Wow! I just read about Mavis Hutchison, South African ultra-runner, who is in her eighties. Today is the anniverisary of her 1978 run across America. That's right, the whole country.
Here's the article in Runner's World, with a super-cool photo of her in her racing singlet. I'm printing this one out and putting it on my wall of inspiration at work.
Run on, Mavis!