Do bib numbers correspond to corrals?

In many large races, bib numbers are assigned sequentially by corral. Lower numbers go to faster corrals. However, some events assign bibs alphabetically or by registration date, so check your race guide.

What do elite bib numbers look like?

Elite runners typically receive low bib numbers (1-100 or special letter codes). In major UK events, elite athletes may have names printed on their bibs instead of numbers.

Can I swap bib numbers with another runner?

No. Bib number transfers are usually prohibited for safety and insurance reasons. Your bib is linked to your personal details, emergency contact information and medical data.

Why do some runners have different coloured bibs?

Colour coding helps marshals and organisers identify runners in different corrals or categories (e.g. charity runners, wheelchair athletes, relay teams). It also helps enforce corral placement at the start.

RunCalcs

Bib Number Calculator — Race Bib Range Estimator

Estimate your race bib number range based on corral placement.

Total Runners

Total Corrals

Your Corral

Bib Start Number

Elite Numbers Reserved

How We Calculate This

Bib Number Estimation

The calculator distributes bib numbers evenly across corrals after reserving elite numbers:

Runners per Corral = (Total Runners - Elite Reserved) / Total Corrals

Bib Range Start = Elite Reserved + Start Number + (Your Corral - 1) x Runners per Corral

This gives an approximate range. Actual bib assignments vary by event and organisers may use different allocation methods.

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always consult a coach or medical professional for personalised training advice.