Vietnam extreme cycling Ha Giang is the ultimate adventure for thrill-seekers, offering a heart-pounding journey through the rugged landscapes of Vietnam’s Northeast. The Ha Giang Loop, a 250-350km circuit within the UNESCO-listed Dong Van Karst Plateau Geopark, challenges cyclists with steep climbs, technical descents, and off-road singletrack trails, all set against dramatic limestone peaks and vibrant ethnic villages.