Our comprehensive triathlon calendar / triathlon finder listing for triathlons in United States and Washington (WA). Find Full, Half, Olympic, Sprint distance triathlon races and more here.
| Triathlon Event (36) | City | Month | Map |
Race Type(s) |
| Issaquah RainMan Indoor Triathlon | Issaquah | February | | Indoor | Relay | | |
| Lost River Winter Triathlon | Mazama | March | | Winter | Relay | | |
| Seattle RainMan Indoor Triathlon | Seattle | March | | Indoor | Relay | | |
| Tacoma RainMan Indoor Triathlon | Tacoma | March | | Indoor | Relay | | |
| Haselwood Rainman Indoor Triathlon | Silverdale | April | | Indoor | Relay | | |
| Redmond RainMan Indoor Triathlon | Redmond | April | | Indoor | Relay | | |
| Dilettante Women's Triathlon | Federal Way | June | | Women | Relay | | |
| Five Mile Lake Sprint Triathlon | Federal Way | June | | Sprint | Relay | | |
| Issaquah Triathlon | Issaquah | June | | Sprint | Kids | Relay | | |
| Moses Lake Triathlon | Moses Lake | June | | Olympic | Sprint | Relay | | |
| Vancouver Women's Triathlon | Vancouver | June | | Women | | |
| ChelanMan Multisport Weekend | Chelan | July | | Half | Olympic | Sprint | Relay | | |
| Ellensburg Sprint Triathlon | Ellensburg | July | | Sprint | Relay | | |
| Ironman 70.3 Lake Stevens | Lake Stevens | July | | Half | Relay | | |
| Ocean Shores Big Weekend | Ocean Shores | July | | Half | Olympic | Sprint | Kids | Relay | | |
| Tiger Tri | Colville | July | | International | | |
| Valley Girl Triathlon | Liberty Lake | July | | Women | | |
| Valley Kids Triathlon | Liberty Lake | July | | Kids | | |
| Valley of the Sun Triathlon | Yakima | July | | International | Relay | | |
| Whisky Dick Triathlon | Vantage / Ellensburg | July | | International | Relay | | |
| XTERRA Vashon Island | Vashon Island | July | | Xterra | Relay | | |
| Apple Capital Triathlon | Wenatchee | August | | Olympic | Sprint | Relay | | |
| Beaver Lake Triathlon | Sammamish | August | | Sprint | Relay | | |
| Bonney Lake Chamber of Commerce Triathlon | Bonney Lake | August | | Olympic | Sprint | Relay | | |
| Danskin Triathlon Series - Seattle | Seattle | August | | Women | Relay | | |
| Federal Escape Triathlon | Federal Way | August | | Olympic | Sprint | Kids | Relay | | |
| Heart of the Sound Triathlon | Vashon Island | August | | Sprint | Kids | | |
| Lake Meridian Triathlon | Kent | August | | Olympic | Sprint | Relay | | |
| Lake Sammamish Triathlon | Issaquah | August | | Sprint | Relay | | |
| XTERRA Black Diamond | Black Diamond | August | | Xterra | Relay | | |
| Black Diamond Triathlon | Enumclaw | September | | Half | Olympic | Sprint | Relay | | |
| Grand Columbian Super Triathlon | Grand Coulee | September | | Full | Half | Olympic | Special | Relay | | |
| Lake Stevens Triathlon | Lake Stevens | September | | Olympic | Sprint | Relay | | |
| Seattle Escape from the Rock Triathlon | Mercer Island | September | | Sprint | Relay | | |
| Titanium Man Olympic Triathlon | Kennewick | September | | Olympic | Relay | | |
| TriFreaks Kirkland Triathlon | Kirkland | September | | Sprint | Relay | |