Seth's Fat Ass 50K

10/04/2026

Registration is open for 2026...hope you can join us on Saturday 12/12. This year we've added a new two person relay option where you can split the ten loops with a friend.

Race details and registration link at https://fatass50.com

01/02/2026

Happy Happy New Year everyone... Cleaning up the last things with the event.

Results are on the website and those who did the 50K have results on Ultrasignup as well.

We have a few lost and found items (see photo). If these are yours and you'd like them back, message us directly.

Looking forward to this year's event already!!!

12/29/2025

Thank you to our friends over at MassUltra for the writeup!!!

https://www.facebook.com/share/p/177VJB931o/

It would have been understandable if Wayne Ball turned his focus to next year the moment his name was selected in the Dec. 6 lottery for the 2026 Western States Endurance Run. After all, he waited …

12/22/2025

12/20/2025

Well....that's a wrap on another year!!!

Thank you to all the runners & especially the volunteers who hung outside all day as well.

We hope to see many of you back next year and hope you can spread the word about our amazing event.

Results have been posted on our website http://fatass50.com
Ultrasignup results are still pending - most likely be posted later in the week.

Congrats to our two winners: Eric & Emma

Quick stats: 59 pre-registered runners, 20 race day registrations. 70 finishers, 8 DNS and 1 no time requested.

FOURTY 50K finishers which I believe may be a record, still TBD

12/18/2025

All race day information has been emailed out to those pre-registered. Those looking to come join us day of, please do so as we have plenty of room.

All information can be found on our website at http://fatass50.com - check out the Athlete Guide and don't forget to print, sign and bring the USATF waiver form.

12/08/2025

Wanted...Volunteers

While we would love to have you all racing, we still would love to see you there helping us as a volunteer. Do you have time on Saturday 12/20 from 6:30am to 3pm to help for a few hours, if so GREAT. Please comment below and well reach out via messenger.

10/16/2025

Registration is open....who's in???

https://ultrasignup.com/register.aspx?eid=8220

12/22/2024

A surprise from an old running friend Jozue M. Bravo

Thanks for spending some of your time last weekend taking these great photos of the runners. Take a peek through his gallery and support his small business.

https://josuemurillo.smugmug.com/Running-/Seths-Fat-Ass-50k

12/21/2024

Great write-up on the race by our friends over at MassUltra - thank you Chris!!!

https://massultra.com/2024/12/20/runners-conquer-the-cold-close-the-year-strong-at-seths-fat-ass-50k/