Does Garmin give you credit for the vertical distance you run?

If you’ve ever looked closely at a topographical map, you might notice something odd. It’s not actually odd, because there is no other way to make the map, but it does cause some interesting problems. Take a look at this close-up of the USGS map of Half Dome, in Yosemite National Park. Half Dome’s peak […]

The Basics: Tweaking the GPS display for races

Last week at the 7 Bridges Marathon in Chattanooga, the unthinkable happened to my friend Todd: The battery died on his GPS trainer, 15 miles into the race. He had been running at near PR-pace, but without the feedback he was accustomed to, it was difficult for him to adjust, and he ended up missing […]

Adjusting for GPS elevation troubles

This weekend, on a whim, I decided to run the Bridges Half Marathon in Chattanooga. It turned out to be a pretty good whim, because I set a PR in the race! As always, I like to take a look at my GPS record of the race afterwards to see if I might have done […]

The Basics: How far did I run?

30 years ago when I first started running, just about the only way for me to know for sure how far I had run in a session was to run on a marked track or path, or participate in a race. If I was just out for a casual run in the neighborhood, there was […]