A year or so ago I changed my tracklog settings to one point per second, which gave me more accurate trail mileage and ascent numbers. The problem is that most tracklogs are limited to 10,000 points, which means it rolls over to your archives in less than three hours. So you get home, try to download your track, and find that part is in the active track and part is in the track archives.
Now there are many ways to handle this, including manually merging tracks, but here is the simplest solution I’ve found. It’s no secret I’m a fan of TopoFusion (which has a fully functional free version), and even though I switched to a Mac a couple of years ago, I still keep a Windows laptop around for TopoFusion — I like it that much. One of the reasons is its awesome track download dialog, where I recently noticed the “Add more tracks from” section circled above. Note that it’s already showing the current track as downloaded.
Once you choose a part of the archive to download, they’ll also show up in the dialog, as shown below.
Now all you need to do is highlight the tracks you wish to join and choose Merge Selected. Click Highlight Selected to view the merged track on the map and then click Save Selected to save it.
Are you using a one second tracklog interval? How do you handle this issue?