The Walkable City website which calculates accessability of neighborhoods now includes a bike score. I used address of Regent and agree it is a "Walkers' Paradise" but am not sure, as one who often trudges up Main and State from 400 South, that downtown is "flat as a pancake".
http://www.walkscore.com/score/51-e-100-s-salt-lake-city-ut-84111