USFS National Forest System Trails · Lincoln National Forest · New Mexico · Updated June 2026
Heart Attack Cyn (USFS trail 235) is a 1.3 mi trail in Lincoln National Forest, New Mexico. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Heart Attack Cyn?
| 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 Lincoln National Forest, 17% of rideable trail miles are open to mountain bikes — a Bike Access Grade of D.
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About this trail
Heart Attack Cyn (USFS trail 235) is a 1.3 mi trail in Lincoln National Forest, New Mexico. The figures here are pulled from the official US Forest Service trail data for Lincoln National Forest, covering the trail's mileage, tread, grade band, and the bike and e-bike uses the agency lists as designated. Underfoot, the trail is recorded as native material. USFS slope data puts it in the Advanced band (grade band 12-20%), meaning a steep 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 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 Heart Attack Cyn?
- Mountain-bike use on Heart Attack Cyn 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 Heart Attack Cyn?
- Class 1, Class 2, Class 3 e-bikes are designated on Heart Attack Cyn in the USFS data.
- How long is Heart Attack Cyn?
- Heart Attack Cyn measures about 1.3 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Heart Attack Cyn?
- USFS data records the tread surface of Heart Attack Cyn as native material.
- How difficult is Heart Attack Cyn?
- 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 Lincoln National Forest (USFS trail geometry isn't mapped).
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