USFS National Forest System Trails · Mark Twain National Forest · Missouri · Updated June 2026
Chadwick126d (USFS trail 21-126D) is a 1.1 mi trail in Mark Twain National Forest, Missouri. Mountain bikes are designated as allowed year-round, with Class 1 e-bikes also designated.
Can I bike Chadwick126d?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | year-round |
| 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 Mark Twain National Forest, 100% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
Chadwick126d (USFS trail 21-126D) runs 1.1 mi through Mark Twain National Forest in Missouri. 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 Expert trail (grade band +20-30%); that reflects very steep gradient and is not the same as a technical MTB difficulty rating. Bike use is designated as allowed year-round. 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 2 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 Mark Twain National Forest.
Frequently asked questions
- Can you mountain bike on Chadwick126d?
- Yes. Mountain bikes are designated as allowed on Chadwick126d in Mark Twain National Forest, year-round, per USFS data.
- Are e-bikes allowed on Chadwick126d?
- Class 1, Class 2, Class 3 e-bikes are designated on Chadwick126d in the USFS data.
- How long is Chadwick126d?
- Chadwick126d measures about 1.1 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Chadwick126d?
- USFS data records the tread surface of Chadwick126d as native material.
- How difficult is Chadwick126d?
- Its grade-based difficulty is Expert (grade band +20-30%), 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 Mark Twain National Forest (USFS trail geometry isn't mapped).
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