Chicago, USA

Chicago Marathon

Sunday, October 11, 2026
Flat & Fast
Lottery Entry

Course Profile

Difficulty
Flat & Fast
Terrainroad
Elevation Gain67m
Elevation Loss67m

Fast, flat single-loop course through downtown Chicago and surrounding neighborhoods. Wide streets and smooth surfaces.

Typical Weather

Temperature7°C - 18°C
Humiditymoderate

Variable fall weather. Can range from ideal cool conditions to unseasonably warm. Lake Michigan influences temperatures.

Registration

Entry TypeLottery Entry
Typically HeldSecond Sunday in October

Non-guaranteed lottery entry with approximately 40% acceptance rate. Time qualifier and charity options available. Registration opens in fall for the following year.

Official Website

What Makes This Race Special

  • 1
    One of the six World Marathon Majors
  • 2
    Flat, fast course through 29 neighborhoods
  • 3
    1.7 million spectators line the streets
  • 4
    Tour of Chicago's diverse communities
  • 5
    Start and finish in Grant Park

The Chicago Marathon is a celebration of one of America's greatest cities. Its flat, fast course winds through 29 distinct neighborhoods, each with its own character and enthusiastic spectators. The race combines elite-level competition with an incredibly welcoming atmosphere for runners of all abilities.

The Course

Starting and finishing in Grant Park along Lake Michigan, the single-loop course takes runners on a grand tour of Chicago. The route is remarkably flat, with the only elevation changes coming from highway underpasses and bridge crossings.

Neighborhood by Neighborhood

Chicago's famous neighborhoods each bring their own energy to race day:

  • Grant Park/Loop (Start) - Downtown Chicago's skyline backdrop
  • Lincoln Park (miles 5-8) - Tree-lined streets, rowdy crowds
  • Lakeview/Boystown (mile 8-9) - Legendary party atmosphere
  • Wrigleyville (mile 9) - Cubs fans cheering
  • Little Italy/University Village (miles 13-15) - Italian hospitality
  • Pilsen (mile 17-19) - Mexican-American cultural celebration
  • Chinatown (mile 21) - Dragon dancers and drummers
  • Bronzeville (mile 22-24) - Historic African-American community
  • Michigan Avenue (mile 25-26) - Sprint to the finish

Course Strategy

The course favors consistent pacing. The early miles through the Loop and North Side can feel crowded, but the streets widen as the field spreads out. The south side neighborhoods (miles 17-24) can feel more isolated, making it important to stay mentally engaged.

Why Chicago?

Chicago consistently ranks as one of the most runner-friendly major marathons. The organization is exceptional, the crowd support is legendary, and the flat course offers an honest test of your fitness without the complication of hills.

The race also showcases what makes Chicago special - it's a city of neighborhoods, each with distinct personality and pride. Running through these communities, you experience the real Chicago that tourists often miss.

Getting In

Chicago uses a non-guaranteed lottery system. If you don't get in through the lottery, there are alternative paths:

  • Time Qualifier - Meet age-graded time standards for guaranteed entry
  • Legacy Program - Run 5 Chicago Marathons for lifetime entry
  • Charity Partners - Raise funds for official charity organizations
  • International Tour Operators - Packages that include race entry

The lottery typically has better odds than Boston or London (around 40% acceptance), but demand continues to grow each year.

Race Day Tips

  • Dress for the finish, not the start - Chicago mornings can be cool, but it often warms significantly
  • The wind is real - Lake Michigan can create unpredictable gusts, especially on the lakefront
  • Save your legs for Chinatown - The crowds thin in the south side miles, but pick up again
  • Michigan Avenue is all yours - The final mile is a celebration

Train for Chicago Marathon

Get a personalized AI-powered training plan tailored to this course and your fitness level.