Global warming is expected to be greatest in the Arctic.
The Sadler 's Ultra Challenge is a wheelchair and handcycle race that runs between Fairbanks and Anchorage , Alaska .. wheelchair. wheelchair. handcycle. handcycle. Fairbanks. Fairbanks. Anchorage. Anchorage, Alaska. It is the world 's longest wheelchair race .. wheelchair. wheelchair. Divisions include Men 's Handcycle -LRB- with A , B , and C classes -RRB- , Men 's Wheelchair , and Women 's Handcycle .. The 267 mi race is run in eight stages and takes six days to complete .. The annual competition began in 1984 and occurs in July of each year .