Training Plan
Chicago Marathon Training Plan
Training specifically for the Chicago Marathon: a plan that accounts for the course profile, typical weather conditions, and the race-specific fitness that separates prepared runners from generic marathon fitness. The marathon is fundamentally an aerobic event with a metabolic ceiling problem. Running out of glycogen — 'the wall' — is a fuelling and pacing failure, not a fitness failure. The training goal is to build a large enough aerobic base, develop fat oxidation efficiency, and practice race-pace running so the body knows what's coming on race day.
A course built for fast times
The Chicago Marathon is one of the flattest major marathon courses in the world — a net elevation change of just 35 feet across 26.2 miles. This rewards runners who have developed genuine marathon-pace efficiency over those who rely on downhills to make up time. Consistent marathon-pace long runs are the cornerstone of Chicago preparation.
October conditions and how to prepare
Chicago's early October date means autumn conditions that can swing from warm to cold within a single year. Recent editions have seen temperatures from the mid-40s to the low 70s Fahrenheit. Train across a range of conditions, learn your warm-weather pacing adjustments, and have a race plan for each scenario.
Pacing a flat, fast course
The biggest mistake on a flat course is treating the flatness as permission to go out fast. Without hills to force a natural pace modulation, Chicago runners must provide their own discipline. An even split — running the second half within 60–90 seconds of the first half — consistently produces better finish times than a positive split with a fade.
Let Coach Baz build your personalised marathon plan
This is the structure. Daash's AI coach, Coach Baz, personalises it around your schedule, current fitness, and goal — then adapts it week by week based on how training is actually going.
Get my personalised planSample training week
This is a representative week from the middle of the plan — not the first week (which starts lighter) or the peak week (which is harder). It gives you a sense of the session structure and weekly rhythm.
| Day | Session | Notes |
|---|---|---|
| Monday | Rest | The long run demands real recovery |
| Tuesday | Easy run 45–55 min | Aerobic base building |
| Wednesday | Marathon-pace run: 8 miles with middle 4–5 miles at goal marathon pace | Race-specific fitness development |
| Thursday | Easy run 40–50 min | Recovery pace, no pressure |
| Friday | Easy run 30–40 min or rest | Freshen legs for the weekend |
| Saturday | Medium-long run: 12–14 miles easy | Builds aerobic volume, not as demanding as Sunday |
| Sunday | Long run: 18–20 miles easy | The cornerstone of marathon fitness |
Why use Daash for this training plan
A static plan — PDF, spreadsheet, or fixed programme — assumes your life runs on schedule. Coach Baz adapts week by week based on what you report: missed sessions, tired legs, travel, illness, or a breakthrough workout that means you can handle more. The result is training that fits the runner you actually are, not the one who never has bad days.
- Weekly plan adapts based on how your training actually went
- Garmin integration: structured workouts sent directly to your watch
- Conversational coaching — ask Coach Baz anything, any time
- No rigid race date required — set the goal, let the plan follow
Frequently asked questions
How many days per week does this marathon plan require?
Most sessions in this plan run four to five days per week, including one quality session, a long run, and easy aerobic running. The plan is designed to be adjustable — Coach Baz can restructure around your available days each week.
Do I need a GPS watch to follow this marathon training plan?
A GPS watch or running app is helpful for tracking pace and distance, but not strictly required. Effort-based running (using a scale of 1–10 perceived exertion) works well for easy runs. For quality sessions where specific paces matter, a watch becomes more valuable.
What should I eat before a long run?
For runs under 60–75 minutes, eating beforehand is optional. For longer runs, a light carbohydrate-based meal two to three hours before the session — oats, toast with banana, or a rice-based option — provides fuel without gastrointestinal issues. Avoid high-fat, high-fibre, or unfamiliar foods on long run mornings.
How does Daash adapt the plan if I miss a session?
Coach Baz adjusts your upcoming week based on what you report. If you missed a session due to illness, fatigue, or life events, log it in Daash and the next week's plan will reflect that reality — redistributing sessions, reducing volume if needed, or modifying the upcoming quality work to account for the missed training.
Do I need to take gels or nutrition during training for a marathon?
For any long run over 90 minutes, practising race nutrition is valuable. Train with the gels, chews, or drinks available at your target race so your gut is adapted before race day. Do not try a new nutrition product for the first time on race morning.
Let Coach Baz build your personalised marathon plan
This is the structure. Daash's AI coach, Coach Baz, personalises it around your schedule, current fitness, and goal — then adapts it week by week based on how training is actually going.
Start with Coach BazRelated training plans
- Marathon Training Plan for Beginners
Your first 26.2 in 18 weeks. A beginner marathon plan that prioritises aerobic base, injury-free long run progression, and the mental resilience to cross the finish line.
- Marathon Training Plan for Intermediate Runners
Move from marathon finisher to marathon racer. This intermediate plan introduces marathon-pace long runs, mid-week quality, and a structured 3-week taper.
- Advanced Marathon Training Plan
A serious marathon block for experienced runners: 70+ mile peak weeks, back-to-back long runs, lactate threshold work, and race-specific fitness to run a fast 26.2.