January 6 - July 28, 2024


Crystal Lake, IL Series

Registration Closed Fri. Jan 5, 2024 @ 11:59 PM


Are You Tough Enough?

The 50K MASHUP is a SLAM/SERIES of 50K trail races (because, hey, 50K is an underappreciated distance in ultrarunning). These races are run throughout the Midwest, and there’s a BUCKLE at the end for everyone who successfully completes each of the FIVE series races in the same calendar year.

Each calendar year the series kicks off in January with Frozen Gnome 50K and ends in November with Miner 49er 50K.

Awards will be given out to the top three 50K MASHUP finishers based on their fastest cumulative finish times. All finisher buckles and awards will be presented at the final event in the series, the G.O.A.T.z 50K or Miner 49er 50K Trail Race



***First 25 participants to register for the 50K Mashup Trail Race Series by Nov 30, 2023, will have a GUARANTEED SPOT in the Clinton Lake 50K for 2024!***
Once that number is reached the rest of the series registrants will need to register through the regular process on opening day for Clinton Lake 50K.

***Ice Age 50K - Entry is NOT GUARANTEED into Ice Age 50K. All runners that sign up for the 50K MASHUP by November 30, 2023, will have an opportunity to pre-register for the IA50K through the PRE-REGISTRATION process otherwise, runners will need to register for IA50K when the online registration opens to public early December 2023. IA50K sells out within minutes of online registration opening! ***

- Once registered for the 50K MASHUP you will receive a "Special Pricing Code" via email that you can apply to your race registrations when you sign up for each of the five races in the series.

- You must be registered for the 50K MASHUP by Friday, January 5, 2024 and the first race in the series Frozen Gnome 50K.

- Please be aware that the "Special Pricing Code" is exclusively for the use of the 50K MASHUP participants, misuse of this code will result is disqualification from the series.

- That accomplished, you are in the series! But you have a few things left to do: You are responsible for your own registration and fees for each race.

- Note: Some races have field limits, so best not to procrastinate.



Frozen Gnome 50K - January
Clinton Lake 50K - March
Ozark Foothills 50K - April
Ice Age 50K - May
Dark 2 Dawn - 9 Hours - June
Rockin Rockwoods 53K - September
G.O.A.T.z 50K - October
Miner 49'er 50K - November

**Check individual race websites/registration pages to confirm race dates and when online registration will open for each event**

Event's current local time: 3:48 AM CT


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