Mountain biking Ha Giang is an adrenaline-charged adventure through one of Vietnam’s most rugged and breathtaking regions. The Ha Giang Loop, a 250-350km circuit in the UNESCO-listed Dong Van Karst Plateau Geopark, offers mountain bikers a thrilling mix of technical singletrack trails, steep climbs, and heart-pounding descents, all set against a backdrop of limestone karsts and vibrant ethnic villages.