The first half marathon to take place in Belgrade, Serbia was held in the middle of a winter blizzard. Contributor First Production was able to get his drone in the air to capture this event from a bird's eye perspective. By following the course of the race, you'll get a great aerial tour of the great capital city. Situated on the banks of the Danube River, Belgrade has a metropolitan population of about 1.7 million. It's the largest city in Serbia and one of the largest in the entire Balkan region of Southeastern Europe.