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Boulder Sunset Triathlon is the largest sprint and standard distance triathlon event in Colorado. Taking place at the end on August at the beautiful Boulder Reservoir, it caters to everyone from the absolute beginner to the racing snakes looking to qualify for nationals. It is a fun filled family down out with playgrounds and the sandy beach for the kids and great racing to mom and dad.
BBSC Endurance Sports
United States
2007
1,500
2,500
Your Cause Sports
New to athlete partnerships? See how sports sponsorship works on OpenSponsorship.
Brands can sponsor Boulder Sunset Triathlon on OpenSponsorship by creating a free account, browsing Boulder Sunset Triathlon's profile, and sending a sponsorship proposal for social posts, appearances, or integrated campaigns. OpenSponsorship handles messaging, deliverables, and deal terms in one platform so you can connect directly with this event.
Boulder Sunset Triathlon is listed on OpenSponsorship and available for brand sponsorships. Brands can review campaign packages, audience details, and pricing on this profile, then submit a proposal to start a partnership with this event.
According to OpenSponsorship, Boulder Sunset Triathlon's audience includes 2K+ Instagram followers, based in Boulder, Colorado, United States. Brands can use this profile to evaluate reach, content niche, and sponsorship fit before sending a proposal.

How do you measure influencer marketing ROI when half the numbers social media gives you are vanity metrics? It is the question brands ask us most, and it came up again when I joined Massimo Marinelli on the Berkida Ventures Podcast. After more than ten years and thousands of brand deals with athletes and creators at OpenSponsorship, here is how we think about it, and the framework we use with our clients.
October 28, 2026