New this year: courses are 5K and 10K with some new trails, and there will be chip timing. Technical terrain, mix of single and double tracks. Park is south of Binghamton, north of Montrose, PA.
https://runsignup.com/Race/PA/Montrose/SaltSpringsTrailRace
http://www.friendsofsaltspringspark.org/html/welcome.html