Saturday 18 May 2024

Three hearts at the bandstand in the spa park of Radenci, Slovenia (Copyright © 2020 Hendrik Böttger /


The Maraton treh src, or Three Hearts Marathon, is the biggest running event in the eastern part of Slovenia.

Held annually in May, it attracts around 2,000 runners to the small mineral-water-producing spa town of Radenci which sits on the right bank of the Mura river near the border with Austria.

The event features races for all ages and levels of runners:

  • 300m, 600m, 1km tek (kids' races)
  • 5km tek (5k run)
  • 10km tek (10k run)
  • 10km nordijska hoja (10k nordic walking)
  • 21.1km polmaraton (half marathon)
  • 42.2km maraton (marathon)

Starting and finishing at Zdravilišče Radenci, a spa resort with thermal indoor and outdoor pools, the half and the full marathon cross the border into Austria for a visit of Bad Radkersburg, another spa town offering, like Radenci, relaxation in thermal pools.

Marathoners run a long loop through fields and villages in Slovenia and Austria, crossing the state border four times.

The route is gently undulating with a difference of about 35 metres between the lowest and the highest point on the course.


Map of the venue:


42. Maraton treh src:


  • 18 May 2024 (Saturday)

Event website:


Number of finishers:

  5km 10km 21.1km 42.2km
2023 596 577 630 123
2022 523 635 596 134
2021 --- --- --- ---
2020 --- --- --- ---
2019 790 1,130 858 181
2018 925 1,344 1,089 242


No guarantee is made as to the accuracy or thoroughness of the information on this page.