View data as of
School Yard
CA
Historical data for the School Yard trail at Mammoth Mountain.
Status Timeline
Current Season
Snowfall(25 days)
Closed(2)
Groomed(2)
Recent Changes
Feb 18, 2026, 01:00 PMLatest
Closed→Groomed
Feb 17, 2026, 05:00 PM
Groomed→Closed
Dec 5, 2025, 12:30 PM
Closed→Groomed
Nov 7, 2025, 01:31 PM
Closed
Statistics
Trail Season Length104 days
Number of Days in Each State
Closed
29 daysOpen
0 daysHold
0 daysGroomed
103 daysUnknown
0 days