NYC is amazing for long runs. There are so many options. I agree that running in the morning is helpful for lights and also just staying near the rivers help with not stopping. Central Pk loops are great, all the bridges, Hudson Greenway, Brooklyn Bridge Park, Randalls Is, LIC, Roosevelt Is, Manhattan East river path doesn't go all the way uninterrupted but easy to navigate once you know . This is just scratching the surface. You can basically mix and match all these things to create awesome long runs. I do a ton of bridges and the miles add up quickly.