Fat Ox 2025

Event Overview

The coolest of the fixed time series returns with a new venue at Estrella Mountain Regional Park for a 48-hour run fest! Participants can enjoy a unique running experience as they run around a scenic loop in beautiful Arizona.

Location

The start/finish line will be located near Ramadas 8 & 9 on the East side of the Turf area at Estrella Mountain Regional Park. The aid station and timing tent will be easily accessible throughout the race.

Race Schedule

• 48 hrs: Fri 8:00 AM
• 24 hrs: Fri 8:00 AM
• 12 hrs: Fri 8:00 AM
• 6 hrs: Fri 8:00 AM
• USATF 24HR: Fri 8:00 AM
• 100 Mile: Fri 9:00 AM
• Mount to Coast 100K: Fri 9:00 AM
• 50 Miler: Fri 9:00 AM
• 50K: Fri 9:30 AM

Registration Information

Registration is available until November 17, 2025. Prices vary based on the distance:

• 100 Mile - $258.41 ($281.59 after Jan 31)
• Mount to Coast 100K - $177.30 ($200.48 after Jan 31)
• 50 Miler - $154.13 ($171.51 after Jan 31)
• 50K - $136.75 ($148.34 after Jan 31)
• 48 hrs - $304.76 ($339.52 after Jan 31)
• 24 hrs - $223.65 ($258.41 after Jan 31)
• 12 hrs - $165.72 ($183.10 after Jan 31)
• 6 hrs - $119.37 ($136.75 after Jan 31)