Old Ziro is a climb of 3.1 kilometers (category 1). Old Ziro tops out at 1,808 m above sea level. It is located in Hija, Arunachal Pradesh, India. The average gradient is 7.5% with a maximum of 14.5%. The climb has 234 meters of elevation gain.
Difficulty analysis: This 3.1 km climb averages 7.5% over 234 m of elevation gain, which justifies its 1st category rating. The start is the hardest part, with KM 0.0-0.5 at 9%, followed by steady sections at 6% over KM 0.5-1.0, 1.0-1.5 and 2.5-3.0. KM 2.0-2.5 at 9% is the toughest stretch, right in the heart of the effort, while KM 3.0-3.1 drops slightly (-2%).
Tips for the effort:
1. Pace your start. Don't go all out on the KM 0.0-0.5 at 9%, or you'll pay for it later on.
2. Recover before the key section. Use KM 1.5-2.0, less steep at 5%, to catch your breath and get ready for the 9% of KM 2.0-2.5.
3. Don't ease off at the end. On KM 3.0-3.1, where the road dips slightly, keep a steady rhythm all the way to the finish line.
3.1 km • 234 m D+
VAM: average climbing speed, based on elevation gain
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