Pathlete

An ELITE poseur, who rides slow, shoals at lights, and generally blocks access to the path, except during specific, imaginary start and finish lines (known only to the Pathelete) where his or her (always his) primary goal is to display his or her (again always his) supremacy in breaking away

Reference
Comes from combining the words path (as in bike path) and athlete.

Forum Introduction

 * Strava Rivalry? http://bikearlingtonforum.com/showthread.php?p=22624#post22624

Links

 * Urban Dictionary: Pathlete http://www.urbandictionary.com/define.php?term=Pathlete