USFS National Forest System Trails · Boise National Forest · Idaho · Updated June 2026
Upper Zigzag (USFS trail 569003) is a 1.1 mi trail in Boise National Forest, Idaho. Mountain bikes are designated as allowed, Jun–Sep, with Class 1 e-bikes also designated.
Can I bike Upper Zigzag?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | Jun–Sep |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | Jun–Sep |
| Class 2 e-bike (throttle, 20 mph) | Allowed | Jun–Sep |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | Jun–Sep |
Zooming out: across Boise National Forest, 99% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
In Boise National Forest, Idaho, Upper Zigzag (USFS trail 569003) covers 1.1 mi of National Forest System trail. This profile summarizes what the official US Forest Service trail record says about riding it: how long the trail is, what it's built on, how steep the route grades out, and which forms of bike use the agency has designated. The tread is mapped as native material. No grade band is recorded, so a steepness-based difficulty isn't available for this trail. Mountain bikes are allowed, with a Jun–Sep season in the data. The record additionally permits Class 1, Class 2, Class 3 e-bike use, Jun–Sep; 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. Because conditions, closures, and local orders change between data refreshes, confirm the current status with the managing ranger district before you ride.
Frequently asked questions
- Can you mountain bike on Upper Zigzag?
- Yes. Mountain bikes are designated as allowed on Upper Zigzag in Boise National Forest, typically Jun–Sep, per USFS data.
- Are e-bikes allowed on Upper Zigzag?
- Class 1, Class 2, Class 3 e-bikes are designated on Upper Zigzag in the USFS data.
- How long is Upper Zigzag?
- Upper Zigzag measures about 1.1 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Upper Zigzag?
- USFS data records the tread surface of Upper Zigzag as native 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 Boise National Forest (USFS trail geometry isn't mapped).
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