Effective Crowd Management for a Marathon

Between 1.1 and 1.3 million people finish a marathon each year. While crossing the finish line after running 26.2 miles is a monumental achievement that thousands accomplish each race with the help of a roaring crowd, these mass-participation events expose people to high-density crowds and unpredictable outdoor variables. As a result, organizers and spectators must coordinate security, physical barriers, and crowd management strategies. ISO 22353:2026, Security and resilience – Guidelines for crowd management lays out guidelines for implementing effective crowd management at events.

What Is ISO 22353:2026?

ISO 22353:2026 supports event organizers, event rights holders, event hosts, venue operators, and emergency services in assuring effective, successful, and safe crowd management to provide a safer environment for those attending events. The international standard provides guidelines for crowd management at events, mass gatherings, and crowded places.

Purpose of Crowd Management

In ISO 22353:2026, the objective of crowd management is to facilitate a positive event experience, while establishing a safe and secure environment for large gatherings of people. This is done by maintaining adequate space to avoid undesirable crowd movement and behaviors.

Crowd Management at a Marathon

Marathons stretch across tens of miles of open public roads, making crowd flow, environmental control, and visitor guidance uniquely challenging—but ISO 22353:2026 provides guidance for safely and efficiently management crowds at mass gatherings and large-scale public events.

High Crowd Density

At a marathon, large numbers of spectators gather at specific bottlenecks, such as the start and finish lines. Without strict crowd control, these areas are highly vulnerable to dangerous crowd crushes or surges.

At a marathon, this might mean initially managing the flow of runners into security screening, bag checks, and starting corrals; controlling pedestrian traffic while the race is live (e.g., carefully designing hydration station and medical tents in a way to avoid a domino-effect collision); and lastly making sure that once the runners cross the finish line, they continuously move forward to receive medals and foils blankets to help disperse the crowd.

Environmental and Weather Risks

ISO 22353:2026 mentions the importance of considering possible weather scenarios. Since marathons are entirely at the mercy of the elements—sudden extreme heat, humidity, or severe storms—it is essential for event organizers to plan accordingly. This may mean having real-time monitoring and evacuation protocols to prevent widespread hypothermia or heat exhaustion.

Visitor Movement

For a mass-participation marathon, which is a highly dynamic, open, and transient environment, crowd management of not only the runners but also the spectators is highly important. ISO 22353:2026 covers free movement and visitor guidance.

In a marathon, for example, making sure visitors are informed about local transit options is important to help direct the flow of spectator traffic. This could mean event organizers provide high-contrast mapping of the race and exit routes, apply signage of different viewing zones, and ensure access to race tracking apps and real-time transit alerts.