December IRONMAN races
7 upcoming races with a start date in December (any year). Races with an unannounced (TBD) date are omitted from this month list.
The 7 races on this page are 2 full IRONMAN and 5 IRONMAN 70.3, in 5 countries on 3 continents; North America has the most (3). All of them are in December 2026.
Listed average water temperatures range from 57°F (14°C) to 77°F (25°C). 6 of the 7 races with a listed water temperature are at or below 76°F (24°C), where wetsuits are usually allowed. The most common swim is bay (3), followed by lake (2) and ocean (1).
- IRONMAN Oman — December 5, 2026, Muscat, Oman · IRONMAN
- IRONMAN Western Australia — December 6, 2026, Busselton, Australia · IRONMAN
- IRONMAN 70.3 Western Australia — December 6, 2026, Busselton, Australia · IRONMAN 70.3
- IRONMAN 70.3 La Quinta — December 6, 2026, La Quinta, United States · IRONMAN 70.3
- IRONMAN 70.3 Veracruz — December 6, 2026, Veracruz, Mexico · IRONMAN 70.3
- IRONMAN 70.3 Bahrain — December 11, 2026, Manama, Bahrain · IRONMAN 70.3
- IRONMAN 70.3 Florida — December 13, 2026, Haines City, United States · IRONMAN 70.3