For Monte Rio Triathlon information/questions that pertain to: registration, entrant lists, the website,  change of address, and refunds (view refund policy first before contacting):

For information/questions regarding volunteering for the Monte Rio Triathlon:

For information regarding Monte Rio sponsorship or the expo:

For information/questions regarding the Monte Rio Training Programs:

For specific race course questions or questions that don’t fall under any of the above categories, email:

For any questions or other information pertaining to IRONMAN 70.3 Santa Rosa or IRONMAN Santa Rosa, please go to The above contact email addresses are for the Monte Rio Triathlon only.