Aussie Josh Amberger did a 1km hill repeat workout in Boulder Canyon, CO with Kiwi Martin Van Barneveld and here is a video of their efforts, including warmup and cool down. Jimmy Seear was the very capable cameraman.
We found Josh Amberger at Interbike 2012 on a very important call.
Modeling for Timothy Carlson.
Riding outside of Boulder, CO.