The longest clip I made was the start of the race and that was 60MB.
What I learned was that posting them is a bit of a pain. I tried Tinypic.com first, it hung about halfway through loading a 40MB file. Then I went to PhotoBucket. It flaked out a couple of times but eventually worked. Takes awhile to upload them as well.
May have to get daughter to 'splain it. She's got one of the fancy ones, don't remembr the number, but she has done them before.