Runs at Arapahoe Basin
156 runs · 14 glades
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- Not on the trail map
not drawn yet
not drawn yet - Extreme terrain2nd Alley
780 ft · 460 ft drop
Extreme terrain780 ft · 460 ft drop - Extreme terrain3rd Alley
1,050 ft · 650 ft drop
Extreme terrain1,050 ft · 650 ft drop - Extreme terrain4th ALLEY
1,180 ft · 670 ft drop
Extreme terrain1,180 ft · 670 ft drop - Extreme terrain13 Cornices
680 ft · 320 ft drop
Extreme terrain680 ft · 320 ft drop - Most difficultAlex
1,330 ft · 570 ft drop
Most difficult1,330 ft · 570 ft drop - Most difficult
not drawn yet
Most difficultnot drawn yet - Bald Spot
340 ft drop
340 ft drop
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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.
Names and difficulty: Arapahoe Basin — Snow Report, Terrain & Lift Status (arapahoebasin.com, read Sep 30, 2026); Arapahoe Basin — winter trail map (PDF, 2025) (arapahoebasin.com, 2025-26 map, read Sep 30, 2026); Arapahoe Basin — winter trail map (2025), second blind read (grid offset half a tile, 1.4x) (arapahoebasin.com, 2025-26 map, read Sep 30, 2026). A run only the status list names, not the trail map, says so.
Lines, lengths and verticals where a run is drawn: © OpenStreetMap contributors, ODbL, via OpenSkiMap (Sep 28, 2026); measured by Aurora 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 Aurora around its line, edges approximate.