5k Entry Fees and Medical bills

I ran my first 5k of 2015 on March 14.  I plan to run 10 more 5k's throughout the year, at least, and since I also work fulltime, a friend suggested I start this to help pay the entry fees for my upcoming 5k's.  So far I have Running with the Cows May 9, Arrowhead 5k May 23, and the Glow Run 5k June 27.  Any help would be greatly appreciated.