When the Santa Ana River Trail ends take Green River (cross over 91) . Make a left on Palisades and then a left on Serfas Club. Just before the freeway make a right on the frontage road. This will put you on 6th. Stay on 6th and it changes to Magnolia. Stay on Magnolia until you get to Arlington and make a right. Follow Arlington as it crosses Allessandro it changes into Chicago. Then make a right on Central. Just before the 215 make a right on Sycamore Canyon. Make a left on Box Canyon road (cross the 215). Follow Box Canyon and it changes to Ironwood. Make a left on Redlands. Make a right on San Timoteo and follow it into Beaumont. It becomes Oak Valley and dead ends at Highland Springs. Make a right. Then make a left on 6th/Ramsey. This will take you to the ramp to I10. Just before you get on the freeway see if you can find an opening that will allow you to walk your bike onto a frontage road that parallels I10. Follow this frontage road (its a bit rough in spots) until you have to get on the I10. You are at the ramp for the 111 into Palm Springs.