USFS National Forest System Trails · Willamette National Forest · Oregon · Updated June 2026
Alpine (USFS trail 3450) is a 15.4 mi trail in Willamette National Forest, Oregon. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Alpine?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Accepted but discouraged | — |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | year-round |
| Class 2 e-bike (throttle, 20 mph) | Allowed | year-round |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | year-round |
Zooming out: across Willamette National Forest, 41% of rideable trail miles are open to mountain bikes — a Bike Access Grade of C.
Watch Willamette National Forest for access changes
Email me when USFS mountain-bike or e-bike designations change for trails in Willamette National Forest. Free, unsubscribe anytime.
About this trail
Alpine (USFS trail 3450) runs 15.4 mi through Willamette National Forest in Oregon. Everything below comes straight from the US Forest Service National Forest System Trails dataset — length, surface, slope-derived difficulty, and the specific bike and e-bike designations on record — so you can check legality before you load up. The tread is mapped as native material. Based on slope, this is a Advanced trail (grade band 12-20%); that reflects steep gradient and is not the same as a technical MTB difficulty rating. For traditional mountain bikes, use is discouraged according to USFS data. The record additionally permits Class 1, Class 2, Class 3 e-bike use; recall that Class 1 is pedal-assist, while Class 2 adds a throttle and Class 3 a higher cutoff speed. The route is mapped as USFS Trail Class 3 on the agency's 1-to-5 development scale, where 1 is the most primitive, minimally maintained tread and 5 is the most developed. For day-of certainty on closures or seasonal orders, check directly with the ranger district, since this reflects the USFS data as of the latest refresh.
Frequently asked questions
- Can you mountain bike on Alpine?
- Mountain-bike use on Alpine is discouraged in USFS records, though Class 1 e-bike use is designated. Confirm current rules with the managing ranger district.
- Are e-bikes allowed on Alpine?
- Class 1, Class 2, Class 3 e-bikes are designated on Alpine in the USFS data.
- How long is Alpine?
- Alpine measures about 15.4 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Alpine?
- USFS data records the tread surface of Alpine as native material.
- How difficult is Alpine?
- Its grade-based difficulty is Advanced (grade band 12-20%), derived from USFS slope data. This reflects steepness, not technical mountain-bike difficulty.
How we read this data
Grade-based difficulty above is the USFS grade (route steepness), not a technical mountain-bike rating — a gentle-grade trail can still be rocky or technical, and vice versa. Bike and e-bike status come verbatim from the USFS managed-use fields for this trail; we never infer access we can't cite. See our methodology for how the dataset is built and what each field means.
Where it is
Approximate location of Willamette National Forest (USFS trail geometry isn't mapped).
Where to stay near Willamette National Forest
Find hotels, cabins, and vacation rentals near Willamette National Forest — plan your ride.
Top-rated places to stay near Willamette National Forest
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Riding Willamette National Forest?
Trail-access updates and trip ideas by email.
More trails in Willamette National Forest
24.2 mi · Advanced grade
20.2 mi · Advanced grade
14.9 mi · Advanced grade
10 mi · Advanced grade
8.9 mi · Advanced grade
8.5 mi · Advanced grade