Not far from the top of Heartbreak Hill in Boston, as my pace was as slow as it could be and still be called running, a spectator called my number and yelled, “You Can Do It!  Go!”  Her face is burned on my brain today.  Six years later.  Races wouldn’t be the same without the spectators and their cheers and signs.  Humorous signs are around every turn … “Call a Cab – it’s Faster”, “Daddy, did you Pee your Pants?”, and “Feeling good?  Enjoy it – the feeling will pass” are some of my favorites.  There’s encouragement, too … “Last is the Slowest Winner” and “He who Starts the Race is not the Same as he who Finishes it” are stand-outs.  With the exception…