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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!
Attention... an updated or future version of this listing may exist. Click for more info: Chicago Lakefront Ultras 50K and Half Marathon - George Cheung Memorial Race
Race Information
Race Name:Chicago Lakefront Ultras 50k and Half Marathon - George Cheung Memorial Race
Date:Saturday March 25th, 2023 - 8:30 am
State:Illinois, United States  Go there or Go there in new browser
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[logo: Chicago Lakefront Ultras]For year 2023 we're expanding Chicago Lakefront Ultras event distance choices to encourage greater participation in our spring version of Chicago Lakefront Ultras. You may choose to race our traditional springtime `50 Kilometer Ultramarathon` in its 23rd year, or race our newly minted `13.1 Mile Half Marathon`, or come out for our fully supported `20.7 Mile Buildup` run.

Race Location (NOTE: NEW LOCATION FOR 2023)
The race start/finish area is at: Jackson Park, 63rd Street Beach House
Address: 6300E E Hayes Drive, Chicago, IL 60649 or approximately 6300 S Jean Baptiste Point DuSable Lake Shore Dr.
GPS: 41.7810851, -87.5735233
This is on the EAST side of Lake Shore Drive, south of the Science and Industry Museum.

The Courses (New this year due to construction at E Hayes Dr)
The 50K course will be slightly modified from the traditional course with that Start/Finish area on the East side of Lake Shore Drive. The course is a 10.3 mile out-and-back "loop". 50K runners will run this loop 3 times. The course will be a USATF certified course.

50K Course (Race Start Time 8:30am): Course consists of three, 10.3 mile, out-and-back "loops" on the Lakefront Trail
• the North "turnaround" is located about 1/4 mile north of the 31st Street Beach on the Lakefront Trail Path
• the South "turnaround" is located at the 63rd Street Beach House
• 50K Course Map (approximate) -
NOTE: If you are attempting to set a USATF open or age group record, you must notify the Race Directors as soon as possible to ensure all requirements are met prior to the race.

Build-Up Training Run Course (Start Time 9:00am)
• Follow the same course as the 50K race, but only do 2 loops (20.7 miles total) - NOTE: You may also run longer or shorter if you have a different target distance, but your chip time splits will be listed for full loops.

1/2 Marathon Course (Race Start Time 9:00am)
• Follow same course as 50K route but with one "Short" loop and one "Long" loop
• Short loop - first loop goes out around Promontory Point (1.4 miles out) and returns to 63rd Street Beach House (2.7 mile loop)
• Long loop - second loop follows the full 50K course with the North "turnaround" located about 1/4 mile north of the 31st Street Beach on the Lakefront Trail Path and returns to finish at 63rd Street Beach House
• Course route - refer to the course map above for the 50K course

Coronavirus considerations
The race will follow all safety precautions required by the Chicago Park District at the time of the race. Details will be emailed to participants.

Spectators and Crew Support
In order to be consistent with USATF Rules and Regulations, crew support providing food and hydration is only allowed at the designated aid stations. Crews and spectators on bikes should be extremely careful of pedestrians, runners, and other bikers as the lakefront path will be open to the general public during the race. There is a Divy bike station with about 18 bikes located south of the parking lot at Jackson Park on the West side of Lake Shore Drive.

Aid Stations
Two aid stations, you will have access to an aid station at least every 3.6 mile, passing the Burnham Park aid station both outbound and inbound.
• Burnham Park - Oakwood Blvd/39th St, west side of pedestrian path (3.6 miles from 63rd Street Beach House and 3.0 miles round trip to/from the North turnaround point).
• There is also an aid station and drop bag at the start/finish area, at the 63rd Street Beach House south turnaround spot (3.6 miles from Burnham Park aid station). Note that the 1/2 Marathon runners will first run a short loop and be back at this aid station after the first 2.7 mile short loop.

Aid stations will have water, Tailwind, Coke, Mountain Dew, Ginger Ale. For food we will have assorted cookies, chips, pretzels, M&M’s, nuts, and some other goodies. Volunteers will be at the aid stations to handle the drink and food items.

WE ARE GOING CUPLESS!!! You will be provided with one, reusable, foldable silicon cup for water, Tailwind, and soda. We also strongly encourage you to bring your own hand held water bottle, hydration bottles and vest, Camelback, etc.

You will have access to your drop bag at the end of each 10.3 mile loop at 63rd Street Beach House, so if you are not comfortable with using the aid station supplies, please bring your own supplies and/or have your crew help support you. Note that the aid stations do not have energy gels, so plan accordingly.

We will have portable restrooms located at 63rd Street Beach House start/finish areas and at the Burnham Park aid station. Restroom facilities/buildings maintained by the Chicago Park District may or may not be open on race day.

Drop Bag Area
There will be a designated drop bag area near the start/finish area at 63rd Street Beach House, thus giving you access to your drop bag every 10.3 miles. The drop bag area will be tarps, and they will be open to the elements. Please do not crowd the space and do not touch/move other people’s stuff.

I have always found that using a small cooler works great as a drop bag. That gives you something protected from the elements, and if it is a hard-sided cooler, it gives you a place to sit, if needed.

Packet Pickup / Runner Check-In
All participants must check in on race morning prior to the start of their event. Packet pickup will take place near the race start/finish area at 63rd Street Beach House (southeast portion of parking lot). Packet pickup will begin at 7:30am and conclude prior to the start of the race.

At packet pickup, you will sign a race waiver and receive your timing chip ankle bracelet, bib number, pins, race shirt. Your race number needs to be visible at all times on the front of your body.

Everyone will receive a race shirt in their packet. All 50K and 1/2 Marathon finishers (including early starters) will receive a finisher's medal. First place overall male and female will earn a very special recognition award.

Early Starters
If you would like to start early, please contact me at to let me know. We must keep track of who is starting early. Early starters will not qualify for overall or age group awards.

There is plenty of parking at the 63rd Street Beach House location, or else there is overflow parking on the west side of Lake Shore Drive north of E Hayes Dr immediately south of Grove 19A and 19B. There is no longer any free parking along the street on Hayes Drive. Parking in the parking lots is paid parking using the Park Chicago app or the meter stations.
Weather forecast: National Weather Service

Congratulations to standout veterans of Chicago Lakefront Ultras for their performances at our October 30, 2021 race...
[Oct 30, 2021: Roy Rubinstein]
[Oct 30, 2021: Roy Rubinstein's New American Record]Roy Rubinstein sets a new USA Track and Field Age Group Record for 50 Kilometers, of 8 hours, 3 minutes, 18 seconds! Check out Roy's coverage in the Daily Hearld, by Burt Constable.
[Oct 30, 2021: Roy Rubinstein]Bernd Heinrich returns to Chicago's lakefront forty years after setting an American masters record of 6:38:21 for 100 Kilometers. His record still stands, Bernd still races, and the ultra-accolades keep coming! Check out Bernd's coverage in Outside Magazine's Lessons from a Lifetime of Running, and Running’s Most Interesting Recluse.
Posted:December 7th, 2022 6:53 pm
Last Update:December 20th, 2022 10:20 am
Event InformationFor multiple Member Events:
Name of EventDistanceMeasurementDateStart TimeRelay MembersTeam Members
    Chicago Lakefront 50k50.00KilometersMar 25th, 20238:30 am
    Chicago Lakefront 1/2 Marathon13.10MilesMar 25th, 20239:00 am
    Chicago Lakefront Buildup Run20.71MilesMar 25th, 20239:00 am
   Chicago Lakefront Ultras Volunteer9.00HoursMar 25th, 20237:00 am
Director Information
button: Email RDs
Name of Race DirectorEmail AddressPhone Number
Jeffrey FleitzChicagoLakefrontRD@gmail.com219-359-6755
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