Kinsman Notch

Overview

Kinsman Notch sits in New Hampshire's White Mountains and registers as a Category 3 climb — a classification that undersells the effort when the road kicks up toward its peak gradient. The climb runs 6.7 km from start to summit, gaining 287 m in net elevation. Total ascent over the course is 358 m, meaning the road is not a clean, unbroken ramp: there are undulations that add cumulative work beyond what the net gain figure alone implies.

The start elevation is 279 m and the summit tops out at 566 m. At a 4.26% average gradient, Kinsman Notch looks moderate on paper. Ride it and you will find sections that push well beyond that average.

How the Gradient Unfolds

The average gradient of 4.26% keeps things manageable for most of the ascent, but the maximum gradient of 11.74% signals that at least one stretch demands genuine effort. That nearly 12% pitch is steep enough to stall under-geared riders and will spike heart rate sharply if you arrive at it already carrying fatigue from the lower slopes.

Because total ascent (358 m) exceeds net gain (287 m), expect at least one section where the road dips before climbing again. These false-flat or downhill interruptions feel like relief in the moment but rob you of momentum when the gradient resumes. Riders who ease off completely on the descent portions often find themselves spinning out of a comfortable cadence just as the road tilts back upward.

Pacing Notes

• Set a sustainable power target early. With 6.7 km to cover, there is enough distance for an aggressive opening effort to cost you significantly by the upper third. Targeting a consistent percentage of your FTP — rather than riding by feel — is the most reliable approach. Use the FTP estimator if you need a baseline before the ride.
• Do not treat the average gradient as your ceiling. At 4.26%, the average invites riders to push harder than they should. The 11.74% maximum represents a near tripling of that average. If you are already near threshold when you hit that pitch, the climb becomes a damage-limitation exercise.
• Manage the undulations. On the dip sections, resist the urge to soft-pedal entirely. Maintain light pressure to keep legs from stiffening, then carry that into the next rise without a hard acceleration.
• Control breathing on steep ramps. When the gradient spikes toward its maximum, shorten your focus window — pick a landmark 50–100 m ahead rather than staring at the summit.

Gearing Notes

For a climb with an 11.74% maximum gradient, compact gearing (50/34 or equivalent) is strongly advisable unless you carry significant climbing fitness. A rear cassette reaching at least 28t or 32t gives you the bailout gear you need on the steepest ramp without forcing a gear-mashing slog. Riders on 1x drivetrains should verify their low-end ratio before committing to a hard effort — running out of gears at nearly 12% gradient is an avoidable problem.

Riders who typically climb well on Category 3 routes like Alpe d'Huez segments or similar domestic notch roads will recognize the rhythm here: a moderate sustained grind punctuated by at least one section that demands genuine respect.

Bottom Line

Kinsman Notch is a legitimate workout for any endurance cyclist. The Category 3 label and sub-5% average gradient can lull you into underestimating it. The 358 m of total ascent, the undulating profile, and a maximum gradient close to 12% ensure that riders who show up without a plan pay for it before the summit.