Making Transparent Maps for your Garmin GPS with GPX2IMG

I have had a number of questions from readers about how to get some certain trail data onto their GPS. That answer is complicated, because it depends on the trail data and it depends on the GPS you have. If the trail data you want to use is a simple track from someone’s previous ride, you can load it directly onto your GPS. Fitness GPS receivers (like the Edge models with mapping) can do a Virtual Partner based on that file and do performance comparisons and whatnot. With a mapping handheld, you get a basic navigation (it warns you if you deviate from the trail, but not much more). If that .gpx track has more track points than your GPS receiver’s track point limit, you have to reduce the number of points in the track by simplifying it (some programs allow you to do this) or by converting it to a route, which will prompt you to turn (best used on roads where turns occur at intersections, than on trails where turns often occur dependent on terrain).

Nacogdoches, TX Trails

I’m making some solid progress on the trails map for Nacogdoches, Texas.

Right now, I have all of the trail in the SFA Recreational Trails mapped, in addition to all of the Lanana Creek Trail. I have a little bit of data for the Azalea Garden, the Mast Arboretum, and Tucker Woods. I’m not entirely certain how well those areas are going to come out, because the arboretum and azalea garden, especially, have VERY dense networks of trails.

Nac Trails 5/9/2010

Another Sunday, another weekly ride. This week was much cooler than previous weeks. It was overcast and threatening to rain all day. It spat on us a little, but didn’t really rain until we finished our ride.