If you're wondering how heavy urban benches are and whether two people can move them around easily, the short answer is: it depends on the bench. Most standard urban benches—think metal frames with wood slats or simple steel park benches—weigh between 80 and 250 pounds (36–113 kg). That range is broad because materials and construction vary so much.
Lightweight aluminum or slim steel-frame benches often come in around 80 to 150 pounds. Two people can usually lift and carry those for a short distance, but "easily" might be a stretch because benches are long, bulky, and awkward to grip. With good lifting technique and a clear path, it's doable.
Heavier options, including cast iron, thick steel, recycled plastic lumber, or concrete benches, can weigh anywhere from 200 to over 600 pounds. In that case, two people should not try to move them alone. You might be able to slide one on smooth ground with two people, but lifting and carrying is unsafe without a dolly or extra helpers.
One more thing: many urban benches are bolted to the ground. Even a lighter bench won't budge until you remove the mounting bolts or brackets. Check the base first.
So, can two people move them around easily? For an unbolted bench under about 150 pounds, two people can manage it with care. For heavy steel, concrete, or installed benches, it's not easy and usually not safe without equipment or more people.