October is the single busiest month on the US marathon calendar, anchored by the Chicago Marathon, one of the World Marathon Majors, alongside a huge wave of fall races nationwide as most of the country reaches ideal race-day temperatures.
Mid-October · Midwest
Wichita, KS
- Weather
- 54°Ftypical startModelled estimate
- Field size
- ~800 runners
- Course
- Flat
- Elevation
- 150 ft gain · 0 ft net
Event: Fall Marathon
Mid-October · West Coast
Weott, CA
- Weather
- 50°Ftypical startModelled estimate
- Field size
- ~800 runners
- Course
- Flat to rolling
- Elevation
- 300 ft gain · 0 ft net
Event listed as: Marathon
Mid-October · West Coast
Snohomish, WA
- Weather
- 38°Ftypical startModelled estimate
- Field size
- ~500 runners
- Course
- Flat
- Elevation
- 100 ft gain · 0 ft net
Event: The Snohomish River Run Marathon
Mid-October · Northeast
Atlantic City, NJ
- Weather
- 51°Ftypical startModelled estimate
- Field size
- ~1,000 runners
- Course
- Flat
- Elevation
- 50 ft gain · 0 ft net
Event listed as: Marathon
Early October · Mountain West
Syracuse, UT
- Weather
- 49°Ftypical startModelled estimate
- Field size
- ~400 runners
- Course
- Flat
- Elevation
- 150 ft gain · 0 ft net
Event: Full Marathon Slow Racers - Over 6 Hrs 30 Min to finish
Mid-October · Northeast
Atlantic City, NJ
- Weather
- 51°Ftypical startModelled estimate
- Field size
- ~1,000 runners
- Course
- Flat
- Elevation
- 50 ft gain
8+ miles on the ocean Boardwalk
Mid-October · Southeast
Baltimore, MD
- Weather
- 51°Ftypical startModelled estimate
- Field size
- ~3,000 runners
- Course
- Hilly
- Elevation
- 1,200 ft gain · 0 ft net
Event listed as: Marathon
Mid-October · West Coast
Susanville, CA
- Weather
- 50°Ftypical startModelled estimate
- Field size
- ~600 runners
- Course
- Net downhill
- Elevation
- 150 ft gain · -1,300 ft net
Event listed as: Marathon
Mid-October · Mountain West
Boise, ID
- Weather
- 45°Ftypical startModelled estimate
- Field size
- ~1,000 runners
- Course
- Flat
- Elevation
- 200 ft gain
Flat course along Boise River Greenbelt
Late October · Northeast
Falmouth, MA
- Weather
- 48°Ftypical startModelled estimate
- Field size
- ~1,000 runners
- Course
- Rolling
- Elevation
- 600 ft gain
Scenic coastal roads and Nobska Light
Mid-October · Southeast
Bald Head Island, NC
- Weather
- 60°Ftypical startModelled estimate
- Field size
- ~400 runners
- Course
- Flat
- Elevation
- 100 ft gain · 0 ft net
Event: Cape Fear Marathon
Mid-October · Northeast
South Hero, VT
- Weather
- 43°Ftypical startModelled estimate
- Field size
- ~300 runners
- Course
- Rolling
- Elevation
- 350 ft gain · 0 ft net
Event listed as: Marathon
Early October · Midwest
Chicago, IL
- Weather
- 47°Ftypical startModelled estimate
- Field size
- ~45,000-50,000 runners
- Course
- Flat
- Elevation
- 250 ft gain
World Marathon Major; world-record fast
Early October · Mountain West
Colorado Springs, CO
- Weather
- 52°Ftypical startModelled estimate
- Field size
- ~800 runners
- Course
- Rolling
- Elevation
- 900 ft gain · 0 ft net
Event listed as: Marathon
Mid-October · Midwest
Columbus, OH
- Weather
- 50°Ftypical startModelled estimate
- Field size
- ~3,500 runners
- Course
- Flat to rolling
- Elevation
- 300 ft gain
Nationwide Children's Hospital patient miles
Mid-October · Midwest
Des Moines, IA
- Weather
- 48°Ftypical startModelled estimate
- Field size
- ~1,500 runners
- Course
- Rolling
- Elevation
- 500 ft gain
State Capitol grounds and Gray's Lake
Mid-October · Midwest
Detroit, MI
- Weather
- 47°Ftypical startModelled estimate
- Field size
- ~3,500-4,500 runners
- Course
- Flat
- Elevation
- 350 ft gain · 0 ft net
Crosses the US-Canada international border
Mid-October · Mountain West
Durango, CO
- Weather
- 55°Ftypical startModelled estimate
- Field size
- ~400 runners
- Course
- Hilly
- Elevation
- 800 ft gain · 0 ft net
Event: Durango Marathon
Late October · Southeast
Emerald Isle, NC
- Weather
- 59°Ftypical startModelled estimate
- Field size
- ~400 runners
- Course
- Flat
- Elevation
- 50 ft gain · 0 ft net
Event: Emerald Isle Marathon
Early October · Northeast
Hartford, CT
- Weather
- 48°Ftypical startModelled estimate
- Field size
- ~2,000 runners
- Course
- Rolling
- Elevation
- 450 ft gain · 0 ft net
Event: Eversource Hartford Marathon
Early October · Southwest
Flagstaff, AZ
- Weather
- 58°Ftypical startModelled estimate
- Field size
- ~400 runners
- Course
- Hilly
- Elevation
- 2,200 ft gain · 0 ft net
Event listed as: Marathon
Early October · Southeast
Shepherdstown, WV
- Weather
- 51°Ftypical startModelled estimate
- Field size
- ~600 runners
- Course
- Hilly
- Elevation
- 1,300 ft gain · 0 ft net
Event listed as: Full Marathon
Early October · West Coast
Girdwood, AK
- Weather
- 18°Ftypical startModelled estimate
- Field size
- ~400 runners
- Course
- Hilly
- Elevation
- 1,500 ft gain · 0 ft net
Event listed as: Full Marathon
Early October · Northeast
Corning, NY
- Weather
- 47°Ftypical startModelled estimate
- Field size
- ~2,500 runners
- Course
- Net downhill
- Elevation
- 100 ft gain · -250 ft net
Event: Marathon- Guthrie Wineglass Marathon
Mid-October · Northeast
Hartford, CT
- Weather
- 48°Ftypical startModelled estimate
- Field size
- ~2,000 runners
- Course
- Rolling
- Elevation
- 450 ft gain
Finishes under the Soldiers & Sailors Arch
Late October · Southeast
St Michaels, MD
- Weather
- 52°Ftypical startModelled estimate
- Field size
- ~500 runners
- Course
- Flat
- Elevation
- 50 ft gain · 0 ft net
Event: Historic Drawbridge Marathon
Mid-October · Midwest
Kansas City, MO
- Weather
- 52°Ftypical startModelled estimate
- Field size
- ~1,500 runners
- Course
- Hilly
- Elevation
- 1,000 ft gain
Barbecue stops, parks, and downtown landmarks
Early October · Northeast
Portland, ME
- Weather
- 45°Ftypical startModelled estimate
- Field size
- ~1,000 runners
- Course
- Rolling
- Elevation
- 600 ft gain
Casco Bay coastal vistas
Early October · Northeast
Portland, ME
- Weather
- 45°Ftypical startModelled estimate
- Field size
- ~1,000 runners
- Course
- Rolling
- Elevation
- 600 ft gain · 0 ft net
Event listed as: Marathon
Late October · Southeast
Arlington, VA
- Weather
- 52°Ftypical startModelled estimate
- Field size
- ~20,000+ runners
- Course
- Rolling
- Elevation
- 600 ft gain
"The People's Marathon"; military focus
Early October · Midwest
Milwaukee, WI
- Weather
- 46°Ftypical startModelled estimate
- Field size
- ~2,500 runners
- Course
- Flat to rolling
- Elevation
- 250 ft gain
Scenic shore of Lake Michigan
Mid-October · Northeast
Bar Harbor, ME
- Weather
- 44°Ftypical startModelled estimate
- Field size
- ~1,200 runners
- Course
- Hilly
- Elevation
- 1,200 ft gain
Acadia National Park; prime fall foliage
Mid-October · Midwest
Columbus, OH
- Weather
- 50°Ftypical startModelled estimate
- Field size
- ~3,500 runners
- Course
- Flat to rolling
- Elevation
- 300 ft gain · 0 ft net
Event listed as: Marathon
Mid-October · Northeast
Newport, RI
- Weather
- 48°Ftypical startModelled estimate
- Field size
- ~1,200 runners
- Course
- Rolling
- Elevation
- 600 ft gain
Ocean Drive past historic Gilded Age mansions
Late October · Northeast
Narragansett, RI
- Weather
- 48°Ftypical startModelled estimate
- Field size
- ~600 runners
- Course
- Rolling
- Elevation
- 500 ft gain · 0 ft net
Event listed as: Marathon
Early October · West Coast
Portland, OR
- Weather
- 42°Ftypical startModelled estimate
- Field size
- ~4,000 runners
- Course
- Rolling
- Elevation
- 600 ft gain
Bridges and scenic neighborhood route
Late October · Southeast
Mableton, GA
- Weather
- 60°Ftypical startModelled estimate
- Field size
- ~500 runners
- Course
- Rolling
- Elevation
- 300 ft gain · 0 ft net
Event: 15th Annual Silver Comet Marathon
Early October · Midwest
Empire, MI
- Weather
- 43°Ftypical startModelled estimate
- Field size
- ~500 runners
- Course
- Hilly
- Elevation
- 1,100 ft gain · 0 ft net
Event listed as: Full Marathon
Mid-October · West Coast
Spokane, WA
- Weather
- 39°Ftypical startModelled estimate
- Field size
- ~600 runners
- Course
- Hilly
- Elevation
- 1,200 ft gain
Spokane River gorge and "Doomsday Hill"
Early October · Mountain West
St. George, UT
- Weather
- 55°Ftypical startModelled estimate
- Field size
- ~5,000-6,000 runners
- Course
- Net downhill
- Elevation
- 100 ft gain · -2,560 ft net
High-speed downhill mountain descent
Early October · Northeast
Scranton, PA
- Weather
- 48°Ftypical startModelled estimate
- Field size
- ~1,500 runners
- Course
- Net downhill
- Elevation
- 150 ft gain · -950 ft net
Downhill rail trail; known for fast times
Early October · Mountain West
Fort Collins, CO
- Weather
- 49°Ftypical startModelled estimate
- Field size
- ~500 runners
- Course
- Net downhill
- Elevation
- 100 ft gain · -300 ft net
Event: The Long View Marathon
Early October · Midwest
Ann Arbor, MI
- Weather
- 47°Ftypical startModelled estimate
- Field size
- ~800 runners
- Course
- Rolling
- Elevation
- 700 ft gain · 0 ft net
Event: Marathon (26.2)
Early October · Midwest
Minneapolis-St. Paul, MN
- Weather
- 43°Ftypical startModelled estimate
- Field size
- ~8,000 runners
- Course
- Rolling
- Elevation
- 500 ft gain
"Most Scenic Urban Marathon"
Mid-October · Midwest
Grand Rapids, MI
- Weather
- 46°Ftypical startModelled estimate
- Field size
- ~1,500 runners
- Course
- Flat to rolling
- Elevation
- 250 ft gain · 0 ft net
Event listed as: Marathon