542 ft
15 ft
-35 ft
Avg time


  • Riding area
    Griffin Bike Park
    Terre Haute, Indiana
  • Difficulty rating
  • Voted Difficulty
    Black Diamond (1 vote)
  • Trail type
  • Bike type
    XC, Fat
  • Trail Usage
    Biking Only
  • Direction
    Downhill Only
  • Climb Difficulty
    Black Diamond
  • Physical rating
  • TTFs on trail
    Berm, Drop
  • Global Ranking
  • Year Opened
  • Land Manager
    Vigo County Department of Parks and Recreation

From the Alpha Trail riders pass under a wooden gantry and make a winding gentle climb to the first (advanced) drop. This steep descent is made even more challenging by loose, sandy soil. At the bottom, those with momentum can ride a berm curving to the right and then continue to the right to re-enter Alpha Trail.

Access Info

This steep drop is accessed from Alpha Trail. Look for the wooden gantry where Alpha makes a turn and descent to the right.

Local Trail Association
More Stats for Proving Grounds Advanced Drop mountain bike trail
  • Altitude change
    -21 ft
  • Altitude min
    632 ft
  • Altitude max
    657 ft
  • Altitude start
    654 ft
  • Altitude end
    632 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    198 ft
  • Distance down
    240 ft
  • Distance flat
    103 ft
  • Avg time
  • Avg reverse time
  • view trail stats
on Sep 14, 2018
Avg: 4.75 (4 votes)

view (328)
Layers winter
Trail Style
  • ?
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Directions to proving-grounds-advanced-drop trailhead (39.338720, -87.365200)
update trails status or condition

Proving Grounds... Trail Reports


no photos have been added for Proving Grounds Advanced Drop yet, add a photo.

1 Review & Comments

  • + 1
flag klaine (Aug 16, 2016 at 12:01)
 These Drops in the "Proving Grounds" are not fully complete... the ravine bottoms are SOFT. Causeways still need to be built to provide a firm transition into the table top on the other side. The surrounding "Alpha" loop is open, but this section needs some work. Worth taking a look down though to see what is in the works!!

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