I have a...
Model Name: Mac mini
Model Identifier: Macmini2,1
Processor Name: Intel Core 2 Duo
Processor Speed: 1.83 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 2 MB
Memory: 2 GB
OSX: Mac OS X Lion 10.7.4 (11E53)
Sorry, but I couldn't get TrailRunner 1.6v240 to work at all. From the very start, the spinning "busy" wheel icon in the middle of the map wouldn't stop spinning. I could only change the map's location and zoom. I could not make any kind of route or changes. I waited several minutes for it to stop. It never did.
Maybe I should have waited an hour or two for it to initialize. I don't have the time to wrestle with apps. Even if they are free, my time isn't.
I gave it 1/2 star for being free, 1/2 star for loading, but removed 1/2 star for wasting my time by not working at all.
Obviously it works for other people. Congratulations. But, it eludes me.