassen Peak Trail

Class 1 • 2,196 ft / 669 m gain


  • Lassen Peak is the southernmost active volcano in the Cascade Range.
  • Lassen rises 2,000 feet above the surrounding terrain and has a volume of half a cubic mile, making it one of the largest lava domes on Earth.
  • Lassen Peak has the distinction of being the only volcano in the Cascades other than Mount St. Helens to erupt during the 20th century.
  • On May 22, 1915, a powerful explosive eruption at Lassen Peak devastated nearby areas and rained volcanic ash as far away as 200 miles east.
  • Unlike most lava domes, Lassen Peak is topped by craters.
  • Lassen Peak has the highest known winter snowfall amounts in California, with annual snowfalls reaching more than 1,000 inches in some years at its base at "Lake Helen".
  • A well-maintained class 1 route leads to the summit from Lake Helen.
  • Lassen Peak is the highest point in Lassen Volcanic National Park
"Did the peak as the first stop of an overall backpacking trip in Lassen. It's a short enough trail that you can hit the peak early morning and then explore the park more (or hit more peaks if desired). There was a little bit of snow late June, but didn't require crampons...hiking boots worked just fine. Just take it slow as it is slippery." - colleenmarie512, Jun 29, 2018
"I climbed Lassen 2 days after Shasta, being in the region and still having a strong appetite for snow climbing. I had intended to climb the NE face, but after seeing what appeared to be some recent wet slides in the gullies I chickened out and climb the more mellow, but still totally awesome North Ridge. It had rained the night before and the snow didn't completely re-freeze overnight, so it was a little slushy but firm enough to allow me up to the crater rim. I had no beta on this route, so I was pleased to find that the traverse from the north to the higher south summit was class 2. I finish" - klotito, May 24, 2018
"In an attempt to escape the wildfires in Oregon, took advantage of a National Park free day and drove down to Lassen NP. Bagged prospect peak and cinder cone in the early afternoon, then drove up to Lassen Peak TH. Arrived around 5pm and the temps were just perfect. Light wind. Despite the warnings at the parking lot and trial sign of snow and the need for cramps and ax I left in just my sneakers. Thankfully the first people I passed told me that the trail was snow free and it was an quick hike up. This trail is crazy with switchbacks. I counted twenty on the sign going up but eclipsed that nu" - oregon-mt-goat, Aug 25, 2017
"Long weekend fly down and bag Shasta and Lassen on skis. Started in the bluebird morning, empty parking lot at -5C. Sun appeared over horizon minutes later and it was 14C shortly after. Such a beautiful peak and awesome north ridge to ascend to false summit past some steaming holes. Scramble over to true summit and clouds were coming but warm and no wind. 1000m descent off summit and skiied right to parking lot. I'll do that one again. 4 hrs up. 1 hr down. 24C in the parking lot." - alexjoseph, May 15, 2017
"This was a quick side trip after summiting Mt Shasta since I was in the area. I kind of expected more after what I've heard about Lassen. But non-the-less this is a great mountain for ski descents regardless of it's lack of technical alpine ascent routes. The mountain itself is a beautiful volcanic plug. Snow in this area seems to keep/stay longer than elsewhere in the region. Anyway - did a quick ascent of the northeast face. Nothing spectacular to report. " - DrBoz, Jun 14, 2014



Nearest peaks