I've compiled a slow motion video for the purpose of technique study.
I've focused on sideways views to check how far one lands on the ski
and how backward one pushes.

These are abstracts of the Vancouver Winter Olympics pursuit 30 km,
skating part.
Featuring Bauer Legkov Hellner Olson Soedergren Vittoz.

http://www.youtube.com/watch?v=lDhz69-sU8A