A short loop hike through the North Etiwanda Preserve. There are several spurs that can be taken to see interesting items and to increase the length of your hik.
Exit 210 Fwy at Day Creek. Take Day Creek North till it turns East. Continue to follow Day Creek East. When Day Creek meets Etiwanda Ave, turn North and follow road to end of Etiwanda and park in the parking lot.
http://www.tripleblaze.com/trail.php?c=3&i=8382