4 race days · Sea— Croatia

UltraSwim 33.3 #12 Croatia 2026 — Hvar

May 15 – 18, 2026
Last edition date
Distances from 16.6km to 33.3km
🚩Staged swim
Awaiting confirmation of the next edition

About the race

UltraSwim 33.3 in Croatia is a 33.3km open water swimming challenge spread over 4 days and 6 swims. The course takes swimmers from Stari Grad to Hvar Town, passing through secret bays and islands. It is designed for swimmers looking to step out of their comfort zone, with options for different experience levels including a non-competitive 'half Channel' 33.3/2 build and an ultimate 22.2/33.3 non-stop ultra marathon add-on.

Course

16.6 km

Part of the 'BUILD' format: a non-competitive 4-day event covering approximately 17km total, with individual daily swims capped at 5km.

33.3 km

The 'CLASSIC' format: 33.3km total distance over 4 days with 6 swims. Includes two 2.3km channel crossings and a marathon-distance day (10-11km).

Awards

Event is described as non-competitive for the 'BUILD' format; finisher medals provided.

Aid stations

Daily boat and kayak safety cover provided.

Previous editions

Useful info

Multi-day event (May 15-18). Formats: 33.3km (Classic) or 22.2km (Build). Wetsuit optional. Includes logistics, hotels, and support. Registration via official website with a €500 deposit. ULTRA, ULTRA+, and ULTIMATE packages available. Pre-race briefing and optional 2-day preparation camp.

How to get there

Split Airport (SPU) is 70km away. Reach Split port (30min by bus/taxi), then take the Jadrolinija ferry to Stari Grad (2h). On-site, move around by foot or bike. Public parking available near the port and historic center. Car recommended only if exploring the island of Hvar.

✈️ Search flights to SPU

UltraSwim 33.3 #12 Croatia 2026 — Hvar

Where to stay

The event provides accommodation at local hotels, ranging from converted historic stone houses to seaside properties with direct harbor access. Most options are situated within walking distance of the start lines in Stari Grad. Prices for the full four-day package, inclusive of half-board, generally fall within the €1,500–€2,500 range depending on the service level (ULTRA to ULTRA++), which includes sports massages and logistical support. Twin-shared rooms are the standard, though single occupancy upgrades are available for those seeking additional privacy during the multi-day race format.

Things to do nearby

Beyond the swim, the island offers deep engagement with its maritime and agricultural past. Visitors often spend afternoons exploring the UNESCO-listed stone field systems or hiking the ridge paths that provide a panoramic view of the channel. The town of Hvar features stone-paved old quarters and harborside bistros serving local Dalmatian wine and seafood. For active recovery, kayak and SUP rentals are widely available for exploring the Pakleni islands, while those interested in antiquity can visit the archaeological remains of the Early Christian basilica mosaics located near the harbor.

Swimmers

What to see around

1. Stari Grad Plain (UNESCO): cycling through ancient vineyards. 2. Petar Hektorović Fortress: Renaissance architecture. 3. Maslinica Beach: swimming in crystal-clear waters. 4. Hike to St. Nicholas peak: trekking with panoramic views of the archipelago. 5. Hvar Town: nightlife and Spanjola fortress.

Other races by this organiser

Comments

Transparency: some links on this page (stays, flights, experiences, gear) are affiliate links — if you book or buy through them, Omniathlon may earn a commission from the partner at no extra cost to you. As an Amazon Associate we earn from qualifying purchases.