| Irish Cyclo-cross 2017/2018 | ||
| Age group | Year of birth | Combined category |
| Under 8 | 2010-2011-2012 | |
| Under 10 | 2008-2009 | |
| Under 12 | 2006-2007 | |
| Under 14 | 2004-2005 | |
| Under 16 | 2002-2003 | |
| Junior | 2000-2001 | |
| Espoir | 1996-1999 | Senior 1979-1999 |
| Senior | 1979-1995 | |
| M40 | 1969-1978 | |
| M50 | 1959-1968 | |
| M60 | 1900-1958 | |