It's Saturday,
February 27th, 2021
User not logged in
[Run Race Header Image][Run Race logo]
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 - Silurian Spring II
Date:Friday March 19th, 2021 - 8:30 am
Location:Willow Springs
State:Illinois, United States  Go there or Go there in new browser
Post a Race:
Paleozoic Trail Runs
Silurian Spring II
[Logo: Paleozoic Trail Runs]
Ninth Annual Spring Season Paleozoic 50-Km and 25-Km
Trail Runs on the Palos Trail System!

Monday January 25th - 10:00 am CST
With respect to the continuing Coronavirus / COVID-19 pandemic our permit allows a maximum of 50 participants per day. We've met capacity for Friday, Saturday and Sunday racing. At this point we've suspended further general-public runner registration. It's possible that some runners may opt out of racing, which could open spots for others. If you'd like a chance to participate in this version of Paleozoic Trail Runs please sign up on our wait list. There is no charge to register for our Paleozoic Wait List. Wait listers will be notified once they're eligible for race participation, and it will be their responsibility to fully register for their event distance and make payment to complete their race registration.
Watch this space for registration updates!

Thursday December 3rd - 12:00 pm Noon CST
Yes, there will be a Paleozoic Trail Runs in the spring of 2021, but with precautionary measures to ensure safety for all runners, volunteers, spectators, and officials.
  • With respect to the ongoing Coronavirus/COVID-19 pandemic this season's Paleozoic Trail Runs - Silurian Spring II will be conducted under the guidelines of Restore Illinois Phase 4, as required by the Forest Preserve District of Cook County.
  • Our permit allows a maximum capacity of 50 participants per day.
  • All in attendance will be subject to no-touch temperature screening.
  • All in attendance will be required to practice 6-feet social distancing, and wear facial coverings (while not running).
  • We'll have basic personal protective equipment (PPE) on hand such as hand sanitizer, protective exam gloves, disinfecting wipes. We encourage participants to bring along their own PPE and facial coverings.
  • There will be no runner self-service at aid stations. Volunteers wearing facial masks and gloves will assist runners with hydration, nutrition, and aid.
Let's meet on the trails, have a fun race, and be safe at this version of Paleozoic Trail Runs!
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 ninth annual spring version of Paleozoic Trail Runs - Silurian Spring II, Friday - Saturday - Sunday, March 19 - 20 - 21, 2021. For your adventure we will provide:
  • Your choice of event distance... 50 kilometers or 25 kilometers.
  • Space for 150 eager runners... permit restrictions limit race participation to the first 150 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 a well-stocked aid station / checkpoint occurring each lap at 5.2-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.
  • Extremly well-earned "Ten-Time Finisher" pint glass awards for 10-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 6:00 am on Saturday December 5th, 2020 here on our RunRace Network!

Paleozoic Trail Runs - Silurian 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. Wolf Road Woods, Grove #2 serves as race start / finish area and our primary aid station.
Paleozoic Trail Runs - Silurian Spring II, Start / Finish area:
Wolf Road Woods, Grove #2
Palos Trail System
Willow Springs, IL 60480
GPS: 41.704348, -87.897167
Paleozoic Trail Runs - 2021 Spring Racecourse Map
[racecourse map: Paleozoic Trail Runs - 2020 Fall]

A variety of surfaces make up this Paleozoic racecourse. Rugged single-track dirt trails with rocks and roots comprise approximately 50% of each lap. Along the way you'll encounter a mix of wider crushed gravel paths, occasional cross-country-style grass segments, and even stretches of eroding asphalt. Compared to others in greater Chicagoland, this course should be considered as "quite hilly and rugged." Trail shoes are recommended, but not necessary especially if conditions are dry leading up to race day.
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:December 3rd, 2020 12:37 pm
Event InformationFor multiple Member Events:
Name of EventDistanceMeasurementDateStart TimeRelay MembersTeam Members
   Paleo-Silur Wait List2.00MonthsMar 19th, 20218:30 am
    Paleo-Silur 50-Km50.00KilometersMar 19th, 20218:30 am
    Paleo-Silur 25-Km25.00KilometersMar 19th, 20219:30 am
    Paleo-Silur Volunteer9.00HoursMar 19th, 20217:30 am
Director Information
button: Email RDs
Name of Race DirectorEmail AddressPhone Number
Bill Thombill@runrace.net312 316-4698 (cell)
Š2004-2021 : All rights reserved
Terms and Conditions