Sapanca Lake
A freshwater lake an hour east of Istanbul, ringed by wooded hills, bungalow hotels and lakefront tea gardens.
Updated 21 October 2026
Sapanca fills a tectonic trough between the hills east of İzmit at 33 metres above the sea, about sixteen kilometres long, five wide and up to 52 metres deep, some 45 square kilometres of water known to the Greeks as Boane, and it is close enough to Istanbul that the whole southern shore has become a weekend belt of bungalow hotels, lakefront restaurants and tea gardens. The northern shore is quieter, with reed beds, walking and cycling paths, fishing spots and villages behind. Around the lake are hazelnut orchards - Sakarya is hazelnut country - and up in the hills the Maşukiye valley with its trout restaurants beside running streams, and the Kartepe ski slope above. It is a lake for sitting beside rather than swimming in: bathing is limited, since the lake also supplies water for homes and industry in the region. The high-speed train from Istanbul reaches Sakarya quickly, which has made the whole area an easy overnight escape from the city.
Highlights
- The lake shore - tea gardens and restaurants along the water.
- The reed beds - the quieter northern edge and its paths.
- The Maşukiye valley - trout restaurants on the streams above.
- The hazelnut orchards - the crop the province lives on.
When to go
April to June and September to November; autumn colour around the lake is good. Weekdays are calm - Saturdays and Sundays bring Istanbul out in force.
Things to know
Swimming is limited - this is a lake to look at and eat beside. The southern shore is heavily built up. Weekend traffic and accommodation prices both rise sharply.
Nearby
Maşukiye and Kartepe are in the hills above; Taraklı's Ottoman houses are further inland.
Key facts
Source: Wikidata, item Q868012, read on 18 October 2026.
What to pack for Sapanca Lake
Chosen from what this place is for. Tap a kit for the full checklist.
- Travel rod + reel - A packable multi-piece rod fits in a case and covers most holiday fishing. Find on Amazon
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- Padded shorts - The one thing that makes a full day in the saddle bearable. Find on Amazon
- Shelter suited to the place - Tent, tarp or hut booking - match it to the terrain and rules. Find on Amazon
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.


