Fall Equinox 2024 Marathon. Here you’ll find all the details you need to know about running the equinox marathon and relay. We’re pleased to announce that registration is open for the 2024 equinox marathon and relay.

(relay information coming soon, probably early summer 2024.). According to the old farmer’s almanac, an equinox occurs when the sun crosses the celestial equator, an imaginary extension of earth’s equator.