One of my old workplaces was about 50 km or so from home and I used to drive 15 km and pull the bike off the rack and ride the other 35 km mostly on a rail trail. There are a few parking lots along the trail and I would vary the cycling distance depending on my mood. By the end of that work contract I was doing the 70 km round trip. It did get rather interesting as it got darker and ended up having to buy another light system.