Siwell Pass is a climb of 9.0 kilometers (hors catégorie). Siwell Pass tops out at 1,130 m above sea level. It is located in တနိုင်းမြို့နယ်, ကချင်ပြည်နယ်, မြန်မာ. The average gradient is 10.8% with a maximum of 16.8%. The climb has 974 meters of elevation gain.
Difficulty breakdown: This 9 km climb averages a brutal 10.8%, which puts it firmly in the hors catégorie (HC) bracket. The real challenge is how uneven it is: steep ramps (including an 18% wall in the last kilometre) follow one another with barely any respite. The 13% sections between km 2.5-3.0 and 5.5-6.0 are especially punishing.
How to manage the effort:
1. Pacing: Don't let the early kilometres fool you. Spin a comfortable gear and hold a steady effort (around 85-90% of your FTP) so you don't blow up with burning legs on the 11-13% stretches.
2. Save something for the finish: The last kilometre opens with an 18% wall. Keep some in the tank on the "easier" 7-8% sections between km 7.0 and 8.0 so you hit the final ramp with the freshest legs possible.
3. Break it up in your head: Split the climb into three thirds: the first (km 0-3) to find your rhythm, the second (km 3-6) to hold the effort on the sustained grades, and the last (km 6-9) to empty the tank on the savage finish.
9.0 km • 974 m D+
VAM: average climbing speed, based on elevation gain
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