Major races enforce checkpoints and cutoffs. Enter the course limit and your planned pace to see if you finish inside the limit — and how much margin you really have.
Frequently Asked Questions
Gun time or chip time?
Gun time starts at the gun; chip time starts when you cross the line. Check the race manual — cutoffs may be enforced on either.
How much buffer should I keep?
At least 10–15 minutes: aid stations, toilets, photos and cramp all cost time.
What happens if I miss a cutoff?
You are pulled from the course and your result is void. Always build margin into the early stages.
Gear runners ask about
GPS running watch
Pace, laps and alerts on your wrist
Chest strap heart-rate monitor
More reliable than wrist-based HR
Race day running shoes
Lightweight shoes for tempo and race pace
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