BTW I have never done the light rail thing, so I assuming by my investigation of the light rail site I just get on that gold line and it will get me back up here to Folsom --- do I have to switch rails or just stay on that one? It looks like I just get on Gold LIne and it takes me home
Yes, the Gold Line will take you all the way back, but watch out because only every other train goes all the way to Folsom. The rest stop at Sunrise. The Folsom-bound trains leave 2 minutes before the hour and half hour on Sundays (until 6:30 PM).
If you haven't done light rail, you should probably know the rules for bikes:
Bikes on RT Basically, 4 bikes are allowed on each car (there will be 2-car trains on Sunday), two in front and two in back, except none are allowed in the front of the first car. They rarely enforce these rules unless the trains are really crowded, as there are frequently 4 bikes at each end of each car. The newer cars have bike hooks with fold-up seats. Most people don't use them because they are hard to use with mountain bike tires, and because you actually take up more room if you use them than if you don't. But if you're riding from end to end as you will be, it's worth using the hooks and not having to hang onto your bike for 55 minutes.
Don't forget to bring a snack for the ride -- and eat it. Thirty miles will wipe you out if you have nothing but water along the way. And while there are water fountains along the trail, there aren't that many, so don't pass them up with less than a half-full bottle.
Make sure you know how to follow the trail from Discovery Park to Old Sac. Technically, the ARP starts at Discovery Park. I'm not sure what the stretch along the other side of the river to Old Sac is called (I think the Two Rivers Trail).