
A mapathon is a great opportunity for volunteers to digitally connect and create urgently needed data for communities around the world. Local and international decision-makers use these maps and data to respond more effectively to crises affecting these areas.
Up-to-date maps are important for the success of many humanitarian initiatives around the world in responding to disasters. Through Missing Maps, you can volunteer your time to help inform these maps, and have a real impact on the delivery of healthcare and other services in these communities.
Check out the videos below to learn more:

Organizing a MapSwipe event is a simple, yet powerful way to make an impact. Thinking about bringing people to MapSwipe together? Start with the MapSwipe Event Toolkit and MapSwipe event FAQs.
Make your mapathon a success by exploring the training materials and checklists.
Are you organizing a Missing Maps event? Register your mapathon to let others know and make your event visible to the community!
How to register:
Your event should appear in a few moments on OSMCal and on the Events Calendar on the Missing Maps Website!
We love to welcome new mappers to Missing Maps, but it is important to remember we are part of a much larger OpenStreetMap (OSM) community. The data produced in OSM, whether by us or other mappers, is used in real time. Therefore, it is important that we properly support these new mappers.
Start small: 20–25 participants is ideal for your first mapathon.
Build your training capacity before organizing larger events.
For events of 50+ participants, contact info@hotosm.org.
If you want to host a large group without extensive training, consider a MapSwipe event, which is easier to manage responsibly and great for those new to the Missing Maps project.