Geyve is a town in Sakarya Province in the Marmara region of Turkey. The closest international airport is Istanbul Sabiha Gokcen International Airport, 139 km from Geyve. It's the third largest town of Sakarya Province in terms of area. Geyve is located at the foot of Geyve Gorge, which is set between two mountain ranges and lies along the Sakarya River. Geyve region has an impressive green landscape and productive nature.