it's cuz your tires are narrower on your roadie (i think)

ummm look at the san dimas/covina thread... although there's a TON of hills to ride out in glendale... i think La Tuna is a good one, but yeah, i would start in glendale first... anyone from the area want to chime in? i'd be down to ride too (after work hours... when the sun stays up longer). I work in Glendale but don't know too many roads out here