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St. Anton (Upper)

CA

Historical data for the St. Anton (Upper) trail at Mammoth Mountain.

Current Status

Closed

Difficulty

Blue

Section

Main Lodge

Status Timeline

Current Season

11/20/20256/7/2026
Snowfall(34 days)
Closed(5)
Open(1)
Groomed(4)

Recent Changes

Jun 7, 2026, 02:31 PMLatest
Open→Closed
Apr 23, 2026, 12:56 AM
Groomed→Open
Apr 13, 2026, 02:31 PM
Closed→Groomed
Apr 12, 2026, 11:31 AM
Groomed→Closed
Feb 21, 2026, 11:30 AM
Closed→Groomed
Feb 16, 2026, 04:30 PM
Groomed→Closed
Jan 7, 2026, 10:30 AM
Closed→Groomed
Jan 5, 2026, 04:00 PM
Groomed→Closed
Nov 20, 2025, 08:00 AM
Closed→Groomed
Nov 7, 2025, 01:31 PM
Closed

Statistics

Trail Season Length199 days

Number of Days in Each State

Closed
93 days
Open
46 days
Hold
0 days
Groomed
146 days
Unknown
68 days