Desafio Serra do Rio do Rastro

The Desafio Serra do Rio do Rastro is one of the most iconic cycling climbs in South America, often called "the most charming cycling race in Brazil." The 24 km course climbs 1,019 m through 284 curves from 200 m to 1,421 m altitude on what many consider the most spectacular mountain road in the world. Now in its 22nd edition, it is a bucket-list event for road cyclists across the continent. The climb averages 7.5% gradient but is far from uniform. The lower slopes feature steady 5-6% ramps through forested switchbacks, while the upper section steepens dramatically with exposed hairpins offering breathtaking views of the valley below. The final kilometers above the treeline can be windy and cold, a stark contrast to the warm start. The April date means autumn weather with crisp mornings and the possibility of fog at the summit. Training should focus specifically on sustained climbing ability. Build a foundation of threshold intervals on 15-25 minute climbs, practice pacing on long ascents to avoid going too hard early, and include some above-threshold surges to handle gradient changes. The relatively short distance means intensity matters more than pure endurance here.