JBL Triathlon Sieraków

JBL Triathlon Sieraków takes place in Sieraków, Poland’s Wielkopolskie region, on the last weekend of May. This timing is considered by many Polish triathletes as the start of their domestic season. Klub Sportowy Tri Tour organizes this event, offering multiple distances: 1/2, 1/4, and 1/8 triathlons, alongside Aquabike and relay options. The primary middle-distance race follows the standard 1.9 km swim, 90 km bike, and 21.1 km run. The 1/8 distance comprises a 475 m swim, a 22.5 km bike ride, and a 5.275 km run. The event is based at Ośrodek Wypoczynkowy Słoneczna in Sieraków. The middle-distance bike course features approximately 590 m of elevation gain. Participants travel from all over Poland, including Age Group athletes, relay teams, and those aiming for national-level achievements in the half-Ironman distance.