Kelok Sembilan is a climb of 0.8 kilometers (category 1). Kelok Sembilan tops out at 833 m above sea level. It is located in kabupaten de Lima Puluh Kota, Sumatera Barat, Indonesia. The average gradient is 20.1% with a maximum of 20.6%. The climb has 153 meters of elevation gain.
Difficulty breakdown: This short climb covers 0.8 km at an average gradient of 20.1% for 153m of elevation gain, which makes it a very tough and intense ascent. The KM 0.0-0.2 section at 29% is a brutal start, while the KM 0.2-0.4 section at 7% gives you a brief breather before it ramps up again. The KM 0.4-0.6 section dips to -10%, a small chance to recover a bit, but the KM 0.6-0.8 section at 37% is the hardest part, just before the finish. Rated Cat 1, this climb is about intensity more than duration.
Tips for the effort:
1. Manage the start. Don't let the adrenaline get the better of you in the KM 0.0-0.2 section at 29%. Find a steady rhythm from the first pedal strokes.
2. Make the most of the breather. On the KM 0.2-0.4 section at 7%, take the time to get back up to speed and rest your legs while keeping a smooth, light gear.
3. Save something for the finish. On the KM 0.6-0.8 section at 37%, hold back some power for the final push. Stay seated if you need to, then stand up for the last few meters.
0.8 km • 153 m D+
VAM: average climbing speed, based on elevation gain
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