Explanation of the problem

Visitors to outdoor sports events (such as marathons and cycling races) and festivals (music, theatre, dance) are particularly susceptible to heat stress. This is due to the physical exertion of the participants and the fact that many people are gathered in one often open, unprotected place. Attendees and festival organisers must be prepared for this. Heat during events also puts additional pressure on emergency services, such as the Red Cross.

Information and maps for better understanding

Basic maps according to the standardized stress test

  • Detailed heat map of the perceived temperature on a hot day Climate Impact Atlas) → to determine where in the event area the likelihood of heat stress is highest and to identify areas where no cooling can be found.

Additional maps

  • Map showing the number of summer or tropical days now and in the future (Climate Impact Atlas) → provides insight into the increase in the number of days with an elevated risk of heat stress during events.
  • Overview and locations of festivals and events in the summer half-year → to determine which events are at risk of heat stress.

Some measures and guidelines

Organizers can:

  • Inform participants in advance about risks and measures.
  • Install extra water points and distribute water bottles.
  • Distribute hats, caps, fans, and sunscreen.
  • Enlist additional first aid personnel (trained to recognize conditions caused by heat).
  • Create shade (permanently with greenery or temporarily with cloths or umbrellas).
  • Introduce breaks (at dance events).
  • Modify the event (shorten, relocate, adjust the program).
  • Cancel the event.
  • See also information from the Dutch National Institute for Public Health and the Environment (RIVM))

Visitors can:

  • Reduce alcohol consumption and drink enough water or sports drinks.
  • Protect themselves from sunburn.
  • Wear lightweight clothing.
  • Adjust performance levels.

See also tips from the Public Health Service Environment (GGD Leefomgeving)(in Dutch).