Volunteers put in 241,936 hours maintaining the Appalachian Trail for future hikers to enjoy.
The National Trails System was established in 1965.
A team of mountaineers reached Elbrus - the highest mountain in Europe.
In 1838, Scottish-American environmentalist John Muir is born, arguably the father of modern hiking and outdoorsmanship.
In 1819 one of the first, major manicured hiking trails is created to lead up Mt. Washington in New Hampshire.
The idea that pleasure can be found by walking through the woods (aimlessly or for conquest) didn't come around until the 18th century. Until then it was regarded as an indication of poverty.