The ARRL VHF/UHF Century Club (VUCC) is awarded for contact with a minimum number of Maidenhead grid locators per band as indicated below:

50 MHz, 144 MHz and Satellite - 100 Grids
222 MHz and 432 MHz - 50 Grids
902 MHz and 1296 MHz - 25 Grids
2.3 GHz - 10 Grids
3.4 GHz and up - 5 Grids

For anyone who is close to achieving any VUCC with attainable but inactive grids close by, let me know and we can see if I can get the rover over your way for this summer.   My rover can run 6m through 10G.  

73, Jon
W0ZQ