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About Mountain Transit
Mountain Transit provides Fixed Route, Off-the-Mountain (OTM), and Premium Service throughout the rural San Bernardino Mountain communities of the Big Bear Valley, Crestline, Lake Arrowhead, and Running Springs.
Mountain Transit services are managed by Mountain Area Regional Transit Authority, a rural transit agency that was formed December of 1993 under a joint powers authority between the City of Big Bear Lake and San Bernardino County.
Alerts
Alerts
Mountain Transit Martin Luther King Holiday Schedule January 19, 2026
Effective Date: 01/07/2026 - 01/19/2026
Affected Route(s):
- Big Bear Red Line
- RIM OTM Route 6
- RIM Route 2
- RIM Route 4
- Big Bear OTM Route 5
- Big Bear Gold Line
- Big Bear Blue Line
Mountain Transit Martin Luther King Holiday Schedule January 19, 2026
Effective Date: 01/07/2026
Affected Route(s):
- Big Bear Red Line
- RIM OTM Route 6
- RIM Route 2
- RIM Route 4
- Big Bear OTM Route 5
- Big Bear Gold Line
- Big Bear Blue Line
In observance of the Martin Luther King Holiday – Monday January 19th, 2026
Mountain Transit will operate as follows:
The Mountain Transit Office and dispatch will be closed.
BIG BEAR Service: Operating Hours 6:00AM – 9:48PM runs Hourly
(Big Bear Route 5 does not run on holidays)
RIM Service: Will operate on Sunday schedule from 9:05AM – 5:10PM
(Rim Route 6 and Route 4 do not run on holidays)
Check our website and Facebook for updates to service. Use the new Mountain Transit app to see your bus approaching the bus stops in real time.
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News and Events
Check here for the latest in Mountain Transit News and Events.
Updates on Routes, Community Events, Job Opportunities, and Emergency Alerts.

Public Announcement: Surplus Inventory for Sale

Celebrate Rural Transit Day, July 16!

NOTICE OF PUBLIC HEARING — June 18, 2025 at 10:30 AM
Mountain Transit Martin Luther King Holiday Schedule January 19, 2026
Effective Date : 01/07/2026
Affected Route :
- Big Bear Red Line
- RIM OTM Route 6
- RIM Route 2
- RIM Route 4
- Big Bear OTM Route 5
- Big Bear Gold Line
- Big Bear Blue Line
In observance of the Martin Luther King Holiday – Monday January 19th, 2026
Mountain Transit will operate as follows:
The Mountain Transit Office and dispatch will be closed.
BIG BEAR Service: Operating Hours 6:00AM – 9:48PM runs Hourly
(Big Bear Route 5 does not run on holidays)
RIM Service: Will operate on Sunday schedule from 9:05AM – 5:10PM
(Rim Route 6 and Route 4 do not run on holidays)
Check our website and Facebook for updates to service. Use the new Mountain Transit app to see your bus approaching the bus stops in real time.

