2 miles
755 ft
-909 ft
1 miles
High Point
Trail Supporters, Builders & Maintainers of Deerfield #40 / Lake Loop #40L Trail


  • Riding Area
    Deerfield Lake Region
    Hill City, South Dakota
  • Difficulty Rating
  • Trail Type
  • Global Ranking

Leaving the Custer Trail Trail Head and heading East the trail is easy to follow and largely out in the open. This section of trail has several good views of the lake. There are several uphill and downhill sections of this trail that are moderately steep where the trail is fairly deep due to erosion. After traveling uphill a ways into a large open area the trail turns north and passes through a gated fence. The trail continues to parallel the lake northward and makes its way up and down several hills that are fairly steep and have water bars. The trail again turns east and crosses a minor inlet before turning south and paralleling the lake a very short way from the edge of the water, a few feet in some cases. This short section heading south along the waters edge is rocky and fairly technical, possibly the most technical section of the entire 40L trail. The trail then turns northeast, away from the water. You will pass through another gated fence and continue up and to the right, ignoring several moderately worn paths. Once on top of the open area you will find yourself headed east toward another gated fence. After passing through that gate the trail will turn northeast again, along the fence line. The trail will shortly turn to the east again away from the fence and then toward the south. While riding downhill here keep a look out, at a certain point there is an excellent view of the spillway. This part of the trail flows well and is only mildly technical, but final hill dropping down to the gravel Dutchman Road is quite steep.

Local Trail Association
More Stats for Deerfield Trail #40 / Lake Loop Trail #40L bike trail
  • Altitude change
    -156 ft
  • Altitude min
    5,840 ft
  • Altitude start
    5,996 ft
  • Altitude end
    5,840 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    2,510 ft
  • Distance down
    3,639 ft
  • Distance flat
    3,939 ft
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Layers winter
Trail Style
  • ?
Activity Type
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Directions to deerfield-trail-40--lake-loop-trail-40l trailhead (44.026488, -103.797445)
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