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Dairy Air 5k, 10k, 13.1M Calf Marathon, Udderly Fun 2 Mile Run/Walk & HAY YOU Kids' Run! is a marathon running event held in Del Val University, Doylestown, PA on Jun 27, 2026. It is a Boston Marathon qualifier. The course offers a fast, PR-friendly route.
Trehko tracks registration status, entry fees, and deadlines for Dairy Air 5k, 10k, 13.1M Calf Marathon, Udderly Fun 2 Mile Run/Walk & HAY YOU Kids' Run! and thousands of other endurance races. Use the app to set a registration reminder and build a training plan tailored to race day.
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