On Jan. 1, runners, walkers and bikers all over Lincoln set out to explore every trail within the Lincoln city limits by the end of the year.  According to the Great Plains Trail Network website, Lincoln Trail-A-Thon originated in November 2019 as a challenge for Lincolnites to navigate the intricate system of trails that permeate the city, as well as to donate funds to the Great Plains Trail Network, an organization that works with the city to restore and keep the trails intact. Dena Noe, the Lincoln Trail-A-Thon chair, said the idea originated from a small group of people from the Great Plains Trail Network who helped connect all the…