trail runner 

A runner of the more hardcore variety who enjoys running in wooded areas. A paved bike path is NOT a trail. Anything paved in any fashion is in fact, not a trail. A trail runner enjoys the elements. These include, but are not limited to, rainstorms, snow, wind, cold, heat, etc. A trail runner is generally more laid back than a road runner, and yearns to connect with nature and their bodies. Some obstacles trail runners may face are:
rocks, roots, streams, snakes, spider webs, bears, mountain lions, gigantic hills (mountains), mud, fallen trees, branches that stick out into the middle of the trail, very, very long drops that may result in death if they should happen to fall off a single track trail, dehydration, tons of blistering...

Trail runners often run much longer and farther distances than road runners do, including 50k, 50 miles, 100 miles. Many can be found in California, but are found across the US including Colorado, Virginia, West Virginia

"Why is that guy so awesome?"

"Because he is a trail runner."

trail runner by cmargheim December 1, 2007

designated train runner 

A girl that is designated to give head and/or have sexual intercourse with any male that would like it. A different girl is usually designated every weekend.

Thomas - Yo George, who's the designated train runner this weekend?
George - I think Sarah O'Connell, she loves running train man.

designated train runner by morgan 9875 April 21, 2008

tail runner 

A person, who will purposely wait for an attractive runner to run by so they can stare at said runners bum, bouncing ta-tas, and or strike up a conversation.

Holly waited patiently for Emily to run by, she didn't consider herself to be a tail runner though.

tail runner by alfreds ladies October 22, 2013

Train Runner 

a guy who participates in running train on some bitch.

Van: "Hey look isn't that Bovice over there?!!!"

Orpheus: "Yeah, it is!!! Wow he is definetly the greatest Train Runner of all time!!! As a matter of fact me'n Bovice ran train on your sister last night!!!"

Van: "Excuse Me?"

Orpheus: "Bitch, EXCUSE ME!!!!"

Train Runner by CHOWS April 6, 2008

trailrunner 

4x4 built to go fast on and off road and be able to climb some bad ass rocks.

Damn that trailrunner was lifted and fast as ballz

trailrunner by yuppp April 30, 2006