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Ontario trails · Ottawa-Temiskaming Highland Trail (NO REGULAR MAINTENANCE)

Ottawa-Temiskaming Highland Trail (NO REGULAR MAINTENANCE)

A 17.4-mile out-and-back in Ontario, with 540 ft of climbing. Reaches Hidden Lake.

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Length
17.4 mi
Elevation gain
540 ft
Difficulty
Expert
Max grade
48%
Steepest mile
+450 ft
Tread at ≥10% grade
4.5 mi
Shape
out-and-back
Bikes
no
Horses
no

Elevation profile

588 – 1,127 ft1357911131517

The climbing is spread fairly evenly along the route. It gives back about 2,730 ft along the way, so it rolls rather than climbing steadily.

3-D terrain

3-D terrain view of Ottawa-Temiskaming Highland Trail (NO REGULAR MAINTENANCE)

NRCAN MRDEM ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5

Reaches

Heads up

Stream ford: expect at least one unbridged crossing.

Getting there

Ottawa-Temiskaming Highland Trail (NO REGULAR MAINTENANCE) access. 46.72767, -79.12758 · directions

Daylight at the trailhead

On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 7:02 a.m., the sun rises at 7:32 a.m. and sets at 6:31 p.m., and the last usable light fades about 7:02 p.m. (EDT) — 10 h 59 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 34.8-mile round trip works out to roughly 13 h 25 min of walking — more than a single day of daylight here, so plan it as an overnight or hike it in sections.