Twice a year: May 7-12 and October 7-12 Gobi Challenge May 7 or October 7– Day 1: Gathering and expedition ceremony in DunhuangMay 8 or October 8– Day 2: First day of hiking, 28 kilometersMay 9 or October 9 – Day 3: Second day of hiking, 30 kilometersMay 10 or October 10 – Day 4: Third day of hiking, 32 kilometersMay 11 or October 11 – Day 5: Fourth day of hiking, 18 kilometers, and return to Dunhuang city for a celebration ceremonyMay 12 or October 12– Day 6: Departure and return journey* For registration in May, please refer to the itinerary for May 7-12; ** For registration in October, please refer to the itinerary for October 7-12 Details