Rim Nordic Ski Area, located in San Bernardino Mountains, is the only cross country ski area in Southern Calif. with machined groomed trails.  Open daily when winter arrives from 9-4pm. We are proud to offer mountain bike riding on the Rim Nordic Bike Park trail system in the summer on weekends only starting Memorial Day through Labor Day,  including some great single track trails.  Other events included mountain bike racing & trail runs.  (closed courses without off road vehicles).