50k Mashup Slam

Overview

The 50K MASHUP SLAM is a series of trail races held throughout the Midwest. The series focuses on the 50K distance and offers a finisher buckle to participants who complete five series races in the same calendar year. Awards are given to the top three series finishers based on their fastest cumulative finish times. All finisher buckles and awards are presented at the final event in the series, listed as either the G.O.A.T.z 50K or Miner 49'er 50K.

Series details and rules

Registration for the series is time-limited; entrants must be registered for the 50K MASHUP by January 1, 2026 and for the first race, Frozen Gnome 50K. The series registration fee is non-refundable. Series registrants receive a special pricing code by email to apply to individual race registrations; misuse of the code can lead to disqualification. Entrants remain responsible for separate registration and fees for each race, and some races have field limits.

Notable registration provisions:

• First 25 participants who register for the series by December 1, 2025 will have a guaranteed spot in the Clinton Lake 50K for 2026.
• Series registrants who sign up by December 1, 2025 have an opportunity to pre-register for the Ice Age 50K 2026.

Races included in the series: Visit the organization's website for the most recent information.

• 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)