| Albany, OH |
1 |
| Alpharetta, GA |
3 |
| Amherst, MA |
2 |
| Andover, NJ |
1 |
| Ann Arbor, MI |
2 |
| Annapolis, MD |
1 |
| Asheville, NC |
4 |
| Athens, OH |
1 |
| Atlanta, GA |
1 |
| Austin, TX |
6 |
| Bellevue, WA |
1 |
| Belmont, MA |
2 |
| Berkeley, CA |
2 |
| Birmingham, AL |
2 |
| Boise, ID |
1 |
| Boulder, CO |
1 |
| Braintree, MA |
1 |
| Bridgewater, NJ |
2 |
| Cambridge, MA |
1 |
| Cambridge, MA |
2 |
| Carmel, IN |
2 |
| Carmel, IN |
1 |
| Carpentersville, IL |
2 |
| Charlotte, NC |
1 |
| Cincinnati, OH |
2 |
| Columbia, SC |
1 |
| Columbus - Clean Fuels Ohio, OH |
1 |
| Columbus State Community College, OH |
1 |
| Columbus, OH |
2 |
| Concord, NC |
4 |
| Concord, NH |
1 |
| Crozet, VA |
3 |
| Cupertino, CA |
5 |
| Davis, CA |
2 |
| Dayton, OH |
2 |
| Denver, CO |
2 |
| Destin, FL |
1 |
| Diamond Bar, CA |
1 |
| Durham, NC |
3 |
| Edmonton, AB |
3 |
| Elk River, MN |
1 |
| Eugene, OR |
3 |
| Evanston, IL |
2 |
| Fairfield, CT |
2 |
| Fargo, ND |
1 |
| Frederick, MD |
1 |
| Gardena, CA |
1 |
| Golden, CO |
1 |
| Goleta, CA |
1 |
| Grapevine, TX |
13 |
| Hattiesburg, MS |
1 |
| Hilo, HI |
1 |
| Honolulu, HI |
3 |
| Houston, TX |
6 |
| Huntsville, AL |
1 |
| Hyattsville, MD |
1 |
| Issaquah, WA |
4 |
| Ithaca, NY |
1 |
| Kalamazoo, MI |
1 |
| Kitchener, ON |
2 |
| Las Vegas, NV |
3 |
| Lexington, KY |
1 |
| Lincoln City, OR |
2 |
| Los Alamitos, CA |
1 |
| Los Angeles, CA |
3 |
| Lynden, WA |
1 |
| Madison, WI |
2 |
| Madison, WI |
1 |
| Memphis, TN |
1 |
| Metuchen, NJ |
1 |
| Morristown, NJ |
5 |
| Moscow, ID |
1 |
| Murray, UT |
2 |
| Naperville, IL |
3 |
| New Orleans, LA |
2 |
| New York City, NY |
1 |
| Norristown, PA |
1 |
| North York, ON |
1 |
| Oklahoma City, OK |
4 |
| Oxnard, CA |
3 |
| Palo Alto, CA |
1 |
| Pleasantville, NY |
2 |
| Plymouth Meeting, PA |
1 |
| Plymouth, MI |
1 |
| Plymouth, NH |
1 |
| Pomfret, CT |
1 |
| Poolesville, MD |
11 |
| Portland, OR |
10 |
| Portsmouth, NH |
1 |
| Poughkeepsie, NY |
1 |
| Prairie Village, KS |
2 |
| Richmond - Libbie Mill - Midtown, VA |
1 |
| Riverhead, NY |
1 |
| Riverside, CA |
1 |
| Rochester, NY |
2 |
| San Antonio, TX |
3 |
| San Diego, CA |
7 |
| San Luis Obispo - Central Coast Clean Cities, CA |
1 |
| San Luis Obispo, CA |
1 |
| San Mateo, CA |
1 |
| San Mateo, CA |
1 |
| Santa Rosa, CA |
4 |
| Sarasota, FL |
6 |
| Saskatoon, SK |
1 |
| Satellite Beach, FL |
4 |
| Schenectady, NY |
3 |
| Scottsdale, AZ |
3 |
| Sechelt, BC |
1 |
| So Portland, ME |
2 |
| South Haven, MI |
1 |
| South Paris, ME |
1 |
| St. Louis, MO |
4 |
| State College, PA |
2 |
| Steilacoom, WA |
1 |
| Toronto - Brampton, ON |
2 |
| Tulsa, OK |
1 |
| Urbana, IL |
1 |
| Vancouver, WA |
2 |
| Victoria, BC |
1 |
| Vincentown, NJ |
1 |
| Virginia Beach, VA |
7 |
| Waimea, HI |
1 |
| Walla Walla, WA |
1 |
| Washington, DC |
4 |
| Wenatchee, WA |
1 |
| West Des Moines, IA |
1 |
| West Kelowna, BC |
1 |
| White River Junction, VT |
2 |
| Woodland Hills, CA |
2 |
| Worcester, MA |
2 |
| Yachats, OR |
2 |
| 131 Events |
279 |
