| Albany, OH |
2 |
| Andover, NJ |
2 |
| Ann Arbor, MI |
2 |
| Annapolis, MD |
1 |
| Asheville, NC |
1 |
| Atlanta, GA |
1 |
| Austin, TX |
2 |
| Bakersfield, CA |
1 |
| Bellevue, WA |
2 |
| Belmont, MA |
1 |
| Berkeley, CA |
1 |
| Boise, ID |
1 |
| Boulder, CO |
1 |
| Bozeman, MT |
1 |
| Bridgewater, NJ |
1 |
| Cambridge, MA |
1 |
| Carmel, IN |
2 |
| Carmel, IN |
2 |
| Carpentersville, IL |
2 |
| Cincinnati, OH |
1 |
| Clarksville, MD |
4 |
| Columbus State Community College, OH |
1 |
| Columbus, OH |
1 |
| Concord, NH |
1 |
| Cupertino, CA |
11 |
| Davis, CA |
1 |
| Denver, CO |
1 |
| Diamond Bar, CA |
3 |
| Durham, NC |
2 |
| Durham, NH |
2 |
| Estero, FL |
2 |
| Evanston, IL |
1 |
| Gardena, CA |
1 |
| Golden, CO |
2 |
| Grapevine, TX |
3 |
| Harrisonburg, VA |
2 |
| Island Park, NY |
1 |
| Issaquah, WA |
2 |
| Ithaca, NY |
2 |
| Juneau, AK |
2 |
| Los Alamitos, CA |
2 |
| Los Angeles, CA |
10 |
| Lynden, WA |
1 |
| Madison, WI |
4 |
| Marin County, CA |
3 |
| Memphis, TN |
1 |
| Middletown, CT |
1 |
| Milwaukee, WI |
1 |
| Morristown, NJ |
2 |
| Naperville, IL |
2 |
| Palo Alto, CA |
3 |
| Plymouth Meeting, PA |
1 |
| Plymouth, MA |
1 |
| Plymouth, MI |
1 |
| Poolesville, MD |
2 |
| Portland, OR |
1 |
| Portsmouth, NH |
2 |
| Poughkeepsie, NY |
3 |
| Quincy, MA |
1 |
| Raleigh, NC |
1 |
| Regina, SK |
1 |
| Rehoboth Beach, DE |
2 |
| Richmond, VA |
2 |
| Riverhead, NY |
1 |
| Rochester, NY |
2 |
| San Diego - SDSU, CA |
3 |
| San Diego, CA |
16 |
| San Luis Obispo - Central Coast Clean Cities, CA |
2 |
| San Luis Obispo, CA |
2 |
| San Mateo, CA |
1 |
| San Mateo, CA |
2 |
| Santa Cruz, CA |
1 |
| Santa Monica, CA |
2 |
| Santa Rosa, CA |
1 |
| Sarasota, FL |
1 |
| Saskatoon, SK |
1 |
| Satellite Beach, FL |
2 |
| Schenectady, NY |
1 |
| Scottsdale, AZ |
1 |
| Seattle, WA |
3 |
| So Portland, ME |
3 |
| South Pasadena, CA |
1 |
| St. Louis, MO |
1 |
| Steilacoom, WA |
5 |
| Syracuse, NY |
2 |
| Vancouver, WA |
1 |
| Vincentown, NJ |
2 |
| Virginia Beach, VA |
2 |
| Washington, DC |
1 |
| Wayland, MA |
1 |
| Westerly, RI |
1 |
| White River Junction, VT |
3 |
| Woodland Hills, CA |
1 |
| Worcester, MA |
1 |
| Worcester, MA |
3 |
| Yachats, OR |
1 |
| 96 Events |
192 |
