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38.6 miles
Distance
7,372 ft
Climb
-7,346 ft
Descent
4,773 ft
High Point
26 ft
Altitude change
1,079 ft
Altitude min
1,129 ft
Altitude start
1,155 ft
Altitude end
-87.9%
Grade max
50.5%
Grade min
21 miles
Distance climb
16 miles
Distance down
2 miles
Distance flat
If shuttling isn't available, loop option for ATCA
Detailed Description
ATCA loop is a 39 mile popular intermediate route located near Westfir Oregon. This mountain bike only route. This route includes 16 trails. This route climbs 7,372 ft with a max elevation of 4,773 ft then descends -7,346 ft.
Trail Issues on Route
- Minor Issue / Yellow: 1 trail (newest: Jul 19, 2026)
Local Trail Association
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Stats
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Distance39 miles
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Avg time9 hr 13 min
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Altitude change26 ft
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Altitude min1,079 ft
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Altitude start1,129 ft
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Altitude end1,155 ft
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Climb1 mile
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Descent-7,346 ft
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Grade max-87.9%
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Grade min50.5%
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Distance climb21 miles
-
Distance down16 miles
-
Distance flat2 miles
38 Reviews & Comments
LowellNZjVy1
Rode this two years ago using a shuttle to Alpine. It was the biggest, baddest trail system I’ve done. The climbs weren’t horrendous and the downhills weren’t death defying, just a super combination with alpine and forested flow. Top notch trail system.
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Trails in Route
| 863 ft | |||||
| 3 miles | |||||
| 2 miles | |||||
| 6 miles | |||||
| 3 miles | |||||
| 180 ft | |||||
| 4 miles | |||||
| 2,953 ft | |||||
| 1 mile | |||||
| 5 miles | |||||
| 3 miles | |||||
| 1 mile | |||||
| 2 miles | |||||
| 1 mile | |||||
| 3,704 ft | |||||
| 4 miles |
Details
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Riding area
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Primary ActivityMountain Bike
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Difficulty ratingBlue
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Trail Conditions
- Unknown
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- Snow Packed
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- Snow Cover Partial
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
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- Ideal
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Trail Flow (Ridden Direction)
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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%
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- < 50%
- bi-directional trail
- no data
Trail Last Used
Trailforks scans activity logs to determine the last time a trail was ridden.
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Trail Ridden Direction
The intended direction a trail should be ridden.
- Downhill Only
- Downhill Primary
- Both Directions
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Trail Popularity ?
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Trails are compared with nearby trails in the same city region with a possible 25 colour shades.
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Winter Trails
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A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
Missing Trails
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Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
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BC Backroad Status
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Photos
Videos
mtb
7,000 Foot Descent Through Oregon's Backcountry | A.T.C.A. - Oakridge, OR
7:38 | 383 | comments: 0 | favs:
Oct 13, 2020
youtuber
![Best mountain bike trail in Oakridge, OR -...]()
mtb
Best mountain bike trail in Oakridge, OR - Alpine Trail
trail: Lower Alpine Trail
16:26 | 267 | comments: 0 | favs:
Oct 10, 2025
Recent Trail Reports Along Route
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- By smithmackensie96
& contributors - #20029 - 4,018 views
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