Illinois · 50 Mile · 50K · Marathon
Des Plaines River Trail Races
Des Plaines River Trail Races is a 50 Mile, 50K, marathon and 1/2 Marathon event held in Lake County, Illinois. Its next confirmed date is Saturday, October 9, 2027. About 225 runners take part across all distances.
- Race day
- October 9, 2027
- Location
- Lake County, IL
- Field size
- ~225 runners
Race details
- Date
- Saturday, October 9, 2027
- Location
- Lake County, Illinois
- Distances
- 50 Mile, 50K, Marathon, 1/2 Marathon
- Field size
- About 225 runners
- Course
- Very flat crushed-limestone trail; marathon ~295 ft gain/loss
- Registration
- ultrasignup.com
- Official website
- desplainesrivertrailraces.com
Registration, course & weather
- Start time
- 8:00 AM CDT
- Course profile
- Out-and-back course; Trail surface; 295 ft gain, 295 ft loss (official course data); USATF certified; Boston qualifier
- Typical race-day weather
- about 46°F at the start, 70% humidity, 6 mph wind (based on the 2021 race day, measured near the city center rather than the exact start line; Open-Meteo ERA5, checked October 11, 2026)
About the Des Plaines River Trail Races
Des Plaines River Trail Races in Lake County, IL.
More marathons in Illinois
Coming up next, by confirmed date.
-
Springfield Marathon & Harvest Wind Half Marathon & 10KNew Berlin, ILMarathonHalf Marathon10K ~1,403 runners
-
Chicagoland Spring Marathon, Half Marathon & 10KSchaumburg, ILMarathonHalf Marathon10K ~6,000 runners
More upcoming races in Illinois
Keep exploring
- All races in Illinois
- 5Ks in Illinois 190 upcoming races
- 10Ks in Illinois 68 upcoming races
- Half Marathons in Illinois 37 upcoming races
- Marathons in Illinois 12 upcoming races
- Half Marathons in the United States 1,828 upcoming races
- Marathons in the United States 649 upcoming races
- Fall Marathons
- October Marathons
- October races in Illinois
- Marathons in Wisconsin 17 upcoming races
- Marathons in Missouri 14 upcoming races
- Marathons in Indiana 12 upcoming races
- Marathons in Iowa 9 upcoming races
Guides from the RaceRove blog
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Des Plaines River Trail Races: common questions
- When is the Des Plaines River Trail Races?
- The next confirmed date is Saturday, October 9, 2027.
- Where is the Des Plaines River Trail Races held?
- In Lake County, Illinois.
- What distances does the Des Plaines River Trail Races offer?
- 50 Mile, 50K, Marathon and 1/2 Marathon.
- How many people run the Des Plaines River Trail Races?
- About 225 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Des Plaines River Trail Races?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- What time does the Des Plaines River Trail Races start?
- 8:00 AM CDT.
- What is the course like at the Des Plaines River Trail Races?
- Out-and-back course; Trail surface; 295 ft gain, 295 ft loss (official course data); USATF certified; Boston qualifier.
- What is race-day weather usually like at the Des Plaines River Trail Races?
- about 46°F at the start, 70% humidity, 6 mph wind (based on the 2021 race day, measured near the city center rather than the exact start line; Open-Meteo ERA5, checked October 11, 2026).
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.