Water bottles instead of cups?
The race director of a very small race (less than 100 runners) suggested providing water at aid stations in small water bottles (same size as cups) instead of cups.
He claimed it would make for a "greener" race and still give runners an adequate amount of water they could easily drink while running. It would also eliminate the need to pour water from jugs into paper cups.
A bunch of empty water bottles bouncing across the course, though, would be a greater safety hazard than flattened cups.
What do you think?