I was looking for a list of patron saints (although I am not Catholic) to see whether there was one who was associated with trail work, hiking, etc. Came up completely empty, other than the patron saint of Ecology is--of course--St. Francis of Assisi.
Anyway, the site I was searching is called MyCatholicSource and just to scan through the alphabetical listing of patronages is interesting. Just within the "A" section we see that there are patron saints for:
Actors (St. Genesius)
Accountants (St. Matthew)
Ammunition Workers (St. Barbara)
Amputees (St. Anthony the Great)
Archaeologists (St. Jerome)
Auto Industry (St. Catherine of Alexandria)
Scrolling down, there are 3 patrons saints for Comedians (St. Genesius, Laurence, and Vitus), and the patron saint of Dog Bites is St. Ubald.
Not trying to poke fun here, but you just gotta smile at some of these!
The link to Ultrarunning? On the Ultrarunning side of life the best fit would be the patron saint of Athletes, St. Sebastian.
However, note that St. Sebastian also doubles as the patron saint of Bookbinders, Unruly Children, Contagious Diseases, Enemies of Religion (against), Funeral Directors, Iron Workers, Lead Workers, Neighborhood Watch, Pestilence (against), Plague, Police, Potters, Soldiers, Surgeons, and Swans...so go figure.