Three Hearts Marathon 2025

• Oldest marathon in southeastern Europe, held annually since 1981.
• Flat course crosses Slovenia and Austria, offering an international experience.
• Start and finish in Radenci, Slovenia; includes timing chip in registration.
• Offers marathon, half-marathon, 10 km, 5 km, and 10 km Nordic walking.
• Provides medical assistance, bag drop, and trophies for winners.

The Three Hearts Marathon, held annually in Radenci, Slovenia, is the oldest marathon in south-eastern Europe, officially measured by AIMS/IAAF since its inception in 1981. Known for its unique course, the marathon winds through both Slovenia and Austria, crossing the border four times, offering participants a scenic race with the privilege of running in two countries. The flat and fast nature of the course makes it attractive for both beginners and seasoned runners aiming for personal bests. The event includes various distances, making it inclusive for all types of runners: 5 km (Oaza Run), 10 km (Radenska Naturelle), 21.1 km (Half Marathon), and the full 42.195 km Marathon. There's also a 10 km Nordic Walking event for walking enthusiasts. It has a rich history, having hosted the Slovenian national championships and now alternates with the Ljubljana Marathon. The welcoming atmosphere and scenic route along the river Mura create a memorable experience. Runners start at 9:00 a.m. at Hotel Radin, and the day typically features pleasant weather, providing excellent running conditions. With its historical significance, stunning scenery, and fast course, the Three Hearts Marathon is a must-consider event for marathon enthusiasts seeking a unique challenge.

Expect temperatures between 50-70°F (10-21°C) with moderate humidity for the Three Hearts Marathon in Radenci, Slovenia, during mid-May. Morning conditions start cooler, warming as the day progresses. The forecast suggests partly cloudy skies with no significant chance of rain, ideal for running.

The Three Hearts Marathon offers runners a truly memorable experience, spanning 42 kilometers with the unique feature of crossing the Slovenian-Austrian border multiple times. The course is predominantly flat, making it accessible for runners of all skill levels. As participants make their way through the picturesque countryside, they are treated to views of Radenci's historic and cultural landmarks, including its famed thermal springs, renowned for their medicinal properties.

One of the standout features of this marathon is its international route, which allows runners to enjoy the diverse landscapes of both Slovenia and Austria. While the flat terrain minimizes the physical demands of elevation changes, the marathon's length and cross-border navigation add a layer of challenge, ensuring an engaging experience.

In addition to the main event, the Three Hearts Marathon hosts various race distances, such as a half marathon, a 10K, and children's races, catering to a wide range of participants. Nordic walking and the Three Hearts March offer alternatives for those seeking a less intense yet equally scenic adventure. This event truly celebrates inclusivity, making it a highlight for runners and walkers alike.

Radenci, nestled in Slovenia's Thermal Pannonian Region, offers more than just the thrill of the Three Hearts Marathon. This charming town invites visitors to unwind and explore its serene landscapes and rich cultural offerings. Start with a visit to the Radenci Health Resort, renowned for its mineral water springs, providing a perfect spot to relax after your marathon efforts. A stroll through Radenci Park reveals a vibrant rose garden and an array of exotic trees, ideal for a peaceful afternoon.

Wine enthusiasts should not miss the Kapela Wine Fountain, where you can savor local vintages while enjoying panoramic views of the picturesque wine-growing region. For a taste of history, head to Marijin dom to delve into the story of spa tourism and the famed Radenska mineral water. The historic St. Peter and Paul Church is another must-see, offering insight into local architecture and heritage.

Culinary delights in Radenci are abundant, with opportunities to indulge in local wines and traditional dishes at nearby estates or restaurants. Whether you're exploring historical villas or taking in the natural beauty of the Mura River, Radenci promises a delightful blend of relaxation and adventure.