This is a 5-6 mile run starting near Golden Hill Park - I have a basic loop in mind but it can be added or subtracted to in many ways, as you wish. The basic loop starts at Golden Hill Recreation center and goes down golf course drive, down into Switzer Canyon, 28th to Upas, then a small loop on the west side of Florida Canyon, and back to the east side all the way back to the lot. Mixed trails & road. Park next to the Golden Hill Recreation center (2600 Golf Course Drive) on the small lot or across the way on the gravel. Look for a bunch of goofy runner-types wandering around. Hope to see you there !