
Well I did a short flight from Orillia (J4W) to Lake Simcoe Reg'l with a fly by Orillia (Mara) CNE2 which has a closed 3000ft runway.
These locations are in Ontario, Canada...
The trip has several waypoints and not direct by any means.
However the Nav Log said 19.4nm and a duration of 8 minutes even with the waypoints added.
The trip would probably take two to three hours by land vehicle and I stretched the trip to just over a hour by doing several water touch and goes...lots of fun...

FSX and Vista
FS Water Configurator set to FSX Default
HDE Clouds
3D Lights
Location: