USFS National Forest System Trails · Tongass National Forest · Alaska · Updated June 2026
Big Hollow (USFS trail 2250060) is a 0.6 mi trail in Tongass National Forest, Alaska. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Big Hollow?
| 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 Tongass National Forest, 0% of rideable trail miles are open to mountain bikes — a Bike Access Grade of F.
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About this trail
Big Hollow (USFS trail 2250060) is a 0.6 mi trail in Tongass National Forest, Alaska. 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 imported compacted material. USFS slope data puts it in the Easy band (grade band +0-5%), meaning a gentle climb — keep in mind this measures steepness, not trail technicality. For traditional mountain bikes, use is discouraged according to USFS data. On the electric side, Class 1, Class 2, Class 3 e-bikes are also designated — Class 1 being pedal-assist only, Classes 2 and 3 adding a throttle and higher assisted speed. The route is mapped as USFS Trail Class 4 on the agency's 1-to-5 development scale, where 1 is the most primitive, minimally maintained tread and 5 is the most developed. Treat this as a planning reference rather than a live conditions report, and verify any time-sensitive closure or order with the ranger district that manages Tongass National Forest.
Frequently asked questions
- Can you mountain bike on Big Hollow?
- Mountain-bike use on Big Hollow 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 Big Hollow?
- Class 1, Class 2, Class 3 e-bikes are designated on Big Hollow in the USFS data.
- How long is Big Hollow?
- Big Hollow measures about 0.6 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Big Hollow?
- USFS data records the tread surface of Big Hollow as imported compacted material.
- How difficult is Big Hollow?
- Its grade-based difficulty is Easy (grade band +0-5%), 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 Tongass National Forest (USFS trail geometry isn't mapped).
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