NLB Ljubljana Marathon - Half Marathon.
The Ljubljana Half Marathon is a flat city loop with just 55 metres of climbing, where the course rises gently through the first half and falls away again in the second. Preparing for the Ljubljana Half Marathon means training for a fast, even race; the minimal early rise demands patience before the second half opens up to run. Also known as Ljubljana Marathon.
No date has been announced for the next edition yet. The course, elevation and route profile are from the most recent edition.
Ljubljana Half Marathon: Course, Route Profile & Map
The half marathon of the NLB Ljubljana Marathon runs 21.1 km through the Slovenian capital. It starts on Slovenska cesta in the centre and finishes at Kongresni trg, heading through the northern districts and once around Rožnik, the hill just west of the centre, yet stays flat throughout: only around 55 metres of gain over the full distance, with more than 80 percent of the course flat.
This is a classic fast city course, no real climbs and no technical sections, just wide roads and a narrow elevation band between roughly 294 and 315 metres. The Ljubljana Marathon is one of the largest running events in Slovenia and fills the city centre with a big international field every October. For anyone chasing a half-marathon personal best the conditions are ideal: a flat, easy-to-read profile that rewards pace and forces almost no changes of rhythm.
| Start | Length | Ø | Max. | Gain | Cat. |
|---|
Climb categories follow the road-cycling convention and rate the terrain itself (length and gradient) regardless of sport: Cat. 4 marks the easiest rated climbs, Cat. 1 the hardest, and HC (hors catégorie, “beyond categorization”) is reserved for the most brutal ascents. Short climbs below the Cat. 4 threshold stay unrated.
How to pace Ljubljana Half Marathon.
Start under control
The course is flat but not perfectly level: over the first eleven kilometres or so it climbs very gradually by about 17 metres before dropping away in the second half and running flat back to the finish. That split dictates the strategy. Run the gently dragging first half at your planned target pace and resist the reflex to compensate for the barely perceptible rise with more effort; that is exactly where many lose substance early. The freshness you save pays off after kilometre 11, where the slight downgrade allows a touch more speed at the same effort. With 83 percent flat, there is no hill to recover on; it all comes down to even distribution of energy.
Hold your rhythm
The main trap is too fast a start on the wide, flat road in a large field.
Spend what is left
The race is decided in the descending final third: run the first half within yourself and you can close on a negative split.
Training plan for Ljubljana Half Marathon: 12-week build
Build the base
Depending on your level you will be out on the half marathon for roughly 1:20 to 2:10 hours. On this flat course the effort is very even: one long, brisk sustained run around anaerobic threshold, with no climbs to break the rhythm and no descents to recover on. That makes the half marathon both predictable and unforgiving, because a runner who starts too fast has no hill to hide behind.
Train race pace
Pacing therefore decides the race. In a big field on the wide Slovenska cesta the temptation to run the opening kilometres too quickly is strong, and you pay for it over the final five kilometres, where the whole task is simply holding pace.
Rehearse the course
In training, threshold work is the foundation: tempo runs and longer threshold intervals around your target half-marathon pace. Add progressive long runs in which you run the closing kilometres faster to build the specific endurance for the second half of the race. Because the course is flat and forces almost no changes of pace, you benefit especially from sessions on flat, fast ground that groove an even race pace.
Arrive fresh
Practise holding your goal pace steadily over long distances; on this profile the win goes not to the strongest surge but to the most even distribution of effort.
Courses
Download the Ljubljana Half Marathon course as a GPX file for your watch or bike computer.
Let YOUB adapt your plan for NLB Ljubljana Marathon - Half Marathon dynamically
Ben connects your goal, the course, current load, recovery, and calendar. Your plan stays pointed at race day even when real life is not perfectly plannable.
Everything about NLB Ljubljana Marathon - Half Marathon.
How long is Ljubljana Half Marathon?
Ljubljana Half Marathon is 21.1 km long. That distance shapes how much aerobic endurance, pace durability, and race-specific work belong in the training plan.
How much elevation gain does Ljubljana Half Marathon have?
Ljubljana Half Marathon has around 55 m of elevation gain over 21.1 km. That affects pacing, muscular load, and preparation for late-race sections.
What is the route profile of Ljubljana Half Marathon?
Ljubljana Half Marathon is classified as Flat, averaging 2.6 vertical metres per kilometre. 83% of the route is flat, 8% climbs moderately (2 to 6%) and 0% is steeper than 6%.
Is Ljubljana Half Marathon a loop course?
Yes, Ljubljana Half Marathon is laid out as a loop: start and finish are in the same place.
Is there a GPX file for the Ljubljana Half Marathon course?
Yes. The Ljubljana Half Marathon course is on this page as a free GPX download — ready to import into Garmin, Wahoo, Komoot, Strava or any other app that reads GPX.
How should I prepare for Ljubljana Half Marathon?
Preparation for Ljubljana Half Marathon should account for 21.1 km, 55 m of elevation gain, current training load, and available training time. An adaptive plan helps place key sessions without ignoring recovery and real life.
What pacing strategy works for Ljubljana Half Marathon?
The pacing strategy for Ljubljana Half Marathon should reflect 21.1 km, 55 m of elevation gain, and your current fitness. Start controlled and keep margin for sections where the profile or fatigue makes target pace harder.
When does NLB Ljubljana Marathon - Half Marathon next take place?
No date has been announced for the next edition yet. The most recent one was held on October 18, 2026.
Where does NLB Ljubljana Marathon - Half Marathon take place?
NLB Ljubljana Marathon - Half Marathon takes place in Ljubljana, Slovenia.
How do I register for Ljubljana Half Marathon?
Registration runs through the organiser: ljubljanskimaraton.si. YOUB shows you the course, elevation profile and training plan for your preparation.
