The sweep team: what it is and how it works in a race

In trail running and marathons, the sweep team is the crew — often on foot, by bike or with a support vehicle — that follows the last runners along the course, making sure no one is left isolated beyond the safety limits set by the race and enforcing the maximum times and time barriers. The site already has a long, detailed article, the sweep protocol, written for the people who do the job and for organisers: this page complements it, for runners and spectators who simply want to know what the term means.

What is the sweep team?

It is common to both road marathons and trail races, and it is distinct from — though often confused with — the “tail runner”, the role that formally closes the race, following the last runners without necessarily taking down the course markings.

A sweeper does not escort a single runner from start to finish: the sweep team follows the back of the field, stays in contact with race management or the operations centre and steps in when a runner fails to meet the required times or is in difficulty. It is an organisational safety role, not a personal assistance service.

How it works at the Corsa della Bora

The Corsa della Bora publishes its own sweep protocol, developed “from mistakes and experience, and always evolving”, signed by the Race Director and the Sweep, Course and Marking Coordinator. The protocol opens by debunking five common misconceptions about the role:

• Tail runner and sweeper are not the same thing: in theory, the sweeper removes the course markings and any litter left along the trail; the tail runner follows the last runners without removing the markings. At the Corsa della Bora, as at many races, the two roles are often carried out by the same team.
• Sweepers don’t accompany runners, they follow them: it is not their job to motivate, entertain or give directions — only a mountain guide can do that in a mountain setting.
• Sweeping is not a way to run the race for free: it carries serious responsibilities and should never cover more than 20–30 km of the course.
• A sweeper can’t be a slow runner: they must be able to move faster than the back of the field, to reach the next checkpoint in the event of a withdrawal or to step in during an emergency.
• Sweeping doesn’t mean “making it to the end” at all costs: poor time management by the sweepers affects the whole operation further down the line (volunteers, rescue, timing).

Among the binding rules for those on sweep duty, the S1 operating protocol requires: teams of 2–3 people with a single person in charge of communications; announcing themselves at every checkpoint with the words “we’re the last, the race is over”; liaising with the checkpoint manager (bib numbers of runners who have withdrawn, waiting for the OK to carry on); carrying the mandatory kit plus a first-aid kit with an extra thermal blanket; keeping the sweeper bib clearly visible at all times; no conversation, encouragement or food for the runners they follow at a distance.

What happens if the sweepers catch you: time barriers, withdrawal, pick-up

The Time barriers are deadlines for leaving a checkpoint, not points where the sweepers “physically catch you” in the strict sense: the Official Regulations (art. 17 “Maximum time and time barriers”) state that, to stay in the race, you must leave the checkpoint before the time limit, regardless of when you arrived. Anyone who withdraws, is stopped or misses the time barrier cannot continue: their bib is cut and the organisation takes them to the main area (Bora Village).

A runner may withdraw (art. 18 “Withdrawals and transport to the Bora Village”) only at a checkpoint, except in the case of injury on the course. The runner must tell the checkpoint manager, or notify the organisers by WhatsApp, that they are withdrawing, and must keep their bib, which entitles them to meals and access to first-aid posts. The return journey is by shuttle bus from some checkpoints (marked with the “bus” symbol on the race maps); from checkpoints not served by a shuttle, runners make their own way to the nearest return point. From there, the organisers will take them back to PortoPiccolo.

What the sweepers actually do when they reach a runner in difficulty:

• Extremely slow runner determined to carry on (expected to reach the time barrier more than 45 minutes late): the sweepers follow at a distance, without interacting, until they reach a point where the runner can be withdrawn.
• Runner who has been stopped but refuses to accept it and wants to carry on: the sweepers carry out the withdrawal procedure by phone and physically remove the bib.
• Injured or unwell runner who intends to withdraw: if the expected delay is more than 45 minutes, the two sweepers can split up, leaving the faster one with the runner in difficulty, and regroup as soon as possible.

A separate concept, not to be confused with this one: another article on the site, “Why are there entry time barriers and how do they work?”, explains the entry time barriers, which apply to anyone who starts before the official time and hold them back until a certain time, so that the runners who started at the standard time can catch up — a measure of fairness, not of elimination. The “exit” time barriers mentioned above, the ones that eliminate runners who are too slow, are instead always based on the time of day, which is the same for everyone.

Frequently asked questions

What happens if I miss the time barrier?

Your bib is cut and the organisers take you to the Bora Village: you cannot continue on the course beyond that point (Regulations, art. 17).

Can I withdraw at any point on the course?

No, only at a checkpoint, unless you are injured. You must tell the checkpoint manager or notify the organisers by WhatsApp, and keep your bib, which entitles you to meals and access to first-aid posts (Regulations, art. 18).

Will the sweepers accompany me if I’m in difficulty?

No: the sweepers follow at a distance and do not engage with you, cheer you on, give directions or offer food as comfort. If there is a genuine safety issue, they step in with the necessary assistance and carry out the withdrawal.

Can the sweepers give me advice on how to carry on?

No: the protocol explicitly forbids it, even for experienced sweepers. Only a mountain guide can do that in a mountain setting.

What happens if I refuse to stop at the time barrier or for the sweepers?

Race management carries out the withdrawal procedure anyway and your bib is physically removed.

Is sweeping a way to “run the race for free”?

No: it carries real safety responsibilities, requires experience and never covers the whole course (as a rule of thumb, no more than 20–30 km).

For the full protocol, written for those who do the job or are interested in volunteering: Plenty of people want to sweep at races, but sweeping well isn’t for everyone! For the binding details of time barriers and withdrawals: Official Regulations.