Halong Bay in Vietnam is a UNESCO World Natural Heritage site and you’ll have the perfect reason to visit it by joining the International Halong Bay Heritage Marathon. The 2018 edition of the race will be held on November 25 and it has four distances from 5K, 10K, 21K and the full 42K marathon course. The 42K route will take you through various sites of interest including the Quang Ninh Museum and the Bai Chay Bridge which is the longest single span bridge in Southeast Asia. Tours are available for runners who would like to spend more time enjoying the sights before and after the event. Register your slot for the 2018 Halong Bay Heritage Marathon.