Running is a popular pastime – even in the snow of winter:
Some people even run in snow shoes:
Note how the act of running changes the length and nature of the stride (ie to in-line rather than staggered left-right):
Simple (non-Bigfoot) explanation:
It is notable that the large prints are absolutely in line while the human prints to the right are staggered left and right like most of us humans walk.
When they discovered the hobbit fossils and dated them? Nobody was laughing at little hairy wild man stories anymore in SE Asia.
A large Hominid fossil find in North America? Would have a similar result.