4,574 ft
157 ft
-109 ft
Avg time

Brain Wave Details

  • Riding area
    Black Diamond Open Space
    Maple Valley, Washington
  • Difficulty rating
  • Trail type
  • Bike type
    AM, XC
  • Trail Usage
    Biking Primary
  • Direction
    Both Directions
  • Climb Difficulty
  • Physical rating
  • eBike Allowed
  • TTFs on trail
  • Ride in rain
  • Global Ranking

Brain Wave offers one of the best flat flow sections in BDOS and one of the more technical intermediate trails in the area. Brain Wave is easily distinguished into two very different sections. The first, from Spooky to Grassy is fast, fun and flowy, and easily just a green circle. After Grassy and all the way to the Sasquatch Extension is a much more technical trail, which is what earns Brain Wave its intermediate status. While the tech isn't anything special, compared to the mellower XC trails offered here, it's something to challenge progressing riders. The trail is most technical on the north side of the Powerline Road near Sasquatch Extension. If you are a beginner, or simply want to avoid the tech of the second half simply turn right on grassy at the intersection and then either continue to the Powerline Road, or turn right again on the other Grassy, which will take you right back to Spooky.

Access Info

Easiest to access off of Spooky, at the first fork in the trail follow the signs for Brain Wave to the left.

Local Trail Association
More Stats for Brain Wave mountain bike trail
  • Altitude change
    48 ft
  • Altitude min
    568 ft
  • Altitude max
    645 ft
  • Altitude start
    582 ft
  • Altitude end
    630 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    2,123 ft
  • Distance down
    2,009 ft
  • Distance flat
    443 ft
  • Avg time
  • Avg reverse time
  • view trail stats
on Oct 2, 2018
Avg: 3.5 (2 votes)

view (291)
Layers winter
Trail Style
  • ?
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Directions to brain-wave trailhead (47.343370, -122.012900)
update trails status or condition

Brain Wave Trail Reports


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Routes with this trail

All Diamonds
15 miles
Griffins at Black Diamond 2018
5 miles

1 Review & Comments

  • + 1
flag KeetnaWilson (May 5, 2018 at 15:27)
 If there's any beginners out there, this trail is easily a Green Circle from the intersection with Grassy to the intersection with Spooky.

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