Kocaeli is a dynamic industrial province in northwestern Turkey, straddling the eastern shore of the Marmara Sea and the Gulf of İzmit. Known historically as Nicomedia, it served as capital of the Eastern Roman Empire. Today it balances heavy industry with natural beauty—dense beech forests in Kartepe, pristine Black Sea coves, and a rich layered history from Byzantine to Ottoman eras. Visitors find a city largely bypassed by mass tourism yet rich in genuine Turkish urban life, affordable food, and easy access to Istanbul.
Top trails
Routes worth lacing up your boots for.
-
1
Kartepe Plateau Forest Loop
-
2
Maşukiye Valley Waterfall Trail
-
3
Samanlı Mountain Ridge Hike
-
4
Kandıra Northern Forest Walk
-
5
Gölcük Nature Park Trail
Trail difficulty levels
Pick a route that matches your fitness and experience.
Mostly flat, well-marked paths. Suitable for families and casual walkers.
Some elevation gain, longer distances. Requires basic fitness.
Significant climbs and exposure. Requires good fitness and route-finding.
Technical terrain, scrambling, or alpine conditions. Experience essential.
Local hazards
What to watch out for on the trail.
Sudden weather changes — always carry rain gear and warm layers.
Wildlife encounters — make noise on the trail and store food properly.
Trail conditions can deteriorate after rain — check recent reports before setting out.