
Belgrade sits where the Sava meets the Danube, with a two-thousand-year-old fortress on the ridge above the junction watching both rivers at once. The marathon runs through the heart of that geography — the riverbanks, the bridges, the boulevards, and Kalemegdan above you — on a course that is flat and genuinely fast by any city-marathon standard.
One honest note before the detail: the organisers publish the 2027 championship courses as live Strava routes, and street-level details can still be tuned before race week. What follows is what the published routes show and what forty editions of this race make certain — check the official course page before you plan family viewing spots.

Map: European Running Championships / Belgrade Marathon
The course threads the city's set pieces rather than avoiding them. These are the places the published routes pass — and what each one is, from someone who knows them well.
The great park plain where the Sava gives itself up to the Danube, under the walls of the fortress. The widest, flattest, fastest running in the city — and where the race's start–finish infrastructure lives.
Two thousand years of everyone's empires — Celts, Romans, Byzantines, Ottomans, Austrians — stacked into one ridge of white walls above the rivers. You run beneath it; the day after, walk up and watch the confluence from the Pobednik monument. I did my student long runs on these paths.
Belgrade's marathon has always used its bridges — the crossings between the old city and Novi Beograd are where the course opens out and the river wind either helps you or humbles you. The views up the water to the fortress are the photographs you'll keep.
Grand, wide, Habsburg-flavoured streets through the centre — closed to traffic and lined with the loudest support on the course. This is where Belgrade turns out to watch, and Belgrade does not watch quietly.
The modernist blocks and long straight boulevards across the river — architecturally the opposite of the old town, and exactly where a flat course gets properly fast. Settle in and work.
The marathon is the full tour — both banks, the bridges, the boulevards — at eight on Sunday morning, before April has decided what it is doing with the day. The half gets the same city in one lap of the best of it, on Saturday morning with the whole weekend still ahead of you. The 10K at 18:00 is the wildcard: golden light on the rivers, a city already in its evening mood, and a race that ends where the night begins — which in Belgrade is not a figure of speech.
The honest note: this is a big-city race with championships attached, which means corrals, security, and more structure than the small Balkan races elsewhere on this site. If what you want is a quiet village start line, that is Boka in December. What Belgrade offers is the opposite trade: scale, noise, occasion — and a course that gives PBs back.