ZAGREB21 – Zagreb Spring Half Marathon

Experience the magic of a Saturday night road race through Croatia's vibrant capital at the **Zagreb21 - Zagreb Spring Half Marathon on Saturday, March 21, 2026**. This popular city-centre event, organized by Athletic Club Maraton 2000, offers a rare nocturnal running experience as the 5km distance departs at 7:00 PM from the iconic National and University Library. Participants wind through illuminated streets, past modernist landmarks and the gentle flow of the Sava River, the city's evening energy providing an electric backdrop for personal achievement. It is an invitation to discover Zagreb through movement, under lights and open skies, in the company of runners spanning all generations.
The 11th edition maintains the event's cherished dual-weekend format, with the Half Marathon and Relay distances reserved for Sunday morning's 8:30 AM start. Yet the Saturday 5km holds its own distinct allure—a shorter, sharper shot of urban running that welcomes newcomers and seasoned competitors alike. Heineken lends its title sponsorship to a race that balances international ambition with local heart, drawing runners from across the region while remaining deeply rooted in Zagreb's athletic community. The course map, viewable on the official site, traces a fast, spectator-friendly loop befitting Croatia's premier spring road running gathering.

Registration remains open through the event website, where participants select their distance, secure their bib, and prepare for a weekend that transforms the library forecourt into a hub of pre-race anticipation and post- finish celebration. Sponsors including Keraterm and media partners Jutarnji List underscore the event's standing, while friendships with the Belgrade and Pula marathons place Zagreb21 within a proud regional running fraternity. T-shirts, medals, and the singular satisfaction of a Saturday night PR await. Book your accommodation early, charge your headlamp, and join the thousands who have made this elegant half marathon an essential spring pilgrimage. Zagreb awaits—its streets, its spirit, and its 21.1 kilometres of pure Croatian running.