Salt Flats Endurance Runs

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Salt Flats Endurance Runs 100 Mile, 50 Mile, and 50K Ultra Marathons held on the Bonneville Salt Flats and adjacent Mountains, We've seen extremes of 71 and 28.

The course starts at the Bonneville Speedway (where land-speed records are set during SpeedWeek and World of Speed) and runs on Floating Island, Crater Island, Silver Island, and even swings through Nevada before finishing back at the start. Average temps for this time of year are 55 degrees F, with an average high of 66 and average low of 44. This time of year 70% of the days are sunshine, and when storms do move in, they are fast and are generally gone in a matter of hours.

04/05/2025

Unofficial finish times for all ULTRA distances can be found on the tracking site. Official finish times will be logged on Ultrasignup over the next 72hrs & we will announce here when each distance is posted. *We have to finish clearing course & get all the equipment back to the SLC area before we post official results.

Wendover Will is excited to see you all this weekend! Remember packet pickup & pre-race meeting is TOMORROW night. Also ...
01/05/2025

Wendover Will is excited to see you all this weekend! Remember packet pickup & pre-race meeting is TOMORROW night. Also we have an ANNOUNCEMENT: When you see us at the starting line the salt may appear dry but after much debate & due to significant safety concerns starting after Mile 10 we have decided to use the alternate course. This changes nearly nothing other than Aid 1 & 2. We will be salt adjacent. More details will be shared tomorrow but you can also find all the info you need on our website.

Bib numbers for all ultra distances are assigned & can be found on Ultrasignup. Tracking will be live May 2nd at trackmy...
26/04/2025

Bib numbers for all ultra distances are assigned & can be found on Ultrasignup. Tracking will be live May 2nd at trackmyracer.live/SFER25

Lots of changes coming to the 2026 race! To be announced as soon as possible after the 2025 race is completed.          ...
26/04/2025

Lots of changes coming to the 2026 race! To be announced as soon as possible after the 2025 race is completed.

Start/Finish Location!
18/04/2025

Start/Finish Location!

Find local businesses, view maps and get driving directions in Google Maps.

A little appreciation for all the underpaid & overworked high school coaches out there. Also a discount to encourage you...
08/04/2025

A little appreciation for all the underpaid & overworked high school coaches out there. Also a discount to encourage your athletes to crosstrain too. -Coach Sarah

Check out Salt Flats Endurance Runs’s post.

Please respond to help us gauge interest.
30/03/2025

Please respond to help us gauge interest.

Escape the ordinary & accomplish something extraordinary! Come run one of the most amazing courses not only in Utah but ...
28/03/2025

Escape the ordinary & accomplish something extraordinary! Come run one of the most amazing courses not only in Utah but also in Nevada. Run across the Bonneville Salt Flats directly on the International Speedway as well as the surrounding Silver Island Mountain Range. Register today on Ultrasignup!

Pictured is a section of course headed up from AS5 to AS6. Tacos at AS6 & then the trail headed down into the mud flats & back to AS7 & also headed along the backside of the course.

Pictured are multiple military aircraft flying adjacent to the course. We typically see them every race with clear/good ...
27/03/2025

Pictured are multiple military aircraft flying adjacent to the course. We typically see them every race with clear/good weather.

Wendover isn’t just smokers in casinos!

Looking for something to do before the race? Or something for family to do waiting for you to run faster? Visit Historic Wendover Airfield. It is open M-F 10a-4p & Saturday 9a-5p. There is an admission fee but it supports keeping it open & well maintained.

Did you know that Historic Wendover Airfield is the most original remaining and authentically preserved WWII Army Air Base? Perhaps the most significant role of the base was as the test and training site for the atomic bomb and the 509th Composite Group under the command of Colonel Paul W Tibbets Jr. It was in fact Colonel Tibbets, flying his B-29, “Enola Gay” who dropped the atomic bomb on Hiroshima in August 1945!

22/01/2025

With such a meek winter in Utah we are keeping our fingers crossed for an “official course” year on the salt. This makes for a slightly faster course with all the crazy views & mirages you’ve never imagined.

We do not have an official photographer on course but once Matt wasn’t running the 50k he caught a few amazing shots. He...
15/05/2024

We do not have an official photographer on course but once Matt wasn’t running the 50k he caught a few amazing shots. He wants to remind everyone do not click buy. Just click download. Enjoy!

This gallery hosted by SmugMug; your photos look better here.

Aurora Borealis/Northern Lights as seen from race HQ (Grantsville UT) this last week. I’m glad I went outside to look bu...
14/05/2024

Aurora Borealis/Northern Lights as seen from race HQ (Grantsville UT) this last week. I’m glad I went outside to look but was also very tempted to drive out towards the course in the middle of the night to see what I could see from there. Next time. Still on my bucket list but this was quite amazing.

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