Maintaining the proper workout motivation can be challenging. The skinny bods on the Katy Trail can set off one's shame spiral in a big way. White Rock trails are a battle for turf among walkers, runners and cyclists. Now there's a new road to conquer. After years of delay, the Trinity Strand Trail is complete. Linking the Design District and Medical District, the 7.8-mile, non-motorized concrete path may one day serve as the backbone of a vibrant urban neighborhood. For now it cuts through a depopulated landscape of warehouses and office buildings — which isn't a bad thing. The level of urban grittiness is non-threatening, even pleasant, and the areas along the trail make it look like the epicenter of a coming zombie apocalypse. Nothing invigorates a run or bike ride quite like the thought of being chased by the undead.