Key takeaways
- A cutoff is a time limit by which you must reach a race checkpoint, or you're pulled from the race.
- Cutoffs exist for runner safety, logistics, and keeping the event on schedule.
- There are intermediate cutoffs along the course plus an overall finish cutoff.
- Runners must hold a minimum pace; managing cutoffs (and aid-station time) is a key strategy.
What a cutoff is
A cutoff is a time limit in a race by which a runner must reach a particular checkpoint, aid station, or the finish — or else they are pulled from the race (a ‘time-out’ DNF). Cutoffs are common in ultramarathons, with intermediate cutoffs at points along the course plus an overall finish cutoff.
Why races have cutoffs
- Safety — runners aren’t left out on a remote course longer than support and conditions allow.
- Logistics — aid stations, volunteers, and road closures can’t run indefinitely.
- Scheduling — keeping the event on time.
Cutoffs effectively set a minimum required pace.
Deep into a 100-miler, a back-of-pack runner arrives at an aid station with just 15 minutes of buffer before its cutoff. Rather than linger, they refuel fast and push on — managing the relentless cutoff clock that would end their race if they fell behind.
How runners manage cutoffs
Know the cutoffs in advance and pace to stay ahead of them, build a time buffer where you can, and be efficient at aid stations (avoiding the ‘aid station vortex’ of lingering). For runners near the back, cutoff management — balancing rest and refueling against the ticking clock — is a central ultrarunning strategy, where a crew can help speed stops.
The bottom line
A cutoff is a race time limit — reach the checkpoint by the cutoff or you're pulled (a DNF). Existing for safety, logistics, and scheduling, cutoffs set a minimum required pace via intermediate and finish-line limits. For many ultrarunners, especially nearer the back, managing cutoffs — pacing to stay ahead and not lingering at aid stations — is a central strategic challenge.
Frequently asked questions
What is a cutoff in a race?
A cutoff is a time limit by which a runner must reach a specific checkpoint, aid station, or the finish in a race. If you arrive after the cutoff time, you're pulled from the race (recorded as a DNF — did not finish). Cutoffs are common in ultramarathons and other long events, with intermediate cutoffs along the course and an overall finish cutoff.
Why do races have cutoffs?
For several reasons: runner safety (ensuring people aren't out on a remote course longer than support and conditions allow), logistics (aid stations, volunteers, and road closures can't run indefinitely), and keeping the event on schedule. Cutoffs set a minimum required pace, ensuring the field stays within the time the organizers can safely support.
How do runners manage cutoffs?
By knowing the cutoff times in advance and pacing to stay ahead of them, building a time buffer where they can, and being efficient at aid stations (the 'aid station vortex' of lingering too long is a common way to lose time against a cutoff). For runners near the back, cutoff management becomes a central strategy — balancing rest and refueling against the relentless ticking clock.
Sources
- Ultramarathon racing — American Trail Running Association
- Endurance events — American Council on Exercise