Here's another incentive to finish the race fast: The course is about to shut down. Largely under pressure to reopen cars to traffic, these marathons have imposed six-hour limits. (The Atlanta Marathon has a five-hour limit; the Hudson-Mohawk River Marathon, five and a half hours.)
- A1A Marathon (Fort Lauderdale)
- Big Island International Marathon (Hawaii)
- California International Marathon (Folsom, California)
- Carlsbad Marathon
- Charlotte's Thunder Road Marathon
- Colorado Marathon
- Denver Marathon
- Houston Marathon
- Midsouth Marathon Wynne, Arkansas
- Mad City Marathon (Madison, Wisconsin)
- Melbourne and Beaches Marathon (Florida)
- Memphis Marathon
- Midsouth Marathon (Wynne, Arkansas)
- Running in the Cold
- Ocala Marathon
- Vermont City Marathon Burlington, Vermont
- California International Marathon Folsom, California
- Sedona S Marathon (Arizona)
- Surf City Marathon (Huntington Beach, California)
- Tallahassee Marathon
- Vermont City Marathon (Burlington, Vermont)