Begins our pedal this morning as we head out of town, cycling for the first 25km on a relatively flat road through the landscape of terraced rice paddy fields. Passing through minority villages, we cycle the next 25km up winding roads into the vast limestone mountain range with its perpendicular rock walls, climbing 800m towards the mountain road past "Heaven Gate 1". As we pass through mountain villages, sometimes covered by clouds, we will receive a friendly greeting from the local communities. From the pass, we can look at amazing views, including the famous vista of the Tam Son Valley with the 'Twin Hills, and observe Quan Ba town's countryside. The ride will continue to Yen Minh town. There will be a transfer to Yen Min in the late afternoon.