Photo via Willie Nelson

Summer is on its way! That means it’s outdoor concert and music festival season.

Unfortunately, all that traveling to and from venues really takes a toll on the environment. According to the green tour gurus at Reverb, fans’ travel accounts for over 80% of the carbon footprint of a rock concert.

Yikes.

Seems like now is the perfect time to take on the fourth Green Music Group Challenge, which asks us to travel lighter. It’s brought to you by none other than the biodiesel king Willie Nelson.

So carpool to your next show or avoid the traffic entirely by taking public transportation. Biking is not out of the question either (it’s more common than you think!) and you can always walk if you’re lucky enough to live close to your favorite club.

Better yet, think about ways you could green your travel in other areas of your life, like your daily commute to work or school or your weekly trip to the grocery store.

Rails-to-Trails Conservancy has a nifty tool called TrailLink, which can help you find bike trails and walking paths in your area. Although I don’t know how many of us regularly travel via horse (maybe Willie Nelson does, actually…), TrailLink also includes information about equestrian trails.

Hear what Willie has to say on the topic:

Did I mention there are prizes? To enter the drawing for this challenge – and earn a chance to win a $500 gift certificate to Hard Rock – take a photo proving you completed the action and upload your pic to the Green Music Group’s website. Remember to tag your photo with the word “FOUR.” You’ll also be entered to win the grand prize – a Honda Insight Hybrid. The deadline for challenge four is noon ET on Friday, June 4.

And remember, there are nine challenges in all. We’ll be hearing from more of the Green Music Group’s founding members in the coming weeks on ways we can go green.