Fitness in the endurance / strength conditioning sense, as well as mental focus and determination is more relevant than outright pace and / or climbing ability. That said, entrants will face fairly big days in the saddle (30-40Km, 6-7 hrs a day) on physical trails, in potentially hot conditions and at altitudes up to 2700m.    Uplifts will be lift-assisted but some climbing (2 hours per day max) will also be required.