34 miles
9,544 ft
-9,544 ft
1 miles
High Point

This ride was done by Bart

Starting and finishing at the same point, this is a perfect loop to get your legs and lungs for base mileage, and to prepare you for even more demanding rides later in the season. After a brief paved road section you'll be climbing Monroe Truck trail, then make a left on Rincon Red box that will take you to Mt. Wilson Observatory and the beginning of Mt. Wilson Shuttle Ride!

Local Trail Association
Mount Wilson Bicycling Association (mwba.org)
Please consider joining or donating to the local riding association to support trail development & maintenance.
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  • Riding area
  • Difficulty rating
    Black Diamond
  • Route Type
  • Bike type
  • Direction
    One Direction
  • Physical rating
More Stats for Monrovia Truck Trai- Firebird-Mt Wilson mountain bike route
  • Altitude min
    503 ft
  • Altitude start
    934 ft
  • Altitude end
    934 ft
  • Grade max
  • Grade min
  • Distance climb
    18 miles
  • Distance down
    15 miles
  • Distance flat
    1 miles
no votes yet
Layers winter
Trail Style
  • ?
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Trail transparency
#POLAROIDXS80 Jpl 2014—15 top half with some...
#POLAROIDXS80 Jpl 2014—15 top half with some PB riders and L. A. Crew part 1
20:48 | 113 | comments: 1 | favs: 1
Oct 4, 2015
A top half of this spring and a touch of last winter in some cool Fog with my Canadian buds from pinkbike and and another PB buddy on the winter...
Vuvuzela Top Hat Guy
Vuvuzela Top Hat Guy
0:28 | 715 | comments: 4 | favs: 7
Oct 17, 2015
Yes. You read the title correctly. I will never have a better drop in.

Recent Trail Reports Along Route

Rim Trail
Aug 20, 2018 @ 11:50am
Aug 20, 2018
The top section from the observatory is stupidly loose and soft, like riding in sand. I don't know about the rest - rode the first few hundred meters before abandoning and riding Sturtevant. Avoid.
more reports »
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