Radenci, Slovenia · 42.195 km road marathon
Three Hearts Marathon 2027
Saturday 15 May 2027
A flat road marathon from Radenci that runs through Austria for about 7.5 km, with no finishing limit but a 2 h 30 check at Petanjci.
Three Hearts Marathon at a glance
- Start
- 09:00, one start with the half marathon, in front of Hotel Radin, Radenci
- Finish
- Beside Hotel Radin, Radenci
- Course
- One flat course, the first 19 km shared with the half, then a village loop
- Elevation
- Between 192 and 216 m above sea level
- Time limit
- No overall finishing limit published
- Cut-offs
- Petanjci, about km 19, within 2 h 30 (2026 rule, basis not stated), or you go to the half finish
- Entry
- Not yet open for 2027. In 2026: 40 euro from 14 October, rising to 50 euro, 70 on race day
- Bib pickup
- 2026: Ljubljana, Maribor, or Radenci on Friday 13:00 to 19:00 and race morning 07:00 to 08:30
- Aid stations
- Every 2.5 km, with toilets at four points
Checked against the organizer's pages on 24 September 2026. Facts for the next edition can still change; the organizer's page is the final word.
Three Hearts Marathon course map and elevation
One flat course, the first 19 km shared with the half, then a village loop. Map, elevation profile and 3D flyover.
› running direction two lines: out and back on the same road race kilometresCourse: TrailSplits reconstruction; map data © OpenStreetMap contributors
Route drawn by TrailSplits from published race information; approximate. For illustration, not navigation.
What to expect on the course
- Over the Mura bridge into Bad Radkersburg at about km 7.2 and across its main square near km 8
- Back into Slovenia at Gederovci around km 14.7
- Sodišinci and Murski Petrovci come twice, on the way to Petanjci and again after Krajna
- A loop through Gradišče and Murski Črnci between km 22 and km 28
- The last 2 km cross the Mura and its side channels into Radenci
The map follows the course map the organizer has shown since March 2025; the 2027 route is not yet confirmed.
Read the full course description
A single road course that starts and finishes beside Hotel Radin in Radenci and, on the organizer's current map, runs through Austria for about 7.5 km. The first 19 km are shared with the half marathon: west through Šratovci and Mele into Gornja Radgona after about km 3.5, over the Mura bridge into Bad Radkersburg at about km 7.2, across its main square near km 8, then east through Laafeld and back into Slovenia at Gederovci around km 14.7, and south through Sodišinci and Murski Petrovci to Petanjci. There, at about km 19, the marathon turns onto its own loop: Tišina at about km 21, a loop through Gradišče and Murski Črnci between km 22 and km 28, then Vanča vas, Rankovci and Gederovci near km 32, north to Krajna and back down the same road through Sodišinci and Murski Petrovci to Petanjci at km 40. The last 2 km cross the Mura and its side channels into Radenci. The organizer calls the course flat and AIMS-measured, with a start at 198 m and 122 m of climbing in all. Aid stations come every 2.5 km, with toilets at four points. The course page text still describes two 21 km laps, an older layout the map no longer shows.
Source, licence and file
TrailSplits reconstruction of the published route. Course: TrailSplits reconstruction; map data © OpenStreetMap contributors · ODbL · original source · Download reference GPX (42.7 km in the file). Approximate terrain-model heights added by TrailSplits, sampled and smoothed at roughly 100 m intervals. Buildings, bridges and small road gradients are not surveyed road elevations.Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved.
Three decisions to make before race day
Reach Petanjci within 2 h 30, or your race ends as a half
Enter the marathon loop at Petanjci, about km 19, within 2 h 30 or be sent to the half finish. That is about 7:54 per km, so treat 11:30 as the deadline.
More detail
Runners who have not entered the marathon loop at Petanjci, about km 19, within 2 h 30 are sent to the half-marathon finish and recorded as non-finishers. That needs about 7:54 per km from the start, close to 5 h 33 marathon pace. The basis is not stated, so with a single 09:00 start treat 11:30 as the deadline and give yourself a margin.
Run your own pace for the first 19 km with the half-marathon field
The half-marathon field shares your first 19 km from the 09:00 start, and relay runners join fresh at km 21 and km 32. Pace from your watch.
More detail
The half marathon starts with you at 09:00 and shares every metre to Petanjci, so the opening kilometres through Gornja Radgona and Bad Radkersburg are crowded and quick. After Petanjci the village loop is run by marathoners and relay runners, who in 2026 joined fresh at km 21 in Tišina and at km 32 between Rankovci and Gederovci. Pace from your watch, not the runners around you.
Collect your bib before race morning if you can
In 2026 race-morning pickup at Hotel Izvir ran 07:00 to 08:30, only 30 minutes before the gun. Collect in Ljubljana, Maribor or on Friday 13:00 to 19:00.
More detail
In 2026 bibs were handed out in Ljubljana at Hervis BTC on the Wednesday and in Maribor at Hervis Europark on the Thursday, both 11:00 to 18:00, and at Hotel Izvir in Radenci on Friday 13:00 to 19:00 or race morning 07:00 to 08:30, only 30 minutes before the gun. The organizer times car journeys to arrive in Radenci by 07:30.
Your race-day sheet
Even elapsed splits for 42.195 km. All clocks are local to Radenci.
ESTIMATED FINISH
13:00:00
MOVING PACE BUDGET
5:34/ km
ELAPSED PACE
5:41/ km
Finish limit not confirmed; no cutoff margin calculated
| Distance | Elapsed | Local clock |
|---|---|---|
| 5 km | 00:28:26 | 09:28:26 |
| 10 km | 00:56:53 | 09:56:53 |
| 15 km | 01:25:19 | 10:25:19 |
| 20 km | 01:53:45 | 10:53:45 |
| Halfway | 02:00:00 | 11:00:00 |
| 25 km | 02:22:12 | 11:22:12 |
| 30 km | 02:50:38 | 11:50:38 |
| 35 km | 03:19:05 | 12:19:05 |
| 40 km | 03:47:31 | 12:47:31 |
| Finish | 04:00:00 | 13:00:00 |
Training plan for Three Hearts Marathon 2027
A free week-by-week plan dated to this race. It starts from a stated default (weekly distance, longest recent run, days a week) that you can change; nothing is read from your watch or training history. It does not use the finish-time target above.
View my training planNo account required. Keep a fixed copy, download the calendar or get a subscription URL for Google or Apple Calendar.
Entry, bib pickup and rules
- Entry:
- Not yet open for 2027. In 2026: 40 euro from 14 October, rising to 50 euro, 70 on race day
- Bib pickup:
- 2026: Ljubljana, Maribor, or Radenci on Friday 13:00 to 19:00 and race morning 07:00 to 08:30
Read the full entry and pickup rules
Entry for 2027 is not yet open, and the entry page and rules still describe 2026. For 2026, online entry opened on 14 October 2025 at 40 euro until 28 October, then cost 45 euro to 13 April and 50 euro to the 6 May online deadline, and 70 euro on race day, when late entry was taken at the venue. Groups of ten or more paid 40 euro if entered by 13 April. The fee includes a single-use ChampionChip fixed to the back of the bib. Until the online deadline a refund cost an 8 euro fee, and after the race only a medical certificate earned one, less 15 euro. Runners under 16 needed a signed parental statement.
Sources
Checked 24 September 2026; next review due 2026-11-06. Event facts come from the organizer; the pacing sheet, decisions and plan are TrailSplits' own. Independently prepared by TrailSplits, not endorsed by the organizer.
- 2027 edition page
- Marathon course page
- 2026 rules (razpis)
- 2026 bib pickup notice
- 2026 relay and travel notices
What each source confirms
- 2027 edition page: The 45th edition on 15 May 2027 at Radenci (Hotel Radin) with a 09:00 start, the distances, aid stations every 2.5 km, four toilet points on the marathon, the wardrobe beside the bib tent and showers at the start and finish. The English page at /en/about-marathon gives the same date as May 15, 2027.
- Marathon course page: The 42.195 m distance, the 09:00 start, the 2 h 30 limit for entering the marathon loop at km 19, the 198 m start height, 122 m of climbing, the flat course and AIMS measurement, the course map (MaratonTrehSrc42Km.kml, version 2025.03) behind the map line, and the older two-lap description. The half-marathon page places the start in front of Hotel Radin.
- 2026 rules (razpis): The 2026 fee bands and deadlines, group price, refund fees, the chip in the fee, the parental statement for under-16s and the 2 h 30 rule at Petanjci; the English version at /en/tender adds that late runners are sent to the 21 km finish and recorded as DNF. 2026 facts, not 2027 confirmations.
- 2026 bib pickup notice: Pickup at Hervis BTC Ljubljana on 13 May, Hervis Europark Maribor on 14 May, and Hotel Izvir in Radenci on 15 May 13:00 to 19:00 and 16 May 07:00 to 08:30, with ChampionChip timing. The notice at /aktualno/prijave-na-44-maraton-treh-src-tudi-v-soboto confirms race-day entry at the venue in 2026.
- 2026 relay and travel notices: Relay runners joining at km 21 in Tišina and at km 32 between Rankovci and Gederovci in 2026 (the 2025 notice gives the same points), which fit the current course map; the notice at /aktualno/pravocasno-na-start-44-maratona-treh-src times car journeys to arrive by 07:30.