Mammoth Mountain — stats, terrain, lifts and snowfall

Mountain

How big it is and what the skiing is like, each figure with its U.S. rank.

Lifts: the count the resort advertises; resorts differ on whether surface lifts and carpets are in it.

Terrain · the resort’s own difficulty mix

· · ·

Beginner
Intermediate
Advanced
Expert

· · .

Snow and weather

The National Weather Service forecast for the summit and the base. Live: each figure gives its source and time.

Trail map

Drawn from OpenStreetMap

153 runs · 28 lifts, as mapped in OpenStreetMap

Map key

Your runs

Sign in to tick runs off here and in the list; the ones you’ve skied clear from a haze over the rest.

Seen as a trail map shows a mountain: from the base looking uphill, the ground tilted up (heights ×1.5); the arrow points north and the scale holds across the page. Runs and lifts as OpenStreetMap's contributors have mapped them, on the ground from USGS elevation data, with a stronger contour every 1,000 ft. The key counts the lines OpenStreetMap draws, not the resort's runs (its own list is under Runs). The resort's glades and bowls are drawn as areas: OpenStreetMap's own where it maps one, otherwise drawn by north.ski around OpenStreetMap's line, up to 60 m each side and halfway to the next run or lift, so their edges are approximate.

64 runs on the resort’s list aren’t drawn here yet

On the resort’s list, with no line in OpenStreetMap yet: mapping them there draws them here.

The resort’s published trail map is not yet collected.

Runs

Every run Mammoth Mountain lists, to tick off as you ski them; the trail map above names them and clears the ones you've skied.

169 runs · 6 glades · 11 parks

Mammoth Mountain says 180

The resort’s own list, its trail map leading: every section it lists counts, traverses and roads too; carpets, learning areas, race courses and nordic tracks are left out, and parks are a list of their own.

Sign in to tick off the runs you’ve skied, here and on the trail map.

Agee's Run
Very difficult1,140 ft · 470 ft drop
Very difficult1,140 ft · 470 ft drop
Andy's Double Gold
Very difficult1,510 ft · 540 ft drop
Very difficult1,510 ft · 540 ft drop
Antin Alley / Chickadee
Slightly difficult2,420 ft · 330 ft drop
Slightly difficult2,420 ft · 330 ft drop
Apple Pie
Easiestnot drawn yet
Easiestnot drawn yet
Arriba 2 sections, each on the list0.7 mi · 1,000 ft drop, the whole run as mapped
- Upper
  Difficulton the run’s line
  Difficulton the run’s line
- Lower
  Difficulton the run’s line
  Difficulton the run’s line
Avalanche
Difficult1,020 ft · 310 ft drop
Difficult1,020 ft · 310 ft drop
Avalanche ChutesChute
Extremely difficultnot drawn yet
Extremely difficultnot drawn yet

Terrain parks

11 · a list of their own, outside the run count

Names and difficulty: Mammoth Mountain — Winter Trail Map, interactive map (front side) (mammothmountain.com, read Sep 29, 2026); Mammoth Mountain — Winter Trail Map, interactive map (back side) (mammothmountain.com, read Sep 29, 2026).

Lines, lengths and verticals where a run is drawn: © OpenStreetMap contributors, ODbL, via OpenSkiMap (Sep 28, 2026); measured by north.ski from the mapped line, not the resort’s figures. On the map, glades and bowls are areas: OpenStreetMap’s own where it maps one, else drawn by north.ski around its line, edges approximate.