Malaysia · measured trail

Gunung Jerai

Kedah’s landmark mountain, climbed from the coast — 24 km and +945 m from near sea level up to Jerai View at 989 m, GPS-measured. The longest single day in our training block.

Measured first-hand by Kei on a COROS watch, 8 August 2026 · Yan, Kedah.

24km round trip
+945m climb
989m to Jerai View
6:14h door to door
4:44h moving
124avg bpm

Gunung Jerai (1,217 m) rises abruptly from the paddy plains of Kedah — the state’s landmark peak, visible for miles. We climbed the long Yan-side trail from near sea level up to Jerai View, a viewpoint at a measured 989 m on the mountain, and back: 24 km round trip, the biggest single day we logged in the whole build-up. Every number below is off the watch.

Interactive route

The Measured Journey

Every metre from a measured GPS track. Dated 8 August 2026.

Elevation (red) · heart rate (grey line) · drag to scrub · high point Jerai View (989 m).

Drag the slider, or tap the map, to move along the route.

The longest day

A Himalayan trek isn’t one hard day — it’s many long ones, back to back. Jerai is where we train that: 24 km, our longest measured day, a 940 m descent — the whole way down in one continuous drop — at a gentle 7.9% and a 124 bpm average that says this is an aerobic base day rather than a max effort. Big distance, from sea level up a real mountain, in the heat.

It’s the endurance end of the block — see how it sits alongside the steeper hills on the measured training journey.

What to expect

Frequently asked

How long is the Gunung Jerai hike from Yan?
We measured 24 km on a COROS — the longest single training day in our whole build-up — climbing the Yan side from near sea level up to Jerai View at 989 m and back. Our recording was 6 hours 14 minutes door to door, 4 hours 44 minutes of it moving.
How high is Jerai View?
Our measured track climbs to Jerai View at 989 m — a viewpoint on the Yan-side trail, below Gunung Jerai’s 1,217 m summit (which is higher up the mountain and also reachable by the paved summit road). The stats here are the climb to the viewpoint.
How hard is it?
The challenge is distance and heat rather than steepness. It is a measured +945 m over 24 km with a gentle descent (940 m at 7.9%), and a 124 bpm average — an aerobic base-endurance day rather than a maximal one.
Is Gunung Jerai good trek training?
Yes, for endurance. A Himalayan trek is many long days back to back; a 24 km climb from near sea level builds exactly that base. It is the long-distance counterpart to the steeper hills in our block.

More measured trails

One of the Malaysian hills we train on for the big treks — measured first-hand, same standard as the rest of the site. See all the measured trails, how we measure, and the full training journey.