We begin the day with a 1-hour transfer on a beautiful coastal highway to Xuan Tho village, a seaside district, to start this morning ride. We'll follow a small route, bike through tiny villages and rice paddies, and stop at local families making bamboo brackets before we undulate on paths. Then, we will ride along the calm river to La Hai. The routes offer amazing sceneries along back roads, charming villages, and a lush valley, and sometimes along the sleepy river. We'll have a chance to race with Reunification Express's train parallel along the railways to Chi Thanh, where your delicious lunch awaits.

Following lunch, the quiet back road along the sleepy river and gravel road along Phu Ngan river, give us more chances to meet locals along fishing villages with many basket bamboo boats. There are many stops in tiny towns for coffee breaks and fruit. Then, we continue cycling on the hilly road to Da Dia Reef. The site is about 100 meters wide and 250 meters long, with an estimated 35,000 columns of basalt rocks. The rocks are dark lava columns with roughly flat surfaces of different shapes - round, pentagon, hexagon, polygon, etc. Locals called Ghenh Da Dia. We ride on the small concrete path through rice paddy fields and a lagoon to An Hai. We ride through tapioca farmlands and sweet potatoes and then to the coast to Tuy Hoa City. We'll transfer to Nha Tra in the late afternoon. Farewell dinner in town.