Complex sentence: Chris has climbed to 8000 meters on Makalu in the Himalaya, skied first descents in Denali National Park, was the first person to ski all 54 of Colorado's peaks over 14,000 foot elevation in one year.
Split into simpler sentences: Chris has climbed to 8000 meters on Makalu in the Himalaya and skied first descents in Denali National Park. Davenport was the first person to ski all 54 of Colorado's peaks over 14,000 foot elevation in one year.