The trail can be found on the other side of the football field on either endzone.
From Downtown Charlottesville; take Preston Ave/Rugby Rd North out of town; Turn Right at Dairy Road; Left at St. Annes Rd.; Slight Right onto Grove Rd; Then a slight Right on to Concord Dr.; then you can park in the school parking lot.
http://www.singletracks.com/item.php?c=1&i=3252