A few links to a few running event sites and clubs:

Phoenix Running.  A race company used heavily by the BoR

GMC.  Global Marathon Challenges.  A site to buy SWAG once awesome running has been achieved

SVN.  A race company used heavily by the BoR

Mega Marathoners.  A club to join once awesome running has been achieved

Running Miles.  A race company used heavily by the BoR  

STE. A race company used heavily by the BoR    

Enigma.  A race company used heavily by the BoR    

Saturn.  A race company used heavily by the BoR    

100 Marathon Club.  Rob and Simon's 1st Claim running club.  Useful for finding running events

Mole Valley Runners.  Simon's local running club