What age categories does Nordiq Canada use for racing?

Nordiq Canada's Competition Model sets these racing categories and ages:

At Tier 1 events you must register in your date-of-birth age category. Senior, U23 and U20 together make up the Open category.

Year of birth: the latest published year-of-birth table is the one in the 2025-26 Nationals package: U16 2010 and 2011, U18 2008 and 2009, U20 2006 and 2007, U23 2003 to 2005, Senior 2002 and before. The Competition Model also encourages organizers to show year of birth on results and to recognize athletes by year of birth in the younger categories.

Sources: Competition Model https://nordiqcanada.ca/wp-content/uploads/Competition-Model-Oct-9-2020.pdf ; 2026 Ski Nationals Tech Package, section 4.1 https://nordiqcanada.ca/wp-content/uploads/2026-Ski-Nationals-Tech-Package.pdf ; Tier 1 package