1,696 ft
7 ft
-81 ft
390 ft
High Point

Sudden Impact Details

  • Riding area
    Vietnam Trail Network
    Milford, Massachusetts
  • Difficulty rating
  • Trail type
  • Bike type
    AM, XC, Fat
  • Trail Usage
    Biking Primary
  • Direction
    Downhill Primary
  • Climb Difficulty
  • Physical rating
  • Family Friendly
  • eBike Allowed
  • TTFs on trail
    Berm, Rock Garden, Roller Coaster
  • Ride in rain
  • Global Ranking

Sudden impact is one of the nicest new cross country style trails at Vietnam. Fun and flowy with some moderate tech in the form of rock roll-overs, one or two small drop-offs and a short steep section at the end, it is a well defined Singletrack trail suitable for all skills levels, from novice to advanced depending on what speed you go. While it can be ridden in both directions, it is most fun as a down hill trail, starting on Right turn Clyde. Right at the beginning there are two easy rock formations to ride over, on the second rock you turn right, down a small drop-off, towards the fire pit where you turn left. Follow the twisty flowy single track, across the Holliston Highway, past Humpback on the right all the way down to where it joins Forest Town. This trail is a must ride!

Access Info

Sudden Impact has three access points. If you want to ride the whole trail as a down hill, you can access Sudden Impact from about the mid-point of Right turn Clyde. If you want to do it as an easy to moderate climb, you can start it from the bottom end on Forest Town, between Optional Rocks and the Tonto turn-off. Otherwise you can enter the trail about mid-way, where it crosses over Holliston Highway.

Local Trail Association
More Stats for Sudden Impact mountain bike trail
  • Altitude change
    -74 ft
  • Altitude min
    311 ft
  • Altitude start
    385 ft
  • Altitude end
    311 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    241 ft
  • Distance down
    1,306 ft
  • Distance flat
    149 ft
  • view trail stats
on Jun 16, 2018
Avg: 5 (1 votes)

view (160)
Layers winter
Trail Style
  • ?
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Directions to sudden-impact trailhead (42.178080, -71.489560)
update trails status or condition

Sudden Impact Trail Reports

Jun 16, 2018 @ 4:23am
Jun 16, 2018
reporter Sudden Impact is in great shape!
Jun 9, 2018 @ 5:39am
Jun 9, 2018
reporter These trails are all in great shape. Awesome riding!
Apr 28, 2018 @ 6:25pm
Apr 28, 2018
view all reports »


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Routes with this trail

more »
Vietnam for Beginners 2
4 miles
Vietnam Demo Route D
4 miles
Vietnam Demo Route B
3 miles
Vietnam Demo Route A
2 miles

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