This is not advanced human kinetics here. The easiest way to run an extremely fast race is to make sure you are always heading downhill -- not a sheer drop, but a nice, steady decline in elevation. And the nicest place to do that in the Denver area, by far, is the Evergreen Town Race, this year to be held on Sunday, August 6. Both the five-kilometer and ten-kilometer courses wind -- downhill, natch -- along the highly scenic Upper Bear Creek Road, past some of the most sumptuous mountain mansions you are ever likely to lay eyes on. Of course, they'll all be a blur because of the high velocity with which you will be passing them.

Readers' choice: Bolder Boulder