For questions or additional information, contact:

Wyatt Hockmeyer


​Phone: (918) 640-4880

Lhotse 24-Hour Endurance Challenge

Online registration begins at 8:00 am CST on June 1, 2016 and ends at 11:59 pm CST on February 18, 2017

Individual 24-Hour: $200

Individual 100 Mile: $200

Individual Dual 24-Hour/100 Mile: $250*

Individual Dual 24-Hour/50 Mile: $200*

Individual 50 Mile: $150

Individual 12-Hour: $150

Individual 6-Hour: $100

2 Person ​24-Hour Relay: $275

​4 Person 24-Hour Relay: $350

Registration fees include participation in the event, one custom event shirt per participant, and entry to the pre-race dinner on Friday, March 17.

The pre-race dinner was provided by our Dinner Level Sponsor Med Express Urgent Care of Owasso.  Thank you for your support of our runners and the Owasso community!

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


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

March 18-19, 2017

8:00 am CST

Event Details
​The event is a 24-hour track race with 2 and 4 person relay options available.  Additional individual options include 100-mile, 50-mile, 12-hour, and 6-hour events.  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 one of the last qualifying events for the 2017 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 and IAU 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, 100-mile, 50-mile, 12-hour, and 6-hour overall individual winners and 24-hour overall relay winners.  Belt buckles will be provided to 100-mile 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.  We look forward to tracking your performance this summer in Belfast!