Here's my 2.3 acre home layout and a few courses our boys run on it.
(approx 300 feet wide x 330 feet long
1) around the home itself, can hit 20mph-ish
.
2) the figure 8 on front wildflower field area, hit's 15mph there
The top/north left /west side is the 180 hairpin where the cart rolled.
.
3) down the drive way and up the road end loop and back, can reach 28mph there
.
I'm using free iPhone app called BikeBrain for this, it's GPS accuracy seems wacky as I drove same course laps...
Are you guys using any better gps accurate app to map your trails and time/speed etc??