Byline Bank Chicago Spring Half Marathon
Chicago, United States of America · Sunday 16 May 2027
Difficulty Calculator
Adjusted Time
1:43:55
Time difference: -1.1 minutes compared to an average road half marathon.
Course Details
Typical Race-Day Weather
Average for this date over the last 8 years.
How hard is Byline Bank Chicago Spring Half Marathon?
On our difficulty model, Byline Bank Chicago Spring Half Marathon plays about 1 minute faster than an average road half marathon for a 1:30 runner. It ranks #415 hardest of 627 half marathons we analyse, and #140 of 186 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Byline Bank Chicago Spring Half Marathon?
Estimated finish times on this course versus the same effort on an average road half marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Byline Bank Chicago Spring Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 1:28:45 | −01:15 |
| 1:45:00 | 1:43:55 | −01:05 |
| 2:00:00 | 1:59:06 | −00:54 |
| 2:15:00 | 2:14:18 | −00:42 |
| 2:30:00 | 2:29:30 | −00:30 |
| 2:45:00 | 2:44:43 | −00:17 |
| 3:00:00 | 2:59:56 | −00:04 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Byline Bank Chicago Spring Half Marathon 2027 Course Analysis
Byline Bank Chicago Spring Half Marathon is a half marathon held in Chicago, United States of America. It is scheduled for Sunday 16 May 2027. The course is run on road surface with 47m of total climbing, with its high point near 188m above sea level. For registration and full race details, visit the official Byline Bank Chicago Spring Half Marathon website.
Climbing
At 47m of total climbing, it is flatter than 85% of the 627 half marathons we rate. That makes it one of the flatter courses we track, well suited to an even pace.
Race-day weather
Over the last 8 years this May date has averaged a high of 24°C and a low of 12°C. That is warmer than 69% of the half marathons we track. On our model the expected temperature costs a 1:30 half marathoner about 2 minutes against the same course on a cool 12°C day.
On 16 May over the last 8 years, the high ranged from 13°C (2020) to 30°C (2025), so pack for either. It rained on 6 of those 8 days.
| 16 May | High | Low | Rain | Wind |
|---|---|---|---|---|
| 2026 | 29°C | 17°C | 3 h | 20 km/h |
| 2025 | 30°C | 17°C | 1 h | 34 km/h |
| 2024 | 23°C | 9°C | 4 h | 25 km/h |
| 2023 | 26°C | 8°C | dry | 28 km/h |
| 2022 | 25°C | 12°C | 1 h | 30 km/h |
| 2021 | 21°C | 9°C | dry | 19 km/h |
| 2020 | 13°C | 7°C | 2 h | 22 km/h |
| 2019 | 27°C | 12°C | 4 h | 37 km/h |
Daily weather for the race location (Open-Meteo archive). Wind is the day's peak.
Looking for an easier marathon or a tougher challenge? You can also compare Byline Bank Chicago Spring Half Marathon against other half marathons to find the right race for your goals.
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