Originally Posted by
funbob
If you plan on using it with a Garmin map product like City Navigator, the 605/705 would perform comparably to any of their traditional mapping GPS's with turn by turn guidance. However, even the 605/705 still has the 100 waypoint limit. Unless you're doing a really intricate route, I'd find it hard to believe you'd run into that limit.
The problem is the way that MapMyRide and similar route generators work. When in "follow roads" mode, they generate hundreds of intermediate points, and they don't distinguish the points that actually mark intersections from those that just follow the road.
I downloaded a typical route GPX file. The route is 49 miles long, and the cue sheet has 45 turns on it. The GPX file consists of a single <trkseg> with over 900 <trkpt> elements. Each trkpt has "lat" and "lon" attributes, and nothing else (no labels at all).
I'm sure I could manually construct a route in the GPS from the 45 turns, it just seems rather tedious to do this, and I was hoping for an automated solution. Is there something in the Garmin software that can do this for me?