The intersection of Richards Boulevard and Interstate 5 is a great place to catch a ride north out of Sac.
South West towards San Francisco, North East towards Reno
You can try your luck on Northgate Boulevard in front of the Quality Inn and the IHOP. Matt&camy had to wait about two hours to get a ride to Rocklin, but cars can definitely pull over.
There is a very good spot at the end of West Capitol Avenue for both directions on I80. Leave Sacramento, crossing the river on the Tower Bridge, heading West. Then find West Capitol Avenue which you can walk down all the way, or you can take a bus. Waiting time direction Reno was 1h15. April 2016.