by Rick F » Tue Mar 10, 2009 6:57 pm
Hiking it first without a bike is a very good suggestion.
I would never even consider taking a bike on the Tram. I'm reasonably certain the Tram operators would not let a bike get near the entrance. I don't believe bikes are allowed in State or National Parks and If I'm not mistaken the top Tram station is in a State Park. The general rule is that no mechanical devices are allowed in State or National Parks (unless on designated roads or highways) That's why I'm doing the research to find out where the boundaries are and how far up the Skyline trail bikes would be allowed. My objective for this type of trip in the past has been to bike/hike up as far as possible on bike friendly terrain then stash the bike and hike to the summit, descending back to the stashed bike for a fun and quick finish. I look at it like carrying my skis to the top when there's snow and then enjoying a nice ski-ride descent. The difference is that better skiing terrain is usually near the top where the snow is, better biking terrain is usually near the bottom where the wider, gentler single track is.
I also would not take a bike on a trail that is crowded with hikers. From what I have read, the Skyline trail is usually not very crowded. If nobody wants bikes on Skyline then nobody will take bikes on Skyline, right? I'll keep researching this to find out if bikes are prohibited on this trail. If bikes are not allowed I'll respect the rules.
Just some quick numbers on the vertical gain & the distance indicate that it may not be a good candidate for a ride. Assuming I could take a bike up most of the way to the tram station, about an 8,000 foot gain in 12 miles. That's about a 667 feet/mile average gradient. The steepest average gradients I've ridden down are Holy Jim Trail in the Santa Ana Mountains and Armstrong Pass south of Tahoe. These rides had lower average gradients, closer to 500 feet per mile. Although bikes are not allowed on the Vivian Creek Trail to San Gorgonio, it does provide a good comparison for the "steepness". Vivian Creek has about 5,420 feet of gain/loss in 8 miles, which is similar to Skyline at about 678 feet per mile.
All good food for thought.