>> Home    >> Race Information    >> Course Map/Elevation    >> Lodging    >> 2023 Participants    >> Results    >> Contact Race Director    >> Pictures    >> Links 11/9/2021 2022 Results STAY UP TO DATE BY FOLLOW OUR INSTAGRAM ACCOUNT - SYLAMORE50K Click here to follow Sylamore50k Instagram account. Click here to read about the Sylamore 50K in Trail Runner Magazine. Hoof It for Heifer 20K Trail Run at Petit Jean State Park, Benefitting Heifer International. If you enjoy the Sylamore 50k, come join us for 3 times the fun in March at the 3 Days of Syllamo. Come enjoy the "toughest marathon east of the rockies!" The Athens Big Fork Marathon and 17 Mile Blaylock Creek Fun Run. Big Hill Pond's 50k and 25k. October 20, 2018. Arkansas Ultra Running Association is dedicated to promoting ultra and trail running in and around the state of Arkansas.