Just spoke the UK distributor for ya, numbers on the link here: http://www.canyon.com/_en/roadbikes/bike.html?b=3293

Told him my height of just under 5'10" and he said the 56/m is the perfect size for me. His comments were to forget the '53' '56' etc and just focus on the 'XS' 'S' 'M' 'L' 'XL'.

Hope that helps, now just order it