OK, so I was a bit bored of time trialling in a hog all the time...
All of these times show how fast you can complete a lap when
legally(!) walking the map - so that means there's no infinity time shown* as you can never walk that map. Often teleports have been used and the route may sometimes even be only possible with an overshield or good jumping techniques.
Anyway, here goes - format is map, (rough description of route).
Gephyrophobia (round top, picking up overshield, jumping down at 4th nav):
Blood Gulch (use tele at blue base):
Timberland (tracking the hog route all the way):
Danger canyon (tunnels used after both base navs):
Ice fields (teles taken to get to centre when going from blue --> red and red--> score):
Death Island (same route as when driving):
Sidewinder (tele's used - note that this is the way you have to do it in scrims anyway):
Why not try and beat these yourself? On second thoughts, maybe not a good idea...
The other thing this little exercise suggests is that a hog is only about 3 times faster than a Spartan on foot! (From death island time, when the hog route and walking route are pretty well exactly the same).
*for the record, it took me 284 seconds to walk infinity normal navs without using tele's.