28.0 miles
3,061 ft
-3,073 ft
1,085 ft
High Point

This is the 'Fondo' / 'Rumble' ride for Sunday 8th August 2021 as part of the Synergy Collie River MTB Marathon. Racing in Collie on Saturday, and checking out some of the new trails at Wellington National Park on the Sunday.
We were hoping on making this a longer route with more of the new trails being built around the Wellington Dam Kiosk area - but due to the very wet winter these trails are not completed yet. So, the course has been abridged to the 44km we have on this route.

It's a really touch course - close to 1000m of climbing.

Look forwards to seeing you at the event

Detailed Description
2021 Sunday Rumble MTB Synergy Collie River MTB Marathon is a 28 mile intermediate race route located near Bunbury. This mountain bike primary route can be used one direction and has a moderate overall physical rating. This route includes 2 trails. This route climbs 3,061 ft with a max elevation of 1,085 ft then descends -3,073 ft.
Local Trail Association
Local trail association
South West Mountain Bike Club (www.swmtbc.asn.au)
Please consider joining or donating to the local riding association to support trail development & maintenance.
donate to earn trail karma!

11 Reviews & Comments

We hope you've been enjoying Trailforks!

Create a FREE account to view route comments and much more.

Trails in Route


  • Race Course
  • Riding area
  • Primary Activity
    Mountain Bike
  • Other Activities
    • E-Bike
  • Difficulty rating
  • Route Type
  • eBike Allowed
  • Bike type
    AM, XC
  • Direction
    One Direction
  • Physical rating
More Stats for 2021 Sunday Rumble MTB Synergy Collie River MTB Marathon mountain bike route
  • Altitude min
    308 ft
  • Altitude start
    572 ft
  • Altitude end
    561 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    13 miles
  • Distance down
    12 miles
  • Distance flat
    3 miles
no votes yet
Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Partial
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
Trail Flow (Ridden Direction)
Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
  • bi-directional trail
  • no data
Trail Last Ridden
Trailforks scans ridelogs to determine the last time a trail was ridden.
  • < 2 days
  • < 1 week
  • < 2 weeks
  • < 1 month
  • < 6 months
  • > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
Contribute Details
Colors indicate trail is missing specified detail.
  • Description
  • Photos
  • Description & Photos
  • Videos
Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months. Trails are compared with nearby trails in the same city region with a possible 25 colour shades. Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
  • most popular
  • popular
  • less popular
  • not popular
Max Vehicle Width
US Cell Coverage
cell carrier legend

Radar Time
x Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
  • mountain biking recent
  • mountain biking (>6 month)
  • hiking (1 year)
  • moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
  • Downhill Ski
  • Backcountry Ski
  • Nordic Ski
  • Snowmobile
Winter Trails
Warning A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
x Missing Trails
Most Popular
Least Popular
Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
Trails Deemphasized
Trails are shown in grey.
Only show trails with NO bikes.

Save the current map location and zoom level as your default home location whenever this page is loaded.

Trail transparency
WA Wambenger, Van Dam!
WA Wambenger, Van Dam!
3:48 | 220 | comments: 0 | favs:
Jan 6, 2022
Epic 6.5km Downhill Trail! | Grizzly Trail |...
Epic 6.5km Downhill Trail! | Grizzly Trail | Mt Lennard, WA
9:59 | 841 | comments: 0 | favs:
Apr 28, 2020

Recent Trail Reports Along Route

Grizzly Trail
Dec 9, 2023 @ 2:37pm
Dec 9, 2023
Tree down mid trail
Van Dam Green
May 25, 2023 @ 9:38pm
May 25, 2023
more reports »
  • By ridecollie CMTBC & contributors
  • #30843 - 550 views