Jangsu Mountain is a climb of 9.3 kilometers (hors catégorie). The climb finishes at 700 m above sea level. It is located in Chaeryong, 황해남도, 조선민주주의인민공화국. The average gradient is 7.7% with a maximum of 14.9%. The climb has 713 meters of elevation gain.
Difficulty analysis: This HC climb covers 9.3 km for 713 m of elevation gain, with an average gradient of 7.7%. The climb is uneven: after a warm-up section at 3% between 0.0 and 0.5 km, the road dips between 1.0 and 3.0 km before ramping up again. The real pain is concentrated between 4.0 and 9.0 km, with sections at 12%, 14%, 12% then 15% between 5.0 and 7.0 km. The finale, at 11% between 8.0 and 9.0 km, still demands plenty of reserves.
Tips for pacing the effort:
1. Recover on the descents. Use the downhill section between 1.0 and 3.0 km to spin out your legs and catch your breath, without going too hard.
2. Manage your effort between 5.0 and 7.0 km. On the 12 to 15% ramps, only stand up when you really need to, keep a smooth cadence and pick a gear you can hold without going into the red.
3. Save something for the finish. Between 8.0 and 9.0 km, the 11% ramps come after a long effort: hold a steady rhythm and only empty the tank in the final 300 metres at 6%.
9.3 km • 713 m D+
VAM: average climbing speed, based on elevation gain
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