American Running Association - Non-profit organization encourages people of all ages to promote better health through walking and jogging. Offers educational programs, and motivational advice for maintaining an active and healthy lifestyle.
Atlanta Track Club - Non-profit organization promotes health and fitness, offers amateur road racing, cross-country, and track & field programs including Atlanta Marathon and Half Marathon.
Blackmores Sydney Marathon - Provides information on Marathon (42km), Half Marathon (21km), Bridge Run (9km), and Family Fun Run (3.8km) races. Includes details on registration, race day events, and results.
Boston Athletic Associaton - Official Boston Marathon and Half Marathon website provides online registration, event information, running tips and course details.
Chicago Marathon - Official website provides course information, race history archives including US & World records, fitness, and training information.
Dallas White Rock Marathon - Organizes Dallas White Rock Marathon, Half Marathon, and 5-Person Relay. Offers online registration, race details, newsletters, and personalized marathon commemoratives.
Honolulu Marathon - In addition to the marathon race, organizes Race Day Walk, and 5k Walk. Site offers registration details, race information, and historical results archive.
Las Vegas Roadrunners - Offers training program for all runners from beginners to the experienced marathoners, conducts seminars, and weekly group runs.
Los Angeles Marathon - City of Los Angeles Marathon website provides information on the marathon course, event calendar, online registration, and official LA Marathon merchandise.
Marine Corps Reserve Marathon : People’s Marathon - Official Marine Corps Marathon website. Provides information on race history, entry information, race-day events schedule, and course information.
Myrtle Beach Marathon - Official website for The BI-LO Myrtle Beach Marathon, Dasani Half Marathon, and Marathon Relay. Provides race information, online registration, and course records.
New Las Vegas Marathon, The - Official Las Vegas Marathon website provides online registration, running tips, and information on volunteer opportunities and event schedule.