Prom. PC7 Silva Palma to PC8 Brunswick and finally to PC9 Froward, mean 111 km of the hardest trekking with a rappel in Prom. PC7 Silva Palma to PC8 Brunswick and finally to PC9 Frowar, mean 111 km of the hardest trekking with a rappel in PC8.

The racers start the trekking along the river's basin towards southeast from the PC7, 11 km of peat bog, interrupted later for deep narrow bench of 100mts. At this zone the racers must walk down to the river Raúl, passing extensive forested places that sometimes is transformed in a maze of fallen trunks. Perseverance and patience is the key at this stage.

Teams retake the peat, always interrupted with small bankrupts, getting to the km 24 of the trekking. The following 16 km travels through a mountain cord, where the experience and knowledge on navigation will be particulary needed. The cord consists on rock edges, parallel narrow passes and another perpendiculars to navigation's principal edge, some depth are 400 mt. Long, altitudes of 700 m to 900 m at hills and peaks of over a thousand meters. At this stretch it is possible to see animals like the Chilean Huemul (deer), foxes, condors and pumas.

Once the sector of mountain was finished the racers fowards the basin of the river of Gold steel long peat bogs along narrow passes are in the way.

When they approuch km 14 getting to the Strait Of Magellan, at PC8 Brunswick, comes a sector of ropes where a rapel of 100 mts is installed to raffle the narrowing river Nodales. Next continue for mobs and a certain amount of forest to the sea.

The track keep´s 8 km South alongshore, ascending continuosly up to 400 mt to achieved the goal arriving to the furthest point of the continental platform, the Cross of Seas (Froward's Cross and PC9), Welcome to the end of the world.