It can be tricky wrote:
Nope. Grandmas also is not eligible. Any one direction course is ineligible.
Top 10 at Boston does qualify.
LIST OF IAAF CERTIFIED MARATHON AND HALF MARATHON COURSES
USA Big Sur, CA Big Sur International Marathon Marathon Downhill, Separation > 50%
USA Boston, MA Boston Marathon (Commonwealth Ave. Finish Marathon Downhill, Separation > 50%
USA Canton, OH Pro Football Hall of Fame Half Marathon Half Marathon IAAF rule compliant
USA Canton, OH Pro Football Hall of Fame Marathon Marathon IAAF rule compliant
USA Chattanooga, TN Chattanooga Marathon Marathon IAAF rule compliant
USA Chicago, IL The Bank of America Chicago Mar Marathon IAAF rule compliant
USA Columbus, OH Columbus Half Marathon Half Marathon IAAF rule compliant
USA Columbus, OH Columbus Marathon Marathon IAAF rule compliant
USA Detroit, MI Detroit Free Press/Talmer Bank US Only Half Marathon Half Marathon IAAF rule compliant
USA Eugene, OR Eugene Marathon Marathon IAAF rule compliant
USA Fort Worth, TX Cowtown Marathon Marathon IAAF rule compliant
USA Friday Harbor, WA San Juan Island Marathon Marathon IAAF rule compliant
USA Honolulu, HI HMSA 30 Kilometers Race Course 30 km IAAF rule compliant
USA Honolulu, HI Honolulu Ekiden Relay Course Marathon IAAF rule compliant
USA Houston, TX Aramco Houston Half Marathon Half Marathon IAAF rule compliant
USA Houston, TX Chevron Houston Marathon Marathon IAAF rule compliant
USA Kalepolepo, HI Valley of the Sea Marathon Marathon IAAF rule compliant
USA Kitty Hawk, NC Outer Banks Marathon Marathon Separation >50%
USA Lahaina, HI Oceanfront Half Marathon Half Marathon IAAF rule compliant
USA Lake Buena Vista, FL Disney D&W Half Marathon Half Marathon IAAF rule compliant
USA Lake Buena Vista, FL Disney D&W Marathon Marathon IAAF rule compliant
USA Las Vegas, NV Rock ‘n’ Roll Las Vegas Half Marathon Half Marathon IAAF rule compliant
USA Las Vegas, NV Rock ‘n’ Roll Las Vegas Marathon Marathon IAAF rule compliant
USA Maui, HI Maui Marathon Marathon Separation >50%
USA Melbourne, FL Florida Half Marathon Half Marathon IAAF rule compliant
USA Melbourne, FL Florida Marathon Marathon IAAF rule compliant
USA Miami, FL North American Intercontinental Marathon Marathon IAAF rule compliant
USA Monterey Bay, CA Big Sur Half Mar. on Monterey Bay Half Marathon IAAF rule compliant
USA New York, NY New York City Marathon Marathon IAAF rule compliant
USA Orlando, FL Best Damn Race Half Marathon Half Marathon IAAF rule compliant
USA Orlando, FL Orlando Half Marathon Half Marathon IAAF rule compliant
USA Philadelphia, PA Philadelphia Marathon Marathon IAAF rule compliant
USA Portland, OR Portland Marathon Marathon IAAF rule compliant
USA Sacramento California International Marathon Marathon Downhill, Separation >50%
USA San Diego, CA Rock ‘n’ Roll San Diego Half Marathon Half Marathon IAAF rule compliant
USA San Diego, CA Rock ‘n’ Roll San Diego Marathon Marathon IAAF rule compliant
USA South Lake Tahoe, CA Lake Tahoe Half Marathon Half Marathon Downhill, Separation > 50%
USA South Lake Tahoe, CA Lake Tahoe Marathon Marathon Downhill, Separation > 50%
USA The Woodlands, TX The Woodlands Marathon Marathon IAAF rule compliant
USA Vancouver, WA Apple Tree Half Marathon Half Marathon IAAF rule compliant
USA Vancouver, WA Apple Tree Marathon Marathon IAAF rule compliant
USA Wailuku, HI Valley of the Sea Half Marathon Half Marathon IAAF rule compliant
USA Washington, DC United Airlines Rock 'n' Roll Half Marathon Half Marathon IAAF rule compliant
USA Washington, DC Marine Corps Marathon Marathon IAAF rule compliant
USA Washington, DC United Airlines Rock 'n' Roll Marathon Marathon IAAF rule compliant
https://media.aws.iaaf.org/competitioninfo/01664bab-af0a-44d6-a014-cd603492f592.pdfLIST OF IAAF CERTIFIED MARATHON AND HALF MARATHON COURSES
Updated 5 October 2018