Chicago Marathon training plan: course, start dates, and plan options
Chicago, ILOctober 11, 2026
Chicago is the flat, fast American major: a single loop out of Grant Park through more than two dozen neighborhoods, wall-to-wall crowds, and a course where world records have fallen. If you have a time goal, this is a course that will let you chase it.
Answer a few questions, choose your plan, then create your account and subscribe to start training in Stride.
The trade is that Chicago gives you no excuses and no terrain to hide behind; pacing discipline and a well-built aerobic base decide your day. Stride matches you to the plan a coach would pick for that job and maps every week from today to the start corrals.
16 days to race day
Chicago Marathon · October 11, 2026 · about 2 weeks out
Your plan starts with your race and works backward. Every week lands on a real calendar, with race day at the end.
When to start training for the Chicago Marathon 2026
Race day is October 11, 2026, which is 16 days from today. Counting back from that date, here is when each length of build starts.
- 30-week buildWindow has passed
- 24-week buildWindow has passed
- 18-week buildWindow has passed
- 16-week buildWindow has passed
- 12-week buildshortest Stride acceptsWindow has passed
You have about 2 weeks until race day, which is inside the shortest build Stride matches. Stride won’t pretend there is room for a responsible full build. You can still use the finder to check your starting point, then choose a later race if this runway is too short.
Answer a few questions, choose your plan, then create your account and subscribe to start training in Stride.
Let’s find the plan for you.
Your race, current mileage, longest run, marathon experience, and available days decide the best fit. Stride maps the plan you choose to race day at the Chicago Marathon.
- Stride Run-Walk FinisherThree sessions a week with planned walk breaks, cover the full distance before race day.
- Stride First MarathonThe classic four-day first-marathon build: easy running and one weekly long run, no speedwork.
- Stride First Marathon PlusA first-marathon build with a little more volume and weekly race-pace miles.
- Stride 6-Day FinisherFinish your first marathon on frequency: six easy-leaning runs a week, no monster long runs.
- Stride 5-Day Pace BuilderFive days a week with race-pace runs before your long runs, built for a mid-pack time goal.
- Stride 6-Day RhythmSix days a week with three quality sessions, steady fatigue that teaches you to finish strong.
- Stride Time-Based FoundationFive time-based runs a week, mostly easy, the injury-averse way to a strong finish.
- Stride Time-Based BuilderSix time-based runs a week at a strict 80% easy / 20% hard split, chase a time goal without breaking.
- Stride 3-Day Cross-TrainThree runs plus two cross-training days over 24 weeks, marathon fitness on a busy schedule.
- Stride 3-Day QualityExactly three hard runs plus two mandatory cross-training sessions, every workout counts.
- Stride 6-Day CumulativeThe six-day cumulative-fatigue build with quality from week two, for PR chasers with a base.
- Stride Threshold 55The serious BQ/PR build to 55 miles a week: threshold work, medium-long runs, and 20-milers.
- Stride Threshold 70The high-mileage BQ/PR build to 70 miles a week for veterans with a deep base.
- Stride 2-Quality FlexTwo fixed quality sessions a week, everything else flexible easy running, fits any schedule.
Answer a few questions, choose your plan, then create your account and subscribe to start training in Stride.
Choose your Chicago Marathon training window.
Compare 12, 16, 18, and 20 weeks counted back from race day. The 18-week option includes the complete four-day schedule.
The course: a flat loop through 29 neighborhoods
From Grant Park the course sweeps north through River North and Lakeview, back through the Loop, west and south through Pilsen, Chinatown, and Bronzeville, and home along Michigan Avenue. It is genuinely flat; the only “hill” anyone mentions is the short rise on Roosevelt Road a few hundred meters from the finish, which arrives at the exact moment you least want it.
One Chicago-specific quirk worth planning for: GPS watches are unreliable among the downtown skyscrapers, especially early. Runners chasing a time goal should know their splits and use the course clocks or manual laps rather than trusting instant pace off the wrist in the Loop.
How to train for Chicago
Flat and fast means rhythm. Chicago rewards long runs with sustained goal-pace segments; the ability to lock a number and hold it for an hour-plus is the entire skill. Stride’s time-goal builds put that work in your week at the right dose for your volume history.
It’s an October race, so you’ll build through summer heat and race in (usually) cool air, though Chicago Octobers have served up everything from 35°F to 80°F. Train by effort, plan clothing for a range, and rehearse fueling at goal pace, because a flat course lets you run fast enough to make your stomach the limiter.
Getting in
Chicago is an Abbott World Marathon Major. Most of the field enters through a drawing, with guaranteed entries for runners with fast qualifying times, charity fundraisers, and legacy finishers. If you're in the drawing pool, plan your training season with a backup race in mind until results land.
Chicago Marathon questions, answered.
How long do I need to train for the Chicago Marathon?
Most Stride marathon plans run 12 to 20 weeks depending on your base and goal. Get matched in the app and every week from today to race day in Grant Park gets mapped, long runs, step-back weeks, and taper included.
Is Chicago a good marathon for a PR or a BQ?
One of the best in the world. The course is flat, the crowds carry you, and October in Chicago is usually cool. If you pace evenly and your buildup included real goal-pace work, Chicago will give you everything your fitness has.
Why does everyone say not to trust GPS in Chicago?
The downtown skyscrapers bounce the signal, so wrist pace can read wildly wrong in the Loop, especially over the first miles. Know your target splits, use the course clocks, and don't panic-surge because your watch says you're slow.
Is the Chicago Marathon good for first-timers?
Yes: flat terrain, enormous crowd support, and aid roughly every mile make it one of the friendliest majors for a debut. Tell Stride it's your first marathon and you'll get a conservative first-finish build, not a time-chasing one.
When should I start training for the Chicago Marathon 2026?
Race day is October 11, 2026. Counting back from that date, a 20-week build starts around May 24, 2026, a 16-week build around June 21, 2026, and a 12-week build around July 19, 2026. Already inside that window? Stride maps a plan from today to race day, whatever the runway.
How does Stride's Chicago Marathon plan work?
Download the app, pick the Chicago Marathon as your race, and answer a few questions about your recent running and your weekly schedule. Stride matches you to one of 14 marathon plans, maps every week from today to October 11, 2026, adjusts when life gets in the way, and puts you in a feed of runners training for the same race.
Choosing a training app?
A Chicago Marathon buildup is months of your life. See how Stride compares before you commit it to an app.
Find your plan.
Your race, current mileage, recent longest run, goal, and run days determine which plans rank first. Choose one and subscribe, then open every workout in Stride.