USFS National Forest System Trails · Allegheny National Forest · Pennsylvania · Updated June 2026
Timberline Atv D Loop (USFS trail 85026D) is a 5.9 mi trail in Allegheny National Forest, Pennsylvania. Mountain bikes are designated as allowed year-round, with Class 1 e-bikes also designated.
Can I bike Timberline Atv D Loop?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | year-round |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | Jan–Sep, December |
| Class 2 e-bike (throttle, 20 mph) | Allowed | Jan–Sep, December |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | Jan–Sep, December |
Zooming out: across Allegheny National Forest, 81% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
Timberline Atv D Loop (USFS trail 85026D) is a 5.9 mi trail in Allegheny National Forest, Pennsylvania. The figures here are pulled from the official US Forest Service trail data for Allegheny National Forest, covering the trail's mileage, tread, grade band, and the bike and e-bike uses the agency lists as designated. The tread is mapped as imported compacted material. No grade band is recorded, so a steepness-based difficulty isn't available for this trail. Bike use is designated as allowed year-round. The record additionally permits Class 1, Class 2, Class 3 e-bike use, Jan–Sep, December; 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 Timberline Atv D Loop?
- Yes. Mountain bikes are designated as allowed on Timberline Atv D Loop in Allegheny National Forest, year-round, per USFS data.
- Are e-bikes allowed on Timberline Atv D Loop?
- Class 1, Class 2, Class 3 e-bikes are designated on Timberline Atv D Loop in the USFS data.
- How long is Timberline Atv D Loop?
- Timberline Atv D Loop measures about 5.9 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Timberline Atv D Loop?
- USFS data records the tread surface of Timberline Atv D Loop as imported compacted material.
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 Allegheny National Forest (USFS trail geometry isn't mapped).
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