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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 activity logs 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 users are riding a trail in its intended direction.
The colour categories are based on what percentage of users are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Used
Trailforks scans activity logs 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 activity logs 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 activities = more kinetic energy = warmer colors.
- most popular
- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
inches
US Cell Coverage
Legend
Radar Time
Activity Recordings
Trailforks uses anonymized public activity data.
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Activity Recordings
Trailforks uses anonymized public activity data.
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Winter Trails
Warning
A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
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 users jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status
![map legend]()
Service Road Atlas is a free to use, community-driven service for viewing and creating reports on the numerous back-country service roads around B.C. and Alberta.
Slope Aspect
Direction the slope faces
Trails Deemphasized
Trails are shown in grey.
Only show trails with no bike usage.
Suggested Layers
Based on selected activity type
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SaveCrolles trails and routes are listed on Trailforks with interactive trail maps, difficulty ratings, photos, and user-reported trail conditions.
This is an auto-generated description of Crolles.
Login or register to submit a custom description.
This region uses the Uk/Euro style trail grading system.
Trail info last updated
Activities Click to view
- Mountain Bike
5 trails
Region Details
- 4
- 1
Region Status
Caution as of Oct 10, 2026Stats
- Global Ranking
- #16,066
- State Ranking
- #1,321
- Trails (view details)
- 5
- Trails Mountain Bike
- 5
- Trails E-Bike
- 5
- Trails Gravel Bike
- 1
- Trails Adaptive Bike
- 1
- Trails Hike
- 5
- Trails Trail Running
- 5
- Trails Dirtbike/Moto
- 3
- Total Distance
- 2 miles
- Total Descent Distance
- 1 mile
- Total Descent
- 813 ft
- Total Vertical
- 505 ft
- Highest Trailhead
- 1,454 ft
- Reports
- 8
- Completed Counter
- 17
Popular Crolles Mountain Biking Trails
• 100 ★ 0.0 • 948 ft • 0 ft • 6 • • hike
Single longeant le ruisseau de Crolles. L'entrée débute avec un passage en marche un peu technique (virage)
• 40 ★ 0.0 • 3,163 ft • 112 ft • 4 • • hike
Double sections raidasse au milieu, mais tout passe sur le VTT en sortant les gros mollets
• 60 ★ 0.0 • 3,031 ft • 126 ft • 3 • • hike
Très jolie monotrace. Une petite section plus technique au milieu.
• 80 ★ 0.0 • 1,440 ft • 0 ft • 2 • • hike
Quelques marches et racines au départ, s'en suit un très jolie single très roulant en balcon
• 20 ★ 0.0 • 1,102 ft • 0 ft • 2 •
Première partie de la descente avec un chemin un peu étroit bordé par un muret (pas d'exposition), et quelques arbres. Seconde partie avec des marches en rondin de bois. Troisième partie rapide, avant de plonger à gauche pour une...
Recent Trail Reports
| status | trail | date | condition | info | user |
|---|---|---|---|---|---|
| Craponnoz cut | Oct 10, 2026 @ 1:54pm (Europe/Paris) Oct 10, 2026 | Wet | Mickey38 | ||
| Plâtre Magny | May 13, 2026 @ 1:35pm (Europe/Paris) May 13, 2026 | Ideal | Mickey38 | ||
| Ruisseau de Crolles | May 13, 2026 @ 1:35pm (Europe/Paris) May 13, 2026 | Ideal | Mickey38 | ||
| Rochers du Luisset | Feb 25, 2026 @ 2:58pm (Europe/Paris) Feb 25, 2026 | Ideal | Mickey38 |
Activity Feed
| username | action | type | title | date |
|---|---|---|---|---|
| Mickey38 | add | report | activity #105630644 | Oct 10, 2026 @ 1:49pm Oct 10, 2026 |
| provencemb | update | trail | activity #96688366 | Jun 10, 2026 @ 12:02pm Jun 10, 2026 |
| Mickey38 | add | report | activity #94627669 and 1 more | May 13, 2026 @ 8:02am May 13, 2026 |
| provencemb | add | region | activity #90260564 | Mar 9, 2026 @ 5:32am Mar 9, 2026 |
| provencemb | update | trail | activity #90258280 and 3 more | Mar 9, 2026 @ 4:13am Mar 9, 2026 |
Activity Type Stats
| activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | activity logs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountain Bike | 5 | 2 miles | 814 ft | 1 mile | 505 ft | #16,066 | #1,321 | 8 | 6 | |||
| E-Bike | 5 | 2 miles | 814 ft | 1 mile | 505 ft | 8 | ||||||
| Gravel Bike | 1 | 3,163 ft | 167 ft | 1,864 ft | 171 ft | |||||||
| Adaptive Bike | 1 | 1,102 ft | 148 ft | 1,102 ft | 148 ft | |||||||
| Hike | 5 | 2 miles | 814 ft | 1 mile | 505 ft | 8 | ||||||
| Trail Running | 5 | 2 miles | 814 ft | 1 mile | 505 ft | 8 | 3 | |||||
| Dirtbike/Moto | 3 | 1 mile | 505 ft | 4,252 ft | 505 ft |
- By provencemb
B MTB Co & contributors - Admins: B MTB Co, JordiBN, Whipperman
- #73892 - 335 views
- crolles activity log | embed map of Crolles mountain bike trails |
Downloading of trail gps tracks in kml & gpx formats is enabled for Crolles.
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