Elk Meadows is rated as a Beginner Trail and can be accessed from Lewis Ridge Rd. Bergen Peak is considered Intermediate/Advanced, with almost 1400 ft of climbing, rocks, tight switchbacks, loose scree and TONS of fun! Expect to get off your bike and walk some sections, or have fun with the trail and session the parts you have difficulty with. This part of the trail can be accessed either from Lewis Ridge Rd or higher up off of Stagecoach Blvd at the Stagecoach trailhead. Many of us prefer to start at the lower lot as a warm up.
Park trail map: http://jeffco.us/parks/parks-and-trails/elk-meadow-park/
Directions to the Lewis Ridge Rd. lot. I-70W to the Evergreen/CO Hwy 74 exit #252. Go approximately 5 miles to Lewis Ridge Rd. (Turn right at light and then right into the parking lot). http://mapq.st/y3zcoW
Directions to the Stagecoach trailhead. Drive past the Lewis Ridge Rd turn off to the Next light. That will be Stagecoach Blvd. Turn right and drive about 1 mile to lot on right. http://mapq.st/ykZl6g