"Frozen Toes"

I have an interesting situation going on with my toes. Maybe someone could shed some light on my situation. A week ago Monday I ran the Boston Marathon. That morning I wore my light trainers while waiting for a couple of hours in Hopkington to start. One thing I noticed as I began walking towards the starting line was that my toes had lost circulation from being a bit cold. Didn't think much of it at the time (didn't seem unusual). My thought was within a mile or 2 of running, my toes would warm-up and feel fine. Interestingly, my toes remained cold through the entirety of the race. Now, some 11 days later my toes are still feeling a bit numb (kind of like being outside for a few hours on a 19 degree day in tennis shoes). No real pain, but the circulation has not fully returned back to normal.

My question: Is this something I should be concerned about? Possible nerve damage? Or having run 26 miles, is this something that just might take a week or two or three to fully recover from? My legs feel absolutely fine this week, so I have been running. There is very little pain in my toes- they just feel cold, clammy, a bit tingly, and numb towards the tips. Thanks in advance for any input.