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Event Organizer1 event
Optimist Club of Erie, Colorado
3038954197
Events organized by Optimist Club of Erie, Colorado
1 event
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Sat, Oct 31, 2026 at 7:30 AMSee full details
The world-famous Eerie Erie is a Halloween themed 5k and 10k race that runs through historic downtown Erie and takes advantage of our beautiful trail system that weaves along the Coal Creek open space areas. The 10k passes by scenic Pleasant Hill Cemetery with panoramic views and where friendly spirits can’t wait to visit this year’s runners.
The Eerie Erie is an official BOLDERBoulder Qualifier event.
Attention
You must register by October 19 at 12:00pm in order to get a shirt.
Any registrations after that date/time will not receive a shirt
A Great Cause!
Eerie Erie is the primary fundraiser for the Optimist Club of Erie, a non-profit organization whose sole mission is to benefit the children of our community by funding youth-specific events, programs, and activities throughout the year. You can learn more about the Optimist Club of Erie at www.erieoptimists.org.
Thank you to our sponsors:
Germany Law Firm | United Power
Event details and schedule
2026 Course Routes
5k Course Route (.pdf)
10k Course Route (.pdf)
** You must register by October 13 at to receive a shirt. All registrations after that day/time will not include a shirt.
On-site registration: 7:30am - 9:00am
Packet pick up: 7:30am - 9:15am
10k Start: 9:30am**
5K Start: 9:50am**
*Registration fees are $5 more for on-site, race day registration
** Start times are subject to change - please check https://erieoptimists.org/eerie-erie/ for the latest information.
Races nearby
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Distance: 16 km from ErieThu, Jul 23, 2026 at 4:30 PMSee full details
Fun for all, from newcomers of any age racing for the first time to veteran competitors looking to test their fitness, all in a friendly, welcoming environment.
We are back at CU Potts Field again offering a full schedule of events.
BRR Members Save $5 off adult pricing!
Use the email address associated with your membership. Non-Members can easily join in the registration process to immediately save.
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Distance: 6.8 km from ErieSat, Jul 25, 2026 at 11:00 AMSee full details
Get ready for a functional fitness challenge built for all abilities.
Cerox is back! This time you can choose between Cerox or Cerox Iron.
You’ll take on 8 fitness zones designed to test your endurance, strength, and grit. Choose your level of challenge:
Cerox: The event will feature 8 fitness zones plus running.
Cerox Iron: The same zones as the classic Cerox event, but without the running.
You can sign up as an individual or with a partner team. Teams can divide the zone work however they choose.
Estimated Wave Time:
11 AM: Cerox Individual
12 PM: Iron Individual
1 PM: Cerox Teams
2 PM: Iron Teams
Get your tickets now and be part of the action on February 28th!
Cerox Workout:
400M Run
Zone 1: 400M Row Erg
400M Run
Zone 2: 30 Deadlifts - 155/105
400M Run
Zone 3: 400M Ski Erg
400M Run
Zone 4: 20 Sandbag Over 4' Bar - 100/70
400M Run
Zone 5: 75M Walking Lunges - RAM 55/33
400M Run
Zone 6: 200M Farmers Carry - 2x 60's/ 40's
400M Run
Zone 7: 30 Cal. Echo Bike
400M Run
Zone 8: 30 Burpees to Plate
Cerox Iron Workout:
Zone 1: 400M Row Erg
Zone 2: 30 Deadlifts - 155/105
Zone 3: 400M Ski Erg
Zone 4: 20 Sandbag Over 4' Bar - 100/70
Zone 5: 75M Walking Lunges - RAM 55/33
Zone 6: 200M Farmers Carry - 2x 60's/ 40's
Zone 7: 30 Cal. Echo Bike
Zone 8: 30 Burpees to Plate
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Distance: 16 km from ErieThu, Aug 06, 2026 at 4:30 PMSee full details
NO Race Day Registrations
Fun for all, from newcomers of any age racing for the first time to veteran competitors looking to test their fitness, all in a friendly, welcoming environment.
Held at the Historic Potts Field, home of the University of Colorado Track & Field Team, the facilities offer the full range of track and field events and is one of the only meets in Colorado that offer a chance to run the Steeplechase or throw the javelin.
If you've been wanting to try a track race and run in the footsteps of CU stars such as Jenny Simpson, Emma Coburn, Joe Klecker, Val Constien, Dathan Ritzenhein, Alan and Shayne Culpepper, and Kara and Adam Goucher, now is your chance!
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Distance: 23.5 km from ErieFri, Aug 07, 2026 at 6:00 PMSee full details
Founded in 1979, the Eldorado Run for the Cure is the longest operating charitable footrace in the State of Colorado. All proceeds from the annual four-mile run benefit the Colorado Cancer Foundation's life saving work, from funding oncology research at the University of Colorado's (CU) Division of Medical Oncology to aiding patients at the CU Hospital in Aurora, CO.
Each year, the run has developed and grown, and in 2023 a new course was introduced, routing participants along the scenic South Boulder Creek, which winds through the high cliff walls of historic Eldorado Canyon.
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Distance: 18.8 km from ErieSat, Aug 08, 2026 at 8:00 AM