(Most of you know about this)
Tissot Timing is the official timer for most (if not all) UCI events. They post results and sometimes live data on their site:
Tissot Timing - Results -
The data goes back for several years for several events (mostly World Cups and World Championships, but other stuff like European Championships will be there, too. Events date back to 2000.
Tissot Timing - Results - CYCLING TRACK
Pay close attention. If you ever see "Analysis" next to an event, that will list the "audit" split times every 125m for an event. For example:
Also, look up top and see general info like schedule, registered teams and racers, communiques (official docs and statements)
This data is "straight from the horse's mouth" when it comes to results.