ROANOKE, Va. -

They're called "the green team."

The group, made up of volunteers, works to help keep the marathon- clean.

The Clean Valley Council approached marathon organizers in the second year of the event to see if they wanted to "green" the event.

Even though it costs a little more on the front end, the efforts have reduced waste and made the marathon the first certified green event in our area.

"Over the last couple of years the event has generated about a ton of waste each year, so 2-thousand pounds of waste, and of that- we've been able to compost and recycle 80% and we're trying to get those numbers down even further," explains Cristina Seigel of Clean Valley Council.

The Clean Valley Council credits things like choosing cups that can be composted, online registration and separating different kinds of trash with making the marathon more environmentally friendly.