The 5-mile course is approximately the same each year. See the Caltopo map.

It is a mix of single-track trail and grassy surface, with a few hills but no major climbs. Depending on rainfall the creek could either be a trickle or a few inches deep. Expect your feet to get a little wet, if not from the creek than from the dew on the grass. In general, the course is fast and runnable. 

Note that the course is subject to change as trail conditions warrant or as park management deems necessary.