Solution: in network tracks mode, select a range of objects and Edit > Copy these. The clipboard now contains GPX fragments of these items. You can paste that into a second TrailRunner document or into any text file.
Tip: you can also use this technique to give parts of your network of tracks to a friend for that he/she can import these segments.
Using Shortcuts, many functions of TrailRunner can be accessed in a fast and easy way.
Scrolling the map
With the TrackPad: track with two fingers. With the keyboard: all arrow-keys like ↑ and ↓. Alternatively Hold the space-bar and klick-drag with the mouse.
Zooming in and out
With the keyboard: hold ⌘ ↑ and ⌘ ↓ or ⌘ + and ⌘ -. With the TrackPad: hold ⌥ and track with two fingers up and down. While you use the hand-tool double-click to zoom in or ⌥ double-click to zoom out. If the map is the active view (last click was there), then ⌘ 1 to ⌘ 9 zoom from very high detail to a world overview.
Scrolling along a course
Click into the elevation chart, use ⌘ ← and ⌘ → to scroll along the course
To open the information pane for a way-point, double-click onto a way-point.
Closing lay out operations or starting secondary modes
While you create a track or route, double-click to close the process. If you create a track and double-click onto a way-point to close the track, a new track operation will start from there. While you create a route, click somewhere in the map to start a secondary create track mode. As soon as you close the track, it will be added to the route.
To change what's displayed in the track labels, ⌥-click somewhere in the map. To change the background maps, right-click to open the context-menu.
While you create a track or route, press the backspace key to remove the last element added by the operation. While you create a track or route, press the ESC key to abort the operation.
If background maps are currently loading, abort the process by pressing ⌘ -. If a route animation should be aborted, just click somewhere in the map.
While you create a route, you can't add tracks more than once while using the shortest path mode. To force add the track directly click on it.
In the Import Workouts pane ⌥-click onto an entry to check or uncheck all other entries.
a) The GPX file you import is actually a recorded workout of your own (possibly containing heart-rate data), so it's an activity.
b) The file contains a route created by someone else and you want to add it to your own list of routes.
c) You are interested in the tracks and way-points contained in the file and you want to merge them into your network of tracks -- to be used in future routes you create.
Solution: when you import a GPX file, TrailRunner asks you if the file is to be imported as an activity or a route. Chose either option.
When you want to import the waypoints only, go to the Document Toolbar > Locations and import the file there.
Tip: For a better conceptual understanding of TrailRunner and the difference between tracks, routes and activities, take a look at the TrailRunner QuickGuide Tutorial
Background: TrailRunner is more or less two applications in one: on the one hand a route planning application managing a personal network of tracks and on the other hand a journal for your sport activities. For your better understanding, please take a look at the TrailRunner QuickGuide. The differences should be obvious after you have read it. If not, please be so kind to let me know what you do not understand so I can improve either the QuickGuide or even TrailRunner.
> QuickGuide Tutorial