Mammoth Bike Park MTB Guide: Kamikaze, Off the Top & Sierra Lift Laps

High in California's Sierra Nevada, Mammoth Mountain Bike Park stacks 3,100 vertical feet of volcanic singletrack over a sub-alpine summer that runs roughly late May to early October — and still rides the trail that started American downhill racing.

By the IMPT Travel desk · Published 2026-05-30

From the 11,059-foot summit of Mammoth Mountain, the original Kamikaze line drops dead-straight down a wide volcanic access road for roughly 3.3 miles, losing more than 2,000 feet of altitude in under five minutes for the fastest riders. The dust is fine and red, the gradient never relents, and racers on the historic course routinely hit 58 to 65 mph. It is the line that effectively invented American downhill mountain biking — and it still defines what Mammoth Bike Park is for.

The Kamikaze and Mammoth's place in MTB history

The first Kamikaze Downhill ran in 1985 as part of the NORBA Nationals, widely credited as the first true downhill mountain bike race in the United States. Co-named by Hall of Fame organiser Bill Cockroft, it grew through the 1990s into a 3,000-rider entry event before winding down in 2001. The Kamikaze Bike Games revival, which spent recent seasons running Pro GRT downhill, enduro and the MegaKazi alongside the original line, has now been retired. The trail itself, however, is still part of the lift-served park and remains open to any rider with the nerve and the lungs to cope with thin Sierra air at altitude.

Park structure: lifts, trails, terrain

The park advertises 80+ miles of singletrack across roughly 53 to 68 named trails, depending on the count, with about 3,100 vertical feet of lift-served descent from the top of the resort to the valley floor near Main Lodge. Access is built around the Panorama Gondola from Main Lodge up to the summit, with chairlifts including Chair 1 and the new-for-2026 Roller Coaster Express serving the mid-mountain trail pods more directly than before.

Signature lines include:

• Off the Top (blue) — a near-15-mile flowing descent when linked with Beach Cruiser and Downtown, dropping the full 3,000 feet from the summit ridge.
• Kamikaze (black) — the original fireroad DH, fast and exposed.
• Flow (black/expert) — high bridges, banked paver turns, tabletop jumps and the famous Flow Drop.
• Pipeline (black) — a classic jump line being re-shaped for 2026 to widen its skill range without losing the rhythm.
• Velociraptor, Bullet, Brake Through, Shotgun, Skid Marks — black and double-black descents through volcanic ash and pumice rollers.
• Discovery Zone (green) — the beginner pod, with skills features and gentler grades.

For 2026 the park is also opening Upper Flow, a new intermediate-to-expert progression link feeding the Flow Drop, part of a wider master-plan rebuild aimed at modern flow and progression rather than legacy fall-line gnar.

Season window and altitude

Mammoth Bike Park targets a season opening on 22 May 2026, conditions permitting, and typically runs lifts through the first weekend of October. Because the summit sits above 11,000 feet, snow lingers late: in heavier winters the upper lifts can stay closed into July. Mid-July through mid-September is the most reliable window for full top-to-bottom riding, with September delivering quieter trails, cooler temperatures and the cleanest dust. Afternoon thunderstorms are common in July and August — morning laps are the smart play.

Getting there sustainably

Mammoth Lakes does have its own airport (MMH), with United operating seasonal direct flights from LAX, SFO and Denver. The lower-impact route is overland from Reno-Tahoe (RNO), roughly 165 miles north, or via the Eastern Sierra Transit Authority (ESTA) bus, which runs between Reno, Lone Pine, Lancaster and Mammoth Lakes year-round and connects through to Los Angeles via Lancaster Metrolink. In summer the YARTS regional bus links Mammoth Lakes to Yosemite Valley and Tuolumne Meadows over the 9,943-foot Tioga Pass, with daily service in July and August and weekend-only service in June and September. There is no passenger rail to the eastern Sierra; the closest Amtrak connections are at Reno or Bakersfield, both onward bus transfers.

Where to stay

The town of Mammoth Lakes sits about four miles from Main Lodge and is connected by the free year-round town trolley and bike-park shuttle. Lodging clusters in three zones: The Village at Mammoth (walkable bars, restaurants and the gondola link), Old Mammoth Road (quieter condos, easier parking, supermarket access) and the Mammoth Mountain Inn directly at Main Lodge, which puts the gondola queue 90 seconds from the door. Riders prioritising shuttle-free laps tend to favour the Inn; riders prioritising food, post-ride beers and rest-day variety tend to base in the Village.

Rider rating

Mammoth rewards confident intermediates who can handle high-speed loose-over-hardpack and altitude, and it gives experts plenty of black and double-black terrain on Flow, Velociraptor and Skid Marks. Absolute beginners are well served by the Discovery Zone but the wider park is not the gentlest first-timer destination in California — the dirt is fast and the consequences are real. The reward is a uniquely American piece of MTB history, ridden at altitude, under enormous Sierra skies.

Race-pace POV of the Kamikaze Downhill, the dead-straight fireroad that hosted the first NORBA DH in 1985 and still routinely sees 58-65 mph speeds.