Berbie Software says TrailRunner mini 1.1.9 (http://trailrunnerx.com/trailrunnermini.php) is now available in the Mac App Store. It costs US$19.99, requires Mac OS X 10.6.6 and can be found in the Sports category.
TrailRunner mini is a route planning app for runners, bikers and hikers. Based on the openStreetMap project, it lets you create, layout and modify routes using the route planner. Users can automatically download elevation data, view mile markers along a routes course, select and inspect parts of a route to learn about its profile and much more.
You can import GPX or KML files from your iPhone, GPS device or a community portal. TrailRunner mini also lets you: view mile markers along a routes course; automatically download elevation data; select and inspect parts of a route to learn about its profile; name, rate, flag, comment and colorize collected routes; and export routes as GPX files to share and follow