| 1/1/2006 | Texas Marathon | Kingwood | TX | ||
| 1/8/2006 | OC Marathon | Newport Beach | CA | ||
| Home | 1/15/2006 | P.F. Chang's Rock 'n' Roll Arizona Marathon | Phoenix, Scottsdale & Tempe | AZ | |
| 1/21/2006 | 540 Interactive Orlando Xtreme Marathon, 1/2 Marathon | Orlando | FL | ||
| 1/29/2006 | Hughston Orthopedic Hospital Callaway Gardens Marathon | Pine Mountain | GA | ||
| 2007 | 2/5/2006 | Mardi Gras Marathon | New Orleans | LA | |
| 2/12/2006 | Mercedes-Benz Mercedes Marathon | Birmingham | AL | ||
| 2/18/2006 | BI-LO Myrtle Beach Marathon | Myrtle Beach | SC | ||
| 2/26/2006 | Four Points by Sheraton Hyannis Marathon | Hyannis | MA | ||
| 3/5/2006 | Little Rock Marathon | Little Rock | AR | ||
| 3/12/2006 | Booz Allen Hamilton Lower Potomac River Marathon | Piney Point | MD | ||
| 3/19/2006 | Big Island Marathon | Hilo | HI | ||
| 3/25/2006 | National Marathon | Washington | DC | ||
| 4/1/2006 | Running Fit Martian Marathon | Northville | MI | ||
| 4/8/2006 | Eisenhower Marathon | Abilene | KS | ||
| 4/15/2006 | Charlottesville Marathon | Charlottesville | VA | ||
| 4/23/2006 | Katrina Relief Marathon | Clinton | MS | ||
| 4/30/2006 | New Jersey Marathon | Long Branch | NJ | ||
| 5/7/2006 | Lincoln Marathon | Lincoln | NE | ||
| 5/14/2006 | Central States Marathon | Ames | IA | ||
| 5/21/2006 | Coventry Health Care Delaware Marathon | Wilmington | DE | ||
| 5/28/2006 | Nissan Buffalo Marathon | Buffalo | NY | ||
| 6/4/2006 | Deadwood-Mickelson Trail Marathon | Deadwood | SD | ||
| 6/10/2006 | Hatfield-McCoy Marathon | Williamson | WV | ||
| 6/17/2006 | Grandma's Marathon | Duluth | MN | ||
| 6/24/2006 | Pacific Crest Marathon | Sunriver | OR | ||
| 7/1/2006 | Leadville Trail Marathon | Leadville | CO | ||
| 7/8/2006 | Grandfather Mountain Marathon | Boone | NC | ||
| 7/16/2006 | Loco Shoe Company Paul Bunyan Marathon | Bangor | ME | ||
| 7/24/2006 | Deseret Morning News and KJZZ TV Marathon | Salt Lake City | UT | ||
| 7/29/2006 | Jay Mountain Marathon | Jay | VT | ||
| 8/5/2006 | Southeast Road Runners Frank Maier Marathon | Juneau | AK | ||
| 8/12/2006 | Paavo Nurmi Marathon Paavo Nurmi Marathon (USA) | Hurley | WI | ||
| 8/19/2006 | Grizzly Marathon | Choteau | MT | ||
| 8/26/2006 | Green River Chamber of Commerce Run With the Horses Marathon | Green River | WY | ||
| 9/3/2006 | New Mexico Marathon | Albuquerque | NM | ||
| 9/9/2006 | YMCA Lake City Marathon | Warsaw | IN | ||
| 9/16/2006 | YMCA Bismarck Marathon/Half Marathon and Footfest 5k | Bismarck | ND | ||
| 9/24/2006 | Quad Cities Marathon | Moline | IL | ||
| 9/30/2006 | New Hampshire Marathon | Bristol | NH | ||
| 10/8/2006 | Towpath Marathon | Cleveland/Akron Area | OH | ||
| 10/14/2006 | United Technologies Hartford Marathon | Hartford | CT | ||
| 10/21/2006 | Breakers Marathon | Newport | RI | ||
| 10/28/2006 | 4-H Old Mulkey Marathon | Tompkinsville | KY | ||
| 11/5/2006 | City of Trees Marathon | Boise | ID | ||
| 11/12/2006 | Harrisburg Select Medical Corporation Harrisburg Marathon | Harrisburg | PA | ||
| 11/19/2006 | The Tulsa World Route 66 Marathon | Tulsa | OK | ||
| 11/25/2006 | Open | ||||
| 12/2/2006 | St. Jude Memphis Marathon | Memphis | TN | ||
| 12/10/2006 | New Las Vegas Marathon | Las Vegas | NV | ||
| 12/17/2006 | Christmas Marathon | Olympia | WA | ||
| 12/24/2006 | Open | ||||
| 12/31/2006 | Run for the Ranch Marathon | Springfield | MO |