more stats
1,079 ft
Distance
4 ft
Climb
-303 ft
Descent
00:02:18
Avg time
-299 ft
Altitude change
698 ft
Altitude min
997 ft
Altitude max
997 ft
Altitude start
699 ft
Altitude end
-27.7%
Grade
-68.9%
Grade max
9%
Grade min
43 ft
Distance climb
948 ft
Distance down
89 ft
Distance flat
00:02:18
Avg time

Convolution Extension Details

  • Activities
    • Mountain Bike
  • Riding Area
    Marsden Valley
    Nelson
  • Difficulty Rating
    Black Diamond Rate
  • Local Popularity
    5 in Mountain Biking
  • Global Ranking
    #344693 in Mountain Biking
  • National Ranking
    #4,875 in Mountain Biking · New Zealand
  • Trail Type
    Singletrack
  • Bike Type
    DH
  • Physical Rating
    Hard
  • Trail Visibility
    Always easy to follow

No community description for Convolution Extension trail has been added yet!

AI Generated Description

Convolution Extension is a 329 m less popular black diamond difficulty singletrack trail located near Nelson. This mountain bike only trail and has a hard overall physical rating. Trail visibility is always easy to follow. On average it takes 2 minutes to complete this trail.

This trail is unsanctioned.

Tags

Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 0 rides
  •  
All
  • 8 rides
  • Last: Oct 8, 2021
c1c2c3c4
January
February
March
April
May
June
July
August
September
October
November
December
update trails status or condition

Convolution... Trail Reports

statusdatedescription
May 24, 2026 @ 9:47am (Pacific/Auckland)
May 23, 2026
Trail has been destroyed for the past 2 years. Does not exist anymore.
May 11, 2025 @ 1:43pm
May 11, 2025
 reporter Closed for annual Cull. Open weekend 17/18 May
Jun 21, 2024 @ 4:21am
Jun 21, 2024
Open again
May 5, 2024 @ 4:10pm
May 5, 2024
 reporter Closed weekdays until 18/05 for annul cull
Jun 26, 2022 @ 12:26am
Jun 26, 2022
 This trail looks to have been destroyed during recent logging operations. The upper Convolution track should still be there except the last 100m...
more »
Status:
on May 24, 2026
no votes yet
Your vote: 0

view (128)
close
      Directions to convolution-extension-290748 trailhead (-41.331170, 173.262600)
      View on Discover Map

      Photos

      1 more »
      mtb
      76 |
      Jan 11, 2021 @ 9:10pm
      Jan 11, 2021

      Videos

      no videos have been added for Convolution Extension yet, add a video.

      1 Review & Comments

      TGoodman
      Harder than the upper convolution trail some steep rutty bits still through the pines but good fun

      We hope you've been enjoying Trailforks!

      Create a FREE account to view all trail reviews and much more.

      Create a Free Account

      Nearby Trails

      Marsden Valley

      • #290748 - 1,270 views

      Frequently Asked Questions

      ▼ Where is Convolution Extension located?
      Convolution Extension is located in Marsden Valley, Nelson, New Zealand. It is part of the Marsden Valley trail network. The trailhead is located at coordinates -41.33117, 173.2626.
      ▼ How hard is Convolution Extension?
      Convolution Extension is rated as Black Diamond difficulty. The physical rating is Hard. The average grade is 27.7%.
      ▼ What is the elevation gain for Convolution Extension?
      Convolution Extension has 4 ft of elevation gain. The trail has 303 ft of elevation descent. The elevation ranges from 698 ft to 997 ft.
      ▼ How long is Convolution Extension?
      Convolution Extension is 1,079 ft long. The trail type is singletrack.
      ▼ Are dogs allowed on Convolution Extension?
      There is no information about dogs being allowed on Convolution Extension. Check with local trail managers or the trail page for the latest access rules.
      ▼ How do I access Convolution Extension? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Convolution Extension are: View all parking locations in the area.
      ▼ How long does it take to ride Convolution Extension?
      Based on recorded activities, it takes an average of 2 minutes to ride Convolution Extension. The trail is 1,079 ft long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Convolution Extension?
      Convolution Extension is a less popular trail with lighter traffic. There have been 153 recorded activities on this trail. The trail has received 128 check-ins. View recent activity on this trail.

      Hit the Trail

      Open in App

      Get this trail on your phone instantly.
      open trail in app

      Download Trail

      Save to wishlist, Garmin & download.
      save the trail

      Find Related Routes

      Find routes and users activities that include this trail.
      find routes for this trail

      You must enter a description before submitting.