Jamie Donaldson from Colorado ran in the Leadville 100 this summer, and I had the privilege of watching her finish the Burro Race at Boom Days a couple weeks prior. Not just a fast (really fast!) runner, she seems like a nice person I'd like to meet someday.
Anyway, last weekend she set an American record at the 200 km distance while competing in a 24-hour race:
My favorite part of this, beyond her amazing achievement, is how the USA Track & Field listed the distance she ran: 200,000 meters. I think I'll adopt a meter-based system for my training and race recording.