You can pretty much park anywhere.  View map of locale below.  We are at southside of park near E River Rd Entrance.

Saturday, June 19th AND Sunday, June 20th at Southern End of Genesee Valley Park (Map of Location) - East River Rd entrance area

About Genesee Valley Park:

Genesee Valley Park is a Fredrick Law Olmsted-designed park that is dominated by three intersecting waterways, Red Creek, the Genesee River and the New York State Barge Canal. 

At 800 acres, the park is an ideal access point to a major network of trails along the river and canal as well as the route 390 bike trail and the Genesee Valley Greenway. Also included in the park are softball diamonds, multi-use/soccer fields, a cricket pitch and two 18 hole golf courses.

The Start & Finish are on the South Side of the Park by the East River Rd Entrance by Tupelo & Hawthorne Lodges.  You can enter via Moore Road as well.  Map of Park  Park Information