Here are directions to
Mendon Ponds Park from I-90 and I-390 (for those headed eastbound). For those headed westbound
here is the link. The start will be at West Lodge, which is just off Canfield Road and there will be signs posted.
The event will be Score-O format with 24 controls of varying point value and difficulty. Starts from 6-7PM (earlier if you are there and we are set up) with a 1-hour maximum time limit. And as others have pointed out it will be dark by 7:30, so please plan accordingly.