NCTRaces: 15x takes place at Palmer's Landing.  It is run on the North Country Trail (the Portage Trail section).  Simply put, it is a one mile repeat every 15 minutes, until one person is left.  

 

Technically it is a last runner standing format, but any and all runners (whether running 1 mile or 126 miles) will receive a finisher award.  Awards will have a space to fill in the distance you made that year.  There are no age or gender categories, last runner standing means last runner standing.  The last runner standing will receive an additional award for winning.  

 

Palmer's Landing will be the Start/Finish, Aid Station, Crew Spot that runners return to every mile.  NCTRaces will have a basic Aid Station Set up with some food/drinks/aid, but runners are encouraged to set up their own Aid Station area, whether a tent or a car.