Ijen is a climb of 32.0 kilometers (hors catégorie). Ijen tops out at 1,871 m above sea level. It is located in Kelurahan Kepatihan, Jawa Timur, Indonesia. The average gradient is 6.0% with a maximum of 21.6%. The climb has 1918 meters of elevation gain.
Difficulty breakdown: The Temenggungan climb has two distinct halves. The first 20 km (average gradient of 3-4%) is a long but manageable approach. The real pain starts after km 20, with a brutal 10 km section where the gradient stays above 9% the whole way, peaking at 14% between km 24 and 25. This final HC section packs in most of the total elevation gain.
Pacing advice:
1. Pace yourself: Spin at a steady, controlled tempo for the first 20 km to save your legs. The real effort starts at km 21.
2. Prepare for the double-digit ramps: Keep some mental and physical reserves for the double-digit gradients (9-14%) between km 21 and 30.
3. Ease off in the last km: The final two km (2% and 5%) give you a chance to recover a bit before the summit.
32.0 km • 1918 m D+
VAM: average climbing speed, based on elevation gain
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