
Self-Managed
The American Birkebeiner, the "Birkie," is North America’s largest ski race. More than 11,000 skiers from 49 states and 27 countries participate in this cross country ski marathon in the Northwoods of Hayward, Wisconsin. Birkie Festival Week attracts more than 13,000 skiers of all ages and abilities each February. All of them attend the two-day Birkie Expo and bib pick-up and a Virtual Expo with 83,000 booth visits. The Birkie is also part of the Worldloppet circuit of over 20 international ski marathon races annually, and it is slated to be the site of the World Cup in 2024.
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Brands can sponsor BIRKIE - Ski.Run.Bike on OpenSponsorship by creating a free account, browsing BIRKIE - Ski.Run.Bike'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.
BIRKIE - Ski.Run.Bike 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, BIRKIE - Ski.Run.Bike's audience includes 16K+ Instagram followers, based in Hayward, Wisconsin, 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