Spring and Fall Ultra Marathons on Chicago's Lakefront

15th Annual Chicago Lakefront 50/50

Saturday, November 1, 2014
50M: 6:30 AM
50K:  8:30 AM

Results!  2014 50k | 2014 50m


Both races start and finish on Chicago's lakefront, at Jackson Park Grove 19A, approximately 100 yards west of the 63rd Street Beach House (the previous start/finish)


50M:  6:30 AM (11-hour time limit)
50K:  8:30 AM
For early start information contact


  • Consists of 4 out-and-back segments for the 50m and three for the 50k.
  • The races follow the Lakefront running path.
  • Mostly asphalt with some concrete sections.
  • One of the flattest 50k and 50 mile courses in North America.
  • The current 50 mi. world record was set on Chicago's lakefront in 1984. 
Recognition for Individual and Course Record Performances If you are planning to set a record at this Event that you want to be recognized by USATF, you must contact us as early as possible before registering for the Event to inform us of your intentions, and to discuss the USATF's requirements for recognition of your achievement.


  • Belt buckles to 50M finishers 11 hours and under (no early starters).
  • Medals to all 50K finishers.
  • Overall male and female trophies.

Long Sleeve Tech Shirt

To every paid participant.

Aid Stations

Three; approximately every 2.5 miles. Amply stocked with water, Gatorade, cola, and a variety of food items.


By mail or online
Am I Registered? Check here.



50K 50M
  Through May 23 $45 $55
May 24 through October 29 $55 $65
  October 30 No registration
  October 31 and November 1 $65 $75
Packet Pickup Race packets and registration will be available on Friday, October 31 (noon-6pm) at:
1466 North Halsted Street
Chicago, IL 60642

Metered parking in the street. Free parking in the garage in back of the store for 90 minutes with store validation.

More Information

Chicago Ultra Marathon
20 Jonathan
Lake Zurich IL 60047
Phone: 847-648-8843

Volunteer Information

Please send an e-mail to with your contact information, and include Chicago Lakefront 50/50 in your subject line.  Thank you!
Future Race Dates 3/21/2015:  Chicago Lakefront 50k
10/31/2015:  Chicago Lakefront 50/50