The Bergen Cycle Tunnel is recognized as the world's longest cycle tunnel. It stretches for 24.5 kilometers and connects the urban areas of Bergen and Arna. The tunnel opened in 2017 and is part of a larger investment in cycling infrastructure in the region, which aims to promote sustainable transport.
The tunnel is designed to provide cyclists with a safe and comfortable alternative to car traffic, and it has a smooth and good road that makes it easy to cycle through. Inside, there is lighting and ventilation, which contributes to a better experience for those who use it. The cycle tunnel has become a popular attraction for both locals and visitors, and it provides opportunities for scenic cycling tours in the area.