BestRacesroad · 2 4-mile no wetsuit · 2 4-mile wetsuit · 1/2-mile no wetsuit · and 1 more
Central Illinois Open Water Swim
Build your free race-day pace plan| Distances | 2 4-mile no wetsuit, 2 4-mile wetsuit, 1/2-mile no wetsuit, 1/2-mile wetsuit |
| Surface | road |
| USATF certified | No |
| Boston qualifier | No |
From the race's RunSignup listing, last updated July 26, 2026.
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Race-day weather
What the weather did on June 27 in each of the last 5 years, measured at Normal 4ne, 5.1 miles from Hudson.
| Year | High | Low | Rain |
|---|---|---|---|
| 2026 | 71°F | 64°F | 0.50 in |
| 2025 | 95°F | 73°F | 0.05 in |
| 2024 | 82°F | 59°F | none |
| 2023 | 80°F | 61°F | none |
| 2022 | 78°F | 54°F | none |
Daily highs and lows, not start-line temperatures: most races start in the cool of the morning, closer to the low. Source: NOAA National Centers for Environmental Information, GHCN-Daily.
Stay near Hudson
Hotels and rentals in and around Hudson, IL.
Preset to race weekend, Jun 26 – 28.
Bookings made through this map may earn BestRaces a commission. It has no effect on rankings (how ranking works).
Race Pace Analyzer beta
Build your Central Illinois Open Water Swim splits
This one already knows the course. Give it your goal time and it gives you every split to the finish, adjusted for this race's terrain and its usual race-morning temperature, plus a fueling plan and a check on whether the goal fits your fitness. It's free, and there's nothing to sign up for.
- Already loaded
- 2 distances
- ≈64°F on June race mornings
| Mile | Split | Elapsed |
|---|
Training paces for this goal
The everyday paces that build the fitness behind your goal, worked out from your target with the Daniels VDOT model. Save these for your next training block.
Treat these as a guide. Run easy days by feel, and adjust for heat, hills and how your legs feel that day.
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