Dalmacija Ultra Trail SEA DUT is a 56 km trail race held on October 10, 2026, finishing on the main beach in Omiš — a historic pirate town at the mouth of the Cetina River canyon, Croatia. The course covers 56.1 km with 2,737 m of gain (48.7 m/km) across five mountains (Biokovo, Mosor, Omiška Dinara, Primorska Kosa, Kozjak), limestone karst ridges, ancient fortress ruins, and the Cetina River canyon, with Adriatic Sea views throughout.
The Dalmacija Ultra Trail course averages 14% on all uphill sections — steeper than 70% of measured races in the DTR database — with 5.2 km above 20% gradient on exposed limestone terrain. Maximum climb gradients reach 67–84%, signalling genuine scrambling on karst rock faces. The final descent drops 681 m over 4.2 km at −16.1% average into Omiš.
Dalmacija Ultra Trail entry costs €1.60/km (€90 from March 2026; €100 from June 2026 + €3.78 admin fee). Split Airport (SPU) 31 minutes away. Founded 2016 / 11th edition 2026. 144 finishers 2025. Suits technically strong trail runners seeking a destination-race experience on the Croatian coast.