An ultramarathon held in 1911 on Mount Baker in Washington was America's first mountain trail ultra. Runners raced to the trailheads in motor cars and trains.

The bizarre sport of marathon golfing originated in 1874 in Scotland. It involves golfing as many holes as possible in a day, and walking/running ultra distances.

Part 2: Johnny Salo was the greatest American ultrarunner of the early 1900s. He ran in the 1928 and 1929 races across American, the Bunion Derby

Johnny Salo was the greatest American ultrarunner of the early 1900s. He ran in C. C. Pyle's 1928 and 1929 races across America , "the Bunion Derbies"

A 480-mile running race was held in 1927 on the California/Oregon mostly dirt road, Redwood Highway. The participants were Karuk and Zuni Native Americans.

The Tarahumara are a native people in Mexico who have run ultradistances for centuries. They competed in American events in 1927 that captivated the public

The history of Western States 100, the oldest mountain trail 100-mile race, is a story of legends, myths, and folklore, but is a crown jewel of human endurance

Yiannis Kouros, from Greece, is the greatest ultrarunners of all time. He still holds many world records established decades ago that may never be broken.

Edward Payson Weston, the celebrated pedestrian, in 1909, at age 70, accomplished the most famous walk across American ever.

In 1878, Lyman Potter pushed a wheelbarrow across America on a wager. He was called a lunatic, idiot, and fool. But he did it and is an ultrarunning legend.