Start from X. This little feature will allow you to start any course at some place other than the start. So, if you want to ride only to the top of Richter Pass of the Ironman Canada course, then figure that distance out and enter that distance into the box above the Race Now button. Then, when you are on the race screen you can either press the F1 key once to start as normal, OR as the 3,2,1,GO is counting down press the F1 a SECOND TIME to move you to this new position and restart the timer. This way, if there is a number other than 0.00 in this button, but you didn't intend to start in the middle -- you have control over whether the feature works or not. Pretty cool. Remember, you can save performance files without crossing the finish line, so you should be able to stop and save anywhere after your middle start.