Ridge Lakes Trail

Overview

Ridge Lakes is the classic short-but-steep Lassen sampler: roughly 2.0 miles round trip, out-and-back, climbing about 1,000 feet to a pair of brilliant, turquoise lakes tucked between Brokeoff Mountain and Mount Diller. The payoff-to-effort ratio is excellent—alpine vibes, big views, and quiet water—if you don’t mind a sustained grade at high elevation.

What You’ll See

From the start near Sulphur Works, you’ll glimpse the park’s volcanic heart—bubbling mud pots and steaming vents—before the trail surges uphill. The route switchbacks through ferns and grasses with seasonal wildflowers like mule’s ears, paintbrush, and lupine, then follows a ravine into the compact lake basin. Look back for views toward Sulphur Works below and out to Brokeoff Mountain and the southern reaches of the park. The two Ridge Lakes sit in a small bowl; early in the season they can appear joined, separating later in summer. It’s a perfect spot for a picnic and a long gaze at the water.

Trail Facts and Feel

• Distance: 2.0 miles total (out-and-back)
• Elevation gain: about 1,000 feet
• High point: ~8,000 feet
• Difficulty: Strenuous for the distance—steep grade plus altitude

Expect the grade to kick immediately and steepen near the end. Trekking poles help both up and down, and sturdy shoes matter on the loose bits.

Trailhead, Access, and Amenities

Start at Sulphur Works on the park road, about 1.1 miles past the southwest entrance. The signed trailhead is by the restrooms on the north side of the parking area. There’s a toilet at the trailhead, and the Kohm Yah‑mah‑nee Visitor Center is just south on the road for water and food.

Best Times to Hike

July through early October is the sweet spot: snow is typically gone, the trail is dry, and wildflowers linger into mid-summer. Early in the season (often May–June), expect lingering snow and icy, steep sections; traction and poles may be necessary, and the lakes can be partly frozen. For photography, mid-to-late afternoon throws warm light onto the basin and water; sunset can be gorgeous if you bring a headlamp for the descent. Weekdays see fewer hikers than marquee spots like Bumpass Hell or Lassen Peak.

Tips and Options

• Pace yourself; you’ll gain 1,000 feet fast at high elevation. Bring more water than you think you need.
• The hydrothermal features near the trailhead are hot and fragile—watch children and stay on boardwalks and established paths.
• No dogs on this trail. Overnight trips require a permit. Bears are active—store food properly if you linger or camp nearby.
• Strong hikers can continue beyond the lakes on a short, off-trail climb to the gap between Brokeoff Peak and Mount Diller for bigger views (roughly another 300 feet in 0.3 miles)—only if you’re comfortable with cross‑country travel.