David Samson, left, Debra Carneol, Cara Nelson and Bret Parker. All ran the 777 World Marathon Challenge five years ago and now all four will be participating in this weekend's challenge.
Bret Parker running the New York City Marathon in 2021. As part of his fight against Parkinson's Disease, Parker ran in both the Boston and New York City marathons in the same year.
Bret Parker finishing the Antarctica leg of the World Marathon Challenge in 2018.
Bret Parker finishing another leg of the World Marathon Challenge in 2018.
One fine body…