Most Competitive Ultras

What Makes a Race Competitive?

This ranking highlights ultramarathons with the deepest fields based on UltraSignup runner rankings. An "elite" runner is defined as having a rank of 90 or higher—placing them in approximately the top 10% of ultra runners. Races shown here have 10 or more elite runners in their field. The "Avg Rank" column shows the average ranking across all ranked entrants, giving insight into overall field depth. Click any column header to sort.