Congrats on registering for the Maryland Double. That's what I did last year with the 5k and Half in Frederick and the Full in Baltimore. The Baltimore run was really nice as we went by the zoo, the Inner Harbor, Under Armour factory, before joining the half marathoners for an uphill run through neighborhoods, and a nice lake/park area before a downhill finish between Camden Yards and M & T stadium.
The Maryland Double challenge medal is very nice.
I'm still thinking about the DDD at
Disneyland to get my Coast to Coast.
Couple of obstacles to overcome: getting support from my wife to do it with me or at least let me do it, saving my pennies for another Disney trip, and
safely navigating the registration process on 2/10.
I bet it will be a blast!