The British Cycling Cyclocross age categories for the 2026/27 season are as follows (effective from 1st Sept 2026):

Under 8 born in 2019 or later
Under 10 born in 2017 or 2018
Under 12 born in 2015 or 2016

Youth – born 2011 to 2014
Youth – Under 16 – born 2011 or 2012
Youth – Under 14 born 2013 or 2014

Junior – born 2009 or 2010

Under 23 – born 2005 to 2007

Senior born – 2004 or earlier

Masters 40+ born between 1977 and 1986
Masters 40 born 1982 to 1986
Masters 45 born 1977 to 1981

Masters 50+ born 1976-1967
Masters 50 born 1972 to 1976
Masters 55 born 1967 to 1971

Masters 60 born 1966 or before
Masters 65 born 1957 to 1961

Masters 70+ born 1956 or earlier