The Departure of RR 80 will be at Casela Bird Park / Yemen Nature Reserve on the west coast of Mauritius on the 13th of May 2017 at 05h00 - opening of the post at 03h30 / closing of start check at 04h45. The race will go through this private nature reserve: the track is undulating with steep slopes, on a dry and quite hot ground. After Yemen the race will join Black River National Park via 4.5km of tarred road. After 1.5 km into the Park, runners will face a major climb of 6 km in the middle of the tropical forest to reach 500 m higher, through a humid track, the Jet Ranch where rest facilities and meal are available. After Jet Ranch the race will go once again down through the forest before another major climb of 5 km with 600 m of positive height (Parakeet Trail) to reach a place called Parakeet, the highest point of the race at an altitude of 720 m. As from there and after 800 meters of tarred road the race will go through the track Bel Ombre Trail; magnificent views on the south of the island – during an 8 km descent on a very pleasant large track in the middle of the forest and then in the middle of sugar cane fields. The Finish will be in the south in front of Tamassa hotel.