Our comprehensive triathlon calendar / triathlon finder listing for triathlons in United States and Wisconsin (WI). Find Full, Half, Olympic, Sprint distance triathlon races and more here.
| Triathlon Event (29) | City | Month | Map |
Race Type(s) |
| Bigfoot Triathlon | Lake Geneva | June | | Olympic | Sprint | Relay | | |
| Capitol View Triathlon | Madison | June | | Olympic | Sprint | Relay | | |
| Elkhart Lake Triathlons | Elkhart Lake | June | | Olympic | Sprint | Relay | | |
| Green Bay Triathlon | Green Bay | June | | International | Sprint | Kids | Relay | | |
| High Cliff Triathlon | Sherwood | June | | Half | Sprint | Relay | | |
| Lake Mills Triathlon | Lake Mills | June | | Sprint | Relay | | |
| My First Tri Triathlon (June) | Hudson | June | | Short | | |
| Pleasant Prairie Junior Triathlon | Pleasant Prairie | June | | Kids | | |
| Pleasant Prairie Triathlon | Pleasant Prairie | June | | Olympic | Sprint | Relay | | |
| Wisconsin Triterium Triathlon | Verona | June | | Olympic | Sprint | | |
| XTERRA Dairyland | Sheboygan | June | | Xterra | | |
| Door County Triathlon | Egg Harbor | July | | Half | Sprint | Relay | | |
| Ironman 70.3 Racine | Racine | July | | Half | | |
| Pardeeville Triathlon | Pardeeville | July | | Sprint | Relay | | |
| Pewaukee Triathlon | Pewaukee | July | | Sprint | Kids | Relay | | |
| Tri-ing for Children's Triathlon | Menomonee Falls | July | | Olympic | Sprint | Kids | Relay | | |
| Adrenaline Triathlon | Random Lake | August | | Sprint | | |
| Danskin Triathlon Series - Pleasant Prairie | Pleasant Prairie | August | | Women | Relay | | |
| My First Tri Triathlon (August) | Hudson | August | | Short | | |
| Oregon Kids Triathlon | Oregon | August | | Kids | | |
| Oshkosh Triathlon | Winneconne | August | | Olympic | Sprint | Relay | | |
| Pleasant Prairie Junior Triathlon | Pleasant Prairie | August | | Kids | | |
| Revolution3 Wisconsin | Lake Delton | August | | Half | Olympic | Relay | | |
| St. Croix Valley Triathlon | Hudson | August | | Olympic | Sprint | Kids | Relay | | |
| Burrito Union 5 & 10 Hour Triathlon | Superior | September | | Special | Relay | | |
| Devil's Challenge Triathlon | Baraboo | September | | Sprint | Relay | | |
| Ironman Wisconsin | Madison | September | | Ironman | | |
| Sugar River Triathlon | Belleville | September | | Sprint | Relay | | |
| TriRock Lake Geneva Triathlon | Williams Bay | September | | International | Sprint | Relay | |