Belgrad Forest Istanbul: Trails, History and How to Visit

Belgrad Forest is the closest thing Istanbul has to a real exhale. It sits on the European side, up behind Sarıyer, and on a Sunday morning you will see half the city walking the same gravel loop with thermoses of tea and a dog or two. If you have spent three days fighting crowds in Sultanahmet, this is where you go to remember that Istanbul also has 5,500 hectares of oak and beech where almost nobody is in a hurry.

I send a lot of visitors here, usually the ones who tell me they are “templed out” and want a day that does not involve a queue. Here is exactly how I would plan it, what is genuinely worth doing, and the few practical things that trip people up.

Why is Belgrad Forest worth a half-day?

Short answer: it is the lung of the city, and the trails are flat, shaded, and easy to follow. You do not need to be a hiker. You do not need a guide. You bring a picnic, walk a loop, eat under the trees, and head back feeling like you actually left Istanbul for a few hours without leaving Istanbul.

The forest is also genuinely old in a way that matters. For centuries it was the city’s water supply, first under the Byzantines and then far more ambitiously under the Ottomans. That history is still standing here in the form of stone reservoirs and aqueducts, which is what makes a walk in Belgrad Forest more interesting than a walk in just any big park. It is green space and open-air museum at the same time.

If your trip leans toward the outdoors in general, it pairs well with the other green escapes I write about in my guide to Istanbul’s nature and green side, and it is one of the entries in my round-up of the best parks and forests in Istanbul.

A little history (and why those stone reservoirs are everywhere)

The name comes from a village. After Süleyman the Magnificent’s Belgrade campaign in the 16th century, settlers from the Balkans were moved into the area, and the village they founded gave the whole forest its name. Those families were not here by accident. They knew how to maintain water channels, and water was the entire point of this forest for the city below.

The Ottomans built two great water networks that drew on these hills. The Kırkçeşme system, expanded under Süleyman with the great architect Mimar Sinan, carried spring water down to Istanbul through a chain of aqueducts, including the famous long bridges like Uzunkemer and Mağlova. Later came the Taksim line. Across both systems there are seven historic dams, the bents, tucked into the valleys.

The two you are most likely to see on a walk are the Büyük Bent, the “Great Dam,” first raised under Sultan Ahmed III in 1724 and rebuilt by Mahmud I in 1748, and the Sultan Mahmud Bendi (Yenibent), finished in 1839. Standing in front of a 300-year-old stone reservoir in the middle of a forest, with families picnicking beside it, is the kind of quiet, unhurried Istanbul moment you do not get on İstiklal. The Ottomans kept these water sources almost obsessively clean, which is a big reason this whole basin survived as forest instead of getting swallowed by the city. After the Republic was declared, it became a protected area, and it has stayed one.

What to do in Belgrad Forest

Most people come for one of four things: walking, running, cycling, or a picnic. Here is how I would rank them.

Walk the Neşet Suyu loop. This is the headline trail and the one I send first-timers to. Neşet Suyu is a roughly 6.5 km circuit (you will also see it listed as about 6.4 km) that starts near the Neşet spring and winds through the forest, looping past the old reservoir and a small lake at the far end. It is wide, well-graded, and shaded almost the whole way, so it works for kids, grandparents, and anyone who just wants an easy hour or two on their feet. There is a little shop at the start where you can grab water and snacks before you set off, and a café along the way if your legs give out. The spring itself, Neşet Suyu, has clean water people genuinely come to fill bottles from, so do not be surprised to see folks queued up with empty jugs.

Run or cycle. Those same gravel loops are a serious favourite with Istanbul’s runners and cyclists, especially early on weekend mornings before the picnic crowd arrives. The surface is forgiving and the gradients are gentle. If you are the kind of traveller who keeps up a routine on the road, this is one of the best spots in the city for it. I cover more options like it in my piece on exercising in Istanbul.

Have a picnic, the right way. Picnicking might be the single most popular thing people do here, and it is lovely. One important rule though: you can only light a fire or barbecue (mangal) in the designated areas. Cooking anywhere else in the forest is prohibited, and the rangers do enforce it, for obvious reasons in a forest this dry in summer. So bring your spread, claim a table or a shady patch, and keep the grill to the marked zones.

Visit the Atatürk Arboretum. Right next to the forest, near Bahçeköy, is the Atatürk Arboretum, a curated botanical collection that is spectacular in autumn when the maples turn. It usually has its own modest entrance fee and is a separate, ticketed area, but if you are already out here it is well worth the detour. It is one of the best places in the city to catch Istanbul’s forests in autumn colour.

How big is the forest, and what lives in it?

The whole protected area runs to roughly 5,500 hectares, which is a lot of trees by any city’s standard. The climate here sits between Central European and Mediterranean, and that mix shows in the variety of soils, landforms, plants, and animals you will find. Sessile oak (Quercus petraea) is the classic tree you will see again and again, alongside beech, hornbeam, and chestnut. In spring it is all fresh green; in late October and November it is gold and rust, which for my money is the best time to come.

The forest is divided into several smaller nature parks, including Neşet Suyu, so the area you actually walk in feels manageable rather than overwhelming. You are never really lost; the loops are signed and there is almost always someone else on the path.

How to get to Belgrad Forest

The gateway is the village of Bahçeköy, on the northern edge of the European side. You have two realistic options.

By public transport. Take the M2 metro to its northern end at Hacıosman, then catch the 42HM bus up to Bahçeköy. From Taksim the whole trip runs about an hour, and from the Bahçeköy stop the forest entrance is only a short walk, around 100 meters. Other buses such as the 42 and 151 also serve the area depending on where you start. If you are still getting your head around the system, my full guide to getting around Istanbul on public transport and the Istanbul metro guide will sort you out. Tap an Istanbulkart and you are set.

By car or taxi. You can drive straight to the Bahçeköy entrance, which is the simplest option if you are packing a full picnic. There is parking near the entrances.

What is the entrance fee?

Here is the part people get confused about. Walking or cycling in, you pay nothing: the forest is free for pedestrians and cyclists. The fee is for cars. At the time of writing the vehicle entrance is modest, somewhere in the region of 30 TL, though that number has crept up over the years and is exactly the kind of thing that changes, so treat it as a rough guide and bring a little cash. The Atatürk Arboretum, if you choose to add it, charges its own separate small entry.

A few honest tips before you go. Come early on weekends if you want any peace, because by midday the picnic areas near the entrances fill right up. Bring water even though there are springs and shops, and bring layers, because the forest sits a few degrees cooler than the city center and the shade keeps it that way. And do not plan to do much else that day. Belgrad Forest is not a checkbox between two museums; it is the day. Pair it with a slow afternoon and you will leave understanding why locals guard this place so fiercely.

If a forest day whets your appetite for more low-key, leafy corners of the city, take a look at where to find the green side of Istanbul beyond the obvious sights. Belgrad Forest is the big one, but it is far from the only place worth lacing up your shoes for.