View data as of
Roller Coaster (Upper)
CA
Historical data for the Roller Coaster (Upper) trail at Mammoth Mountain.
Status Timeline
Current Season
Snowfall(25 days)
Closed(3)
Groomed(3)
Recent Changes
Feb 20, 2026, 12:30 PMLatest
Closed→Groomed
Feb 17, 2026, 05:00 PM
Groomed→Closed
Dec 5, 2025, 12:30 PM
Closed→Groomed
Dec 1, 2025, 08:00 AM
Groomed→Closed
Nov 23, 2025, 01:00 PM
Closed→Groomed
Nov 7, 2025, 01:31 PM
Closed
Statistics
Trail Season Length116 days
Number of Days in Each State
Closed
23 daysOpen
0 daysHold
0 daysGroomed
109 daysUnknown
0 days