This has been a 600 acre public park since the 1990s, and is mainly a rowing facility. But there’s a nice path around the lake that makes for a good 5k+ loop. The eastern side of the manmade lake features a dedicated pedestrian/cycle path along a fairly busy road, while the western side is more bucolic.
The park is 8 miles east of downtown. Conveniently located near I-75 and Town Center mall.