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The information of your selected race is detailed here. Information is posted and  managed by race directors. Although information listed here is assumed to be accurate it's a good practice to confirm with a race director or  specific race website before planning to attend a race!
Race Information
Race Name:Paleozoic Trail Runs - Ordovician Spring II
Date:Saturday March 23rd, 2024 - 8:30 am
Location:Willow Springs
State:Illinois, United States  Go there or Go there in new browser
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Paleozoic Trail Runs
Ordovician Spring II
[Logo: Paleozoic Trail Runs]
Twelfth Annual Spring Season Paleozoic 50-Km and 25-Km
Trail Runs on the Palos / Sag Valley Trail Systems!

Sunday March 17th - 10:30 pm CDT
Race week is upon us and we're looking forward to seeing all Paleozoic runners and volunteers this Saturday at the Palos Trail System, Forest Preserve District of Cook County!  During the course of this week two email alert messages will be sent to all registered participants; Tuesday and Friday.  Alerts will include race-week details, rules of competition, and updated trail conditions.  Please watch for these race alerts to arrive via email. All packet pickup will take place onsite at our start/finish area, Pioneer Woods, Grove #2 on race morning, beginning at 7:30 am CST.

Tuesday February 27th - 2:30 pm CST
Want to preview the racecourse this weekend? Meet Paleozoic veteran, Brian Sheridan on Sunday March 3rd at 8:00 am. A 5-time finisher of Paleo 50-Km, Brian invites all to join him on a 1-lap tour of this season's racecourse. One full lap = 25 kilometers; if that's too far Brian will point out a return trip short-cut to reduce the total distance to ~10.3 miles. Plenty of parking at the start/finish area of Pioneer Woods Grove #2 (see map below). No need to RSVP... just show up and run as far or as little as you'd like!

Journey back in time to this rollicking run along forested, unpaved paths of our Palos / Sag Valley Trail Systems within the Cook County Forest Preserve - Regions 6 / 7.  We've charted a stimulating course that's sure to satisfy your primordial instinct to "go long."  Are you up to the challenge?  Choose your distance wisely... take your training seriously... then come race day, it's "finish or fossilize!"
Please join us for our twelfth annual spring version of Paleozoic Trail Runs - Ordovician Spring II, Saturday March 23, 2023. For your adventure we will provide:
  • Your choice of event distance... 50 kilometers or 25 kilometers.
  • Space for 200 eager runners... permit restrictions limit race participation to the first 200 registrants, which is a total combined count of participants from both events. It's possible that we'll meet capacity, so don't wait too long before committing (hint  : ).
  • An accurately measured, clearly-marked course, with well-stocked aid stations / checkpoints occurring each lap at 7.775-mile intervals.
  • Chip timing & scoring with RunRace Webcasting and near realtime Results for all runners.
  • Paleozoic Trail Runs Finisher Medals with colorful Lanyards for all participants... that is, those who "did not fossilize."
  • Special Customized Crystal awards to Top Overall and Top Masters runners for both sexes in each event.
  • Age Group "Made the Podium" pint glass awards to top finishers in 10-year divisions for both sexes in each event.
  • Way-to-go "My First Ultra" pint glass awards for first-time ultra finishers (50-Km participants).
  • Well-earned "Five-Time Finisher" zipper-draw-string shoe bag for 5-time finishers of Paleozoic Trail Runs.
  • Extremely well-earned "Ten-Time Finisher" pint glass awards for 10-time finishers of Paleozoic Trail Runs.
  • Only twice ever-earned "Fifteen-Time Finisher" ball cap in your choice of black or maroon for 15-time finishers of Paleozoic Trail Runs.
  • Our racecourse is pre-approved by the Forest Preserve District of Cook County (permit pending ).
General public registration is set to open at Noon, 12:00 pm on Wednesday November 15th, 2023 here on our RunRace Network!
Paleozoic Trail Runs - Ordovician Spring II will take place entirely within the Palos Trail System, Region 6 of the Forest Preserve District of Cook County, which is located approximately 22 miles southwest of downtown Chicago. Pioneer Woods, Grove #2 serves as race start / finish area and our primary aid station.

Paleozoic Trail Runs - Ordovician Spring II, Start / Finish area:
Pioneer Woods, Grove #2
10218 107th St
Willow Springs, IL 60480
GPS: 41.695729, -87.868920

A variety of surfaces make up our Paleozoic north racecourse.  Wide crushed gravel paths comprise about 40% of this course.  Along the way you'll encounter a mix of narrower, more rugged dirt trails, occasional grass segments, and even stretches of eroding asphalt.  The non-crushed gravel sections can be more-than-moderately rocky with occasional stray roots.  Compared to most others in greater Chicagoland, our Paleozoic racecourse should be considered as "quite hilly."  Trail shoes are recommended, but not necessary, especially if conditions are dry leading up to race day.  The course will be well-marked, with fully stocked aid stations at ~7.77-mile intervals, plus an unmanned / water-only station near midpoint of each half-lap.  There will be two (2) road crossings per lap, policed by FPDCC personnel.  Each lap is 25 kilometers (~15.53 miles) in length.

Paleozoic Trail Runs - Ordovician Spring II
Our North Racecourse Map
[racecourse map: Paleozoic Trail Runs north racecourse]

Weather forecast: National Weather Service

[Logo: USA Track & Field][Logo: USATF Sanction]Paleozoic Trail Runs will be sanctioned by USA Track & Field. You may visit the USATF website by clicking either logo image.

Posted:November 15th, 2023 8:45 am
Last Update:January 30th, 2024 9:30 pm
Event InformationFor multiple Member Events:
Name of EventDistanceMeasurementDateStart TimeRelay MembersTeam Members
    Paleo-Ord 50-Km50.00KilometersMar 23rd, 20248:30 am
    Paleo-Ord 25-Km25.00KilometersMar 23rd, 20249:30 am
   Paleo-Ord Volunteer9.00HoursMar 23rd, 20247:30 am
Director Information
button: Email RDs
Name of Race DirectorEmail AddressPhone Number
Bill Thombill@runrace.net312 316-4698 (cell)
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