Thanks to Dan Olsen we now have the coordinates of the Lakeland race. They are listed at:

     http://www.aircraftspruce.com/news.html

The length of the Lakeland 100 mile race is 76.1 nm or 87.5 statute miles.
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Lorn H. 'Feathers' Olsen, MAA, DynaComm, Corp.
248-478-4301, mailto:lorn@dynacomm.ws
LNC2, O-320-D1F, N31161, Y47, SE Michigan