24 hores d'Ultrafons en Pista de Barcelona

This long-running Barcelona track ultra pairs a serious individual 24-hour field with a fundraising mission for medical research. The individual race is distinct from the relay, 12-hour, and 6-hour events around it, and its limited allocation typically disappears quickly.

Individual runners accumulate distance for 24 hours on the 400-meter Joan Serrahima athletics track, starting and finishing at noon. Direction changes every three hours, and the final partial lap is measured. Support is always close, but repetition and a full night of running make pace control and foot care the main competitive problems.

Barcelona is usually mild in December, but the outdoor track can still bring a cool night, damp air, and occasional rain. Runners need a clothing plan that works across afternoon sun, overnight cooling, and the second morning.