Bring Your own Bottle
Most road races and triathlons use paper cups at the aid stations to dispense water and sports drinks. But this creates a big mess on the road, not to mention the wasted water and sticky sports drink that you spill down your front. Instead of using cups, consider the BYOB option. Some races are integrating dispensers for BYOB runners to use at the aid stations.
Just say "No" to the T-shirt
If you're a regular competitor, then no doubt you have a closet full of old (and often ugly) race t-shirts that you've never worn. So next time you pick up your race packet at registration tell them you don't want the shirt. Some races are starting to offer the opt-out option in the online registration. Others are donating all the refused t-shirts to charity.
Recycle Your Shoes
If you're a regular runner, you probably go through a pair of training shoes every two or three months. And like the t-shirts, your closet is full of retired running shoes. So the next time you're heading to your local running store check that they have a recycling bin and bring your old shoes. Also, a growing number of races are offering shoe recycling too.
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Bruce Rayner is Chief Green Officer of Athletes for a Fit Planet, a leading provider of environmental consulting services to event organizers and online news and information for athletes. Look for the FitPlanet Pledge of Sustainability on race websites and find green events in the FitPlanet Green Events Directory.