I've only ever run on one track - Meadowbank - except for the odd race which has finished with half a lap of a stadium. In which case finishing the Amsterdam marathon in the Olympic stadium was quite fun
Now that you mention stadiums for finishing, then I'd have to say the feeling of finishing the Swiss Alpine mara in the stadium in the middle of Davos was something I hope to remember always. The only thing that marred it was my 310XT crashing as I finished, losing the record of all that climbing! (1800 m-ish).