For GPS, can try this - I think the format is proprietary though:

http://fugawi.com/docs/mapstreetframe.html

On Tue, 16 Nov 2004 20:26:35 -0600, Joel Walker <jwalker17@earthlink.net> wrote:
> > Can anyone recomend road/topo maps of Canada that are
> > similar to the excellent DeLorme Atlas/Gazetteer maps?
> > The Delorme maps are highly detailed, and usually
> > pretty accurate, but they don't seem to make them for
> > Canada.
>
> you can use some NOAA low-altitude pilotage charts for aircraft. they
> have a lot of the roads on them (but not city streets), even some of
> the more prominent side roads. and lots of features and altitudes. not
> as good as delorme or road maps, but possibly adequate in the wide
> open up there.
>
> check with www.sportys.com/takeoff/ ... click on Pilot's Shop, then
> scroll down on the left to Charts, Aviation.
>
> then on Canadian charts.
> and take your pick. there's one for the alaskan highway ...sort of a
> strip map along the road. but that might be in the Alaskan chart
> section.
>
> anyway, the ones you want are the en-route low-altitude charts.
> but to find out which ones you want/needs, go back out to the Charts,
> Aviation and click on the general enroute low-altitude charts. it has
> a diagram of which chart numbers cover which area. the charts are in
> pairs, one map on one side, the adjoining area on the opposite side of
> the map. kinda hard to work with sometimes, but ok.
>
> for $6/map (two charts), it's not soooo bad. ;)
>
> hope it helps. good luck!
> joel
>