Southern California - Safest route from Fullerton to SART or San Gabriel River Trail?

Pretty self explanatory - I live in SW Fullerton and since I hate having to drive somewhere to ride, I usually just do loops up through Carbon/Brea Canyon and then through La Habra Heights and La Mirada and back home.

Does anyone else ride from Fullerton and know the most bicycle-friendly routes to get to the Santa Ana river trail to the south or to the San Gabriel river trail to the north?

The most direct route would be South on Glassell / Kramer to the River Trail..

^ This.

Or you can head west on Rosecrans to go down Coyote Creek Trail, which picks up the lower San Gabriel River Trail. I've done this trail the past couple of weekends.

Coyote Creek Trail Info (http://www.labikepaths.com/Coyote.html)

I live near Basque and Commonwealth. I ride Wilshire east to Acacia south to La Palma. I ride Wilshire east to acacia north everyday to work in Brea. To go to Coyote Creek I have ridden out Artesia and also Orangethorpe.

The OP said:
I live in SW FullertonThe first responder said:
The most direct route would be South on Glassell / Kramer to the River TrailUmmm, not really. Not from SW Fullerton, which isn't far from where I live in Anaheim (La Palma/Brookhurst). Usually, I drive to the RJ Noble quarry parking on Lincoln at SART/Batavia or to the Rampart access (Orangewood and 57, near the firetraining facility, south side of the stadium). Or I'll drive to Rynerson or Liberty Parks (Lakewood and Cerritos respectively) to ride SGRT. But lately I've been parking over at Maxwell Park in Anaheim (Haskett branch of the Anaheim Public Library, Broadway between Magnolia and Dale) and riding from there to either trail. And even up to the fairly new (and short, so far) Whittier Greenway. I even use Maxwell Park as a base for my every-couple-of-weeks trip to the Alamitos Bay farmers' market.

ETA: lotsa nice huge old trees to park under at Haskett if you get there early enough on the weekends to beat the soccer traffic

http://www.octa.net/pdf/bwmap_full.pdf
http://www.metro.net/riding_metro/bikes/images/la_bike_map.pdf

These are the maps I use when I want to try some different roads. They don't show everything, but they are a good starting point for using Google Earth, Google Maps or Bing Maps.

Thanks for all the suggestions. Hope to see you guys on the road. I'm the one on the red Cervelo SLC who's almost always riding solo!