Had a look at a site called Nearmap which gives very clear images of Melbourne and other parts of Australia.
There is a measurement tool you can use for distance so I thought I'd see what the length and width of the various grounds are..not sure how accurate the tool is but it does give some idea of the difference between grounds.I went from the boundary lines..not the fence lines
In alphabetical order. Length x width
Bendigo: 162 x 116
Box Hill: 154 x 142
Casey: 158 x 130
Coburg: 154 x 132 and Highgate reserve 163 x 139
Collingwood: 160 x 131
Frankston: 170 x 105
Geelong: 171 x 115
N.Ballarat: 159 x 137
N.Blues: 159 x 138
Port: 152 x 125
Sandy: 150 x 117
Werribee: 166 x 117
Willy: 155 x 128
Windy Hill: 152 x 125
Whitten Oval: 161 x 123
and for good measure..
MCG: 162 x 140
The things you do when you're bored on a Saturday arvo...
