Well, if you don't want to wait that long, you can always set it to only run a particular test at a time. To do this, go into configuration (press C) then choose "Test Selection" (Press 1), then do "Select Test" (Press 3) then just choose which test want to do, hit Enter, and then "Continue" (Press 0). Then it'll keep running whatever test you chose. Thus, you only need to check back on it periodically for errors and to see how many passes it has done. Repeat for whatever tests you want.