Berlin vs Chicago Marathon — Which Is the Faster PB Course?
Berlin vs Chicago: the two flattest, fastest World Majors compared. Course geometry, lottery odds, weather risk, and which to pick for a PB or BQ.
Quick Comparison
| Feature | 2026 Berlin Marathon - Sep 27 | 2026 Chicago Marathon - Oct 11 |
|---|---|---|
| Country/Region | Germany | USA |
| Month | September | October |
| Avg Temperature | 12-18°C | 8-16°C |
| Course Type | Flat | Flat |
| Elevation | ~30m | ~20m |
| Field Size | 50,000 | 54,000 |
| Entry | Lottery + Time | Lottery + Time |
| World Major | Yes | Yes |
| BQ Course | Yes | Yes |
| Crowd Support | Excellent | Excellent |
Detailed Comparison
Course profile: which is the faster PB course?
On paper these are the two flattest World Marathon Majors — Berlin at roughly 30m of total elevation change, Chicago even flatter at around 20m. Neither has a meaningful hill, so the real difference is course geometry, not gradient. Berlin runs on wide, smooth blacktop through the city's grand avenues and barely sees a sharp turn until the final kilometres, when the field is already strung out. That uninterrupted rhythm is why Berlin was for years the sport's fastest course and the venue where Eliud Kipchoge ran 2:01:09 in 2022 — a record that has since been broken elsewhere, but the pedigree remains.
Chicago is laid out on a downtown street grid with around 36 ninety-degree turns, many of them early while the field is still packed shoulder to shoulder. Each turn costs a half-stride of momentum, and the concrete sections feel firmer underfoot than Berlin's asphalt. Chicago is still blisteringly fast on the right day — Conner Mantz set an American record of 2:04:43 here in 2025, and Kelvin Kiptum ran 2:00:35 in 2023 — but you spend more energy navigating the city than you do in Berlin. For a pure metronome-pacing PB, Berlin has the marginal edge; for a fast race with raw American energy, Chicago delivers.
Entry strategy: two of the best lottery odds in the Majors
If your goal is simply to get a Major bib, Berlin and Chicago are effectively tied as the easiest to enter. Chicago's drawing took roughly 160,000 applicants for 2025 and accepts around a third of direct entrants — far better odds than London, New York or Tokyo. Berlin runs a similar lottery in autumn each year. Both also reward fast runners: Berlin offers a qualifying-time entry verified against the Abbott Age Group rankings, while Chicago adds a time-qualifier plus a legacy route (five finishes inside a ten-year window earns guaranteed entry) and the usual charity bibs. If you have a competitive time, use it — a guaranteed pathway beats lottery luck at either race.
Weather and race-day timing
This is where the two diverge most. Berlin runs in late September (12-18C) with relatively stable, low-humidity conditions — pleasant for spectators, occasionally a touch warm for record attempts but rarely dangerous. Chicago runs two weeks later in mid-October (8-16C), on average a little cooler, but the wildcard is wind off Lake Michigan and the city's volatility: the infamous 2007 edition was halted mid-race because of dangerous heat. Get a cool, calm Chicago morning and it is one of the fastest courses on earth; get a windy one along the lakefront and the grid turns into a grind. Berlin is the safer bet for predictable conditions; Chicago has a higher ceiling and a higher floor of risk.
Running both in the same year
Berlin (Sept 27, 2026) and Chicago (Oct 11, 2026) sit just two weeks apart, which tempts ambitious runners into a back-to-back. It is physically possible but rarely advisable: two weeks is not enough to recover the deep muscle damage of an all-out marathon, so the second race will almost certainly be slower and the injury risk climbs. If you insist, pick one as your A-race and treat the other as a controlled long run or a celebration jog. Most runners are better off banking Berlin one year and Chicago the next — and there is a neat symmetry to chasing a flat PB on both. Build a realistic plan for the gap with our Race Time Predictor and training plan.
Who should pick which
The metronome PB chaser should lean Berlin — fewer turns, smoother surface and the most reliable record conditions in the Majors make it the cleaner canvas for a goal time. The runner targeting a Boston qualifier can use either with confidence; Chicago's enormous pace-group culture and slightly better lottery odds make it the more practical American option. The Six Star collector who wants to bank a Major with minimal entry stress should apply to Chicago first — it is the most attainable big-city Major lottery. The traveller wanting atmosphere will find Chicago's wall of crowd noise through the neighbourhoods hard to beat, while Berlin rewards you with the Brandenburg Gate finish. Confirm your target pace either way with the Pace Calculator.
Explore Each Marathon
2026 Berlin Marathon - Sep 27
Live countdown, race info, and training tools.
View Countdown →2026 Chicago Marathon - Oct 11
Live countdown, race info, and training tools.
View Countdown →Frequently Asked Questions
Is Berlin or Chicago Marathon faster for a PB?
Both are among the fastest courses in the world and almost identically flat (Berlin ~30m of elevation change, Chicago ~20m). The deciding factor is geometry: Berlin runs on wide, smooth roads with almost no sharp turns until the end, while Chicago's downtown grid has around 36 ninety-degree turns that nibble at your momentum. Berlin has the marginal edge for a metronome-paced personal best, but on a cool, windless day Chicago is every bit as fast. Plan your target with our Pace Calculator.
Does Berlin Marathon still hold the world record?
No. Berlin was for years the fastest marathon on earth — Eliud Kipchoge ran 2:01:09 here in 2022 — but the men's world record now stands at roughly 1:59:30, set by Sabastian Sawe at London in April 2026. Berlin keeps its record pedigree and reputation as a record-friendly course, but it no longer holds the mark itself.
How do Berlin and Chicago Marathon entry processes compare?
Both run lotteries with some of the best odds in the Majors. Chicago drew about 160,000 applicants for 2025 and accepts roughly a third of direct entrants; it also offers a time qualifier, a legacy route (five finishes in a ten-year window), and charity bibs. Berlin runs a similar autumn lottery plus a qualifying-time entry checked against the Abbott Age Group rankings. If you have a fast time, the guaranteed pathway beats relying on the draw at either race.
What is the weather difference between Berlin and Chicago Marathon?
Berlin runs in late September at 12-18C with stable, low-humidity conditions. Chicago runs in mid-October at 8-16C — on average a touch cooler, but more volatile, with wind off Lake Michigan as the main wildcard. The 2007 Chicago race was famously halted mid-event because of dangerous heat. A cool, calm Chicago morning is one of the fastest anywhere; Berlin is the safer bet for predictable conditions. Check the forecast with our What to Wear tool.
Can I run both Berlin and Chicago Marathon in the same year?
The races sit just two weeks apart (Sept 27 and Oct 11 in 2026), so it is physically possible but rarely wise — two weeks is not enough to recover from an all-out marathon, so the second race will be slower and your injury risk rises. If you attempt it, race one hard and treat the other as a controlled long run. Most runners get more from running Berlin one year and Chicago the next. Map out the gap with our Race Time Predictor.
Should I choose Berlin or Chicago for a Boston qualifier?
Either course is an excellent place to chase a Boston qualifying time — both are flat and fast with deep pace groups. For runners based in or travelling within North America, Chicago is the more practical pick thanks to its huge pace-group culture and strong lottery odds; for those already heading to Europe, Berlin's smoother, straighter course is marginally faster. Confirm the standard you need with our Boston Qualifying Calculator.
Which has the better race-day atmosphere, Berlin or Chicago?
Both are loud, festive big-city Majors. Chicago's route threads through distinct downtown neighbourhoods with near-continuous crowd noise and a finish in Grant Park. Berlin sends you down its grand boulevards to the unforgettable Brandenburg Gate finish. Chicago edges it for sustained crowd density and neighbourhood variety; Berlin wins on the iconic finish-line landmark. Either way, you will not run alone.
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