To the beach and beyond

I've been having some trouble finding my rhythm since I got sick in February and was knocked off my running routine for three weeks. Now it's MAY and I still haven't been able to get out on the roads more than two days a week. I almost don't even look forward to my runs because instead of being "easy" I find myself struggling to find a groove and three miles seem like FOREVER.
I was hoping a run on Town Lake a couple of weeks ago would jump start my feet. Help me find my groove. But I've only run three times since then. Sigh.
I do however, only have three weeks until the Beach to Bay relay marathon. Which means I need to get up to the 4 miles so that the humidity and heat are the only thing I'm left dealing with, not the dread of 4 miles.
There's also this little matter of the Rock n Roll Marathon. I still haven't decided which event I want to run. The OCD, over-achiever, competitive side of me wants to run the whole 26.2. The sane, remembers that it may be 89 degrees, wants to set a P.R. side of me thinks I should run the half marathon. I could drop 10 pounds and run a 2:15 half marathon. Just writing 2:15 makes me think "hmm, maybe that could be the thing for me.
But for now I just keep looking at the marathon website, pulling up the route, looking at the registration page and imagining what I'll think in November once I'm in a corral ready to cross the start line.