6 Nations 2025 Wiki. The guinness six nations fixtures 2025 comprise 15 games across 5 rounds. As part of this calendar revamp, the six nations championship is set to undergo a reduction in duration, from seven weeks to six, starting in 2026.

The 2025 six nations championship will start on 31 january 2025 and conclude on 15 march 2025. Ireland’s flanker peter o’mahony lifts the six.