Event Details
​The event is a 24-hour track race with a variety of race options.  Additional options include 50-mile, 12-hour, 50K, 6-hour events, 26.2-mile, and 13.1-mile.  Time limits for the distance races are 24-hours for the 100-mile race and 16-hours for the 50-mile race.  We recommend dual registration for the 24-hour and 100 mile race if you are concerned about the 24-hour cutoff for the 100 mile race.  Participation will be limited to 100 competitors, and registrations will be filled in the order they are received.


The race is a qualifying event for the 2019 IAU 24-Hour World Championship.  The race is intentionally held on a certified track to provide participants with a flat, cushioned surface to achieve their best performance.  All efforts will be made to respect the endeavors of competitive athletes while promoting safe and fun  environment for all participants.

Laps will be recorded by electronic chip timing and will be submitted for USATF record purposes.

You may leave the track at any point in time during the race, but you must return to the same place before continuing. You may not leave and return directly by the timing equipment, to avoid double counting a lap. Your number of laps, distance, and race will be shown on an electronic display near the start.

Awards will be given in Male and Female categories for the 24-Hour, 50-mile, 12-hour, 50K, 6-hour, 26.2-mile, and 13.1-mile overall individual winners and 24-hour overall relay winners.  Belt buckles will be provided to 24-Hour and 50-mile finishers. 

​All runners will receive an event specific race shirt, and all finishers will receive a finisher medal.

Average temperatures for March in the Owasso area are 51, with an average high of 62 during the day and an average  low of 40 at night. The record high in March is 99, and the record low is -3.

Important – Weather in Oklahoma in March can be sporadic.  Be prepared with clothing to handle a wet and cold event.  In case of rain, we will have tents and indoor rest areas available for crews and spectators to keep dry during the race.

Personal Space
We will have tables and chairs for runners to share. There is ample space around the track available to set up your own tables and chairs, blankets, or tents.

Aid Station
We will have a fully stocked aid station throughout the event with water, electrolyte drinks, and food. Volunteers can prepare food upon request and assist runners in every reasonable way.

Race Course
The race route is a 400-meter all-weather track located at Owasso High School in Owasso, Oklahoma. The direction of travel will change every four hours, in accordance with standard practices.  Portable restrooms will be available on the course, and showers will be available nearby.

Owasso High School Track

Owasso, Oklahoma

2017 Results
The results for the 2017 Lhotse 24-Hour Endurance Challenge are now available here: 2017 Results

Congratulations to all of our finishers! We want to offer a special congratulations to Carolyn Caskie, who qualified for the Canadian 24-Hour Team.  


Lhotse Endurance Athletes Network (L.E.A.N.) presents the 2nd annual

Lhotse 24-Hour Endurance Challenge

For questions or additional information, contact:

Wyatt Hockmeyer

Email: whockmeyer@lhotsemanagement.com

​Phone: (918) 640-4880

March 17-18, 2018

8:00 am CST

Online registration begins at 12:00 am CST on September16, 2017 and ends at 8:00 am CST on March 17, 2018

Individual 24-Hour: $200

Individual 50 Mile: $150

Individual 12-Hour: $150

Individual 50K: $100

Individual 6-Hour: $100

Individual 26.2 Mile: $100

​Individual 13.1 Mile: $75

Registration fees include participation in the event, one custom event shirt per participant, and entry to the pre-race dinner on Friday, March 16.

The pre-race dinner will be held at the Owasso Track and Field House located at the race venue.  Dinner will begin promptly at 6pm on Friday, March 16.  We look forward to meeting you!​

Register for your respective event here: RACE REGISTRATION

*Runners interested in logging a 24-hour and a 100 or 50 mile time have the option for a dual registration for an additional $50