Crash on a Group Ride: The Ride Leader's First 10 Minutes

When there's a crash on a group ride, the leader stops the group and protects the scene, then gets the rider checked and 112 called (999 in the UK) at the same time, the moment it looks serious. Each job goes to a named person. The paperwork can wait an hour; this order can't.

Sunday, km 38, twelve riders two abreast at 32 km/h. Wheels touch and a rider is lying in the lane. A car is coming. Nobody is watching the road.

Protect, assess, alert: the first ten minutes at a glance

Screenshot or print this table for your saddle bag.

The reference for UK clubs is Cycling UK's 13-step emergency procedure for crashes on group rides, read on 20 October 2026: by our sort, eight of its steps belong in the first ten minutes and five come after; the rest of the leader's routine is in how to be a good ride leader.

Minutes 0–1: stop everyone and protect the scene

The first danger after a crash is the second crash.

1. Call it loud. "Stop! Rider down!" Use the stopping call from your group ride calls and hand signals.
2. Riders behind the crash stop on the verge where they are; one of them becomes the rear sentry. Riders ahead roll on 20 or 30 metres and lift their bikes off the road.
3. Send two sentries, one back towards traffic from behind, one forward towards oncoming traffic. They stand on the verge, not in the lane, and signal drivers to slow. Our advice: lights switched to flashing.

Where the sentries stand

Cycling UK's step 3 asks for "two (or more) people to stop any traffic". Forty Plus CC says to "send sentries 100 metres both forwards and to the rear".

Method: the Highway Code's typical stopping distances give 6 m thinking plus 6 m braking at 20 mph: a 0.67-second reaction and 6.7 m/s² braking, applied to km/h on 20 October 2026. The diagram gives no wet figure. Doubling comes from rule 227: in the wet, stopping distances are “at least double”.

• 100 metres works on a dry road up to 100 km/h.
• In the wet, 100 metres runs out from about 80 km/h (104 m). Go back 150 m or more.

The rule to carry: at least 100 metres, further on fast or wet roads, and past any bend or crest.

Minutes 1–3: check the rider and start the call at the same time

Ask out loud: "Who's first-aid trained?" The most trained person takes the casualty; as leader you're more useful standing. The caller kneels beside them, phone ready: the call starts the moment anything on the list below shows, not once the check is done.

St John Ambulance's primary survey is DR ABCDE: Danger, Response, Airway, Breathing, Circulation, Disability and Exposure (clinically reviewed 18 September 2026). Life-threatening bleeding "must be dealt with before moving on to the airway".

• Don't move them. Cycling UK: "Only move the casualty if absolutely necessary". Our reading: necessary means traffic you can't hold (a blind bend, no sentries yet) or an airway you can't keep open. Bikes come off the road; the rider doesn't.
• Bleeding: the Highway Code's Annex 7, First aid on the road (updated 22 October 2025): "If nothing is embedded, apply firm pressure over the wound to stem the flow of blood."
• Unresponsive but breathing: St John Ambulance's spinal-injury advice: kneel behind the head, hold it still and open the airway with a jaw thrust. "Do not tilt their neck." If you "cannot maintain an open airway", use the spinal recovery position.
• Warm, nothing to eat or drink, never alone, as Annex 7 also says.

The helmet stays on unless essential. Annex 7 says "DO NOT remove a motorcyclist's helmet unless it's essential". We found no cycling-specific rule, so we apply the same caution.

Ambulance, or not?

Most riders get up and say they're fine. Our rule: they still sit down on the verge for the check. Call 112 or 999 for any of these (injury signs from St John Ambulance, pages read 20 October 2026):

• not alert or responding normally, confused, or any brief loss of responsiveness (head injury);
• neck or back pain, weak or numb limbs (spinal injury);
• heavy bleeding (severe bleeding);
• bone through the skin, or a suspected break of a long bone such as the thigh, or of the pelvis (fractures);
• Our rule: a vehicle involved and anyone hurt, or any doubt.

Any other suspected break is "less urgent", St John Ambulance says: A&E or an urgent treatment centre. Our rule: by car, never by bike. Unsure? Call.

Our rule: anyone who hit their head stops riding, called or not: the UK's concussion guidelines for grassroots sport (April 2023, updated November 2024) say "If in doubt, sit them out", and no bike riding within 24 hours of a suspected concussion.

Not breathing normally? The Resuscitation Council UK's 2025 Adult Basic Life Support guidelines (published 27 October 2025): "Start CPR immediately if they are unresponsive with abnormal breathing." The call handler gives CPR instructions and can often direct you to the nearest defibrillator (AED); send a spare rider for it, never a sentry.

The 112 / 999 call: what to say and where you are

RCUK: "If you have a mobile phone, activate the speaker function and call 999 without delay."

• EU: 112 is "available everywhere in the EU, free of charge", says the European Commission (updated 23 June 2026).
• UK: 999 or 112, the two numbers Annex 7 gives.
• France: 15 (Samu), 18 (pompiers) or 112; 114 by text for deaf riders. Calls are free and work with a SIM in the phone even if its plan has run out (Service-Public.fr, checked 25 August 2026).

What the caller says, in this order:

1. "Cycling crash, one rider injured."
2. Where you are (below), and direction of travel.
3. What happened. With a vehicle involved, ask for an ambulance and the police.
4. The casualty's state: conscious, breathing, bleeding, head knock.
5. A callback number.

Where you are. In Google Maps, touch and hold an unlabelled spot right by your blue dot: a pin drops and its coordinates appear in the search box or place card (Google Maps help on dropping a pin). On an iPhone, the Compass app shows your coordinates. In France, Spain and Italy, add the road number and nearest kilometre post. UK: Cycling UK suggests a grid reference, what3words or OS Locate.

Stay on the line until the call handler ends it. No signal? Try anyway: Wild Bikes Cycling Club's accident guide notes "you still may be able to make a 999 call" without coverage. If nothing connects, Forty Plus CC says "send someone to the nearest house to use a land line". Send two riders, not one.

Who does what: role cards for 6, 10 or 15 riders

"Somebody call an ambulance" means nobody calls. Point and name the job: "Sam, you're calling 112. Priya, back past the bend. Tom, forward to the junction."

If you're the most trained person there, hand the scene to your sweep, out loud.

If the leader is the one who crashed, the sweep takes over. Name the sweep before the start, as in the playbook for your first club group ride. Your pre-ride safety briefing says "If anyone comes down, the group stops, two people stay with them, one calls 112".

If a vehicle was involved: what to record before the scene clears

First, use the car. Annex 7 says "Switch off all engines" and "If you have a vehicle, switch on your hazard warning lights." Ask the driver to do both.

After the call, the recorder notes what won't be there later: cars move, witnesses drive off.

The list follows Cycling UK's crash advice, which adds: "Avoid admitting fault, verbally or otherwise." The full write-up waits until you're home: see the same-day incident record in ride waivers and insurance.

The driver has to stop. In Great Britain, Highway Code rule 286 says a driver in a collision causing injury must stop and give their details; if they don't, they must report it to the police "as soon as reasonably practicable, and in any case within 24 hours". Italy's Codice della Strada, article 189, requires a road user whose behaviour is linked to the crash to stop and help the injured, and drivers to give their details. Rules differ, so ask your national federation (British Cycling, FFC or FFVélo, RFEC, FCI) what it advises clubs.

If the driver leaves, don't chase: give the call handler what you saw of the plate, car and direction.

Minutes 4–10: the rest of the group

Cycling UK's step 8 is to watch the group for shock: the rider who was second wheel may be pale, shaking, or saying they're fine a bit too often.

• Every layer on before anyone feels cold.
• Check anyone else who went down.
• Bars and brakes checked before a crashed bike is ridden, as Cycling UK says.

The call to the family. If the casualty can't give you a contact, Cycling UK suggests the ICE details on their phone or the sign-in sheet. Call before anything reaches the club chat. Facts only, no guessing about injuries or fault:

"This is [your name] from the club ride. [Rider] has had a fall near [place]. They're [conscious and talking / with the paramedics], and the ambulance is taking them to [hospital]. I'll call again when I know more."

The leader doesn't go in the ambulance. Cycling UK's procedure says "Do not go with the casualty". Get the hospital and job number for the family.

If they're not in the ambulance but can't ride, one club-mate waits with them for a lift (family, a club member with a car, a taxi), and the bike goes in the car. A head knock never waits alone.

Then decide: Cycling UK suggests a hot drink and a talk; Forty Plus CC sends riders who aren't needed on to the "intended venue". If you go on, go together. Nobody rides home alone, and you call the ride off only once everyone has a way home. For unrideable bikes, see mechanicals on a group ride.

What never goes on social media

Within an hour someone will want to post a photo or a Strava ride titled after the crash. It can reach the family before the hospital does.

• No photos of the casualty, and no name until the family agrees.
• No guessing about fault, no plates, no witness names.
• Footage goes to the police or insurer, not a group chat.

Wild Bikes' guide says no "accident or personal details" go on social media "without the written approval from the committee". After a fatal road crash in North Yorkshire, police asked anyone with footage not to share it "with anyone else other than the police", reported by The Stray Ferret on 15 September 2023.

Post this, and nothing more:

There's been an incident on today's ride. The rider is being looked after and the rest of the group is safe and heading back together. Please don't post or share anything about it. The ride leader will update the committee.

FAQ

Should you call an ambulance if the rider says they're fine?

Yes if they're not alert or responding normally, confused, or were knocked out, even briefly; neck or back pain or weak limbs; heavy bleeding; an open, long-bone or pelvis fracture; if a vehicle hit anyone; or if in doubt. Injury signs: St John Ambulance. Either way they sit down for the check.

How far back should you stand to stop traffic after a crash?

At least 100 metres, further on fast or wet roads, and past any bend or crest. By our calculation from the Highway Code, a car at 90 km/h needs about 64 m to stop on a dry road.

Should you move an injured cyclist after a crash?

Only if it's absolutely necessary, Cycling UK's group-ride rule. Our reading: necessary means traffic you can't hold, such as a blind bend before the sentries are in place, or an airway you can't keep open. Otherwise the sentries hold the lane, bikes come off the road, and the rider stays put.

Should you take a crashed cyclist's helmet off?

Not unless it's essential. The Highway Code's first-aid annex says not to remove a motorcyclist's helmet unless it's essential, and we apply the same caution.

Should the ride leader go to hospital with the injured rider?

No. Cycling UK's procedure says not to go with the casualty. The group still needs its leader.

How we made this. Written by club ride leaders, with AI help for drafting and translation. Every source is linked where it is used, with the date we read it. Stopping distances: our calculation, within 2 m of the Highway Code diagram. Not first-aid training: take a course.