Thank you to everyone who participated in the UD Earth Day Mapathon 2020! 

We reached a total of 1644 edits: 1,222 buildings and 50km of road!

Celebrate Earth Day with a UD Mapathon!

Wednesday, April 22, 2020



Why Mapathon?

We are excited to continue mapping in the spirit of past mapathon events at GIS Day 2019, Earth Day 2019, GIS Day 2018 and Geoweek 2017! Mapathons are our way of getting more people involved, promoting free and open data, and garnering excitement about mapping. It is a way of ‘flexing our muscle’, that is to show we can make a difference through our network of volunteers.

What on Earth are you doing on Earth day? Share with us!

Whether you’re on Instagram, Twitter, or Facebook, include the #UDearthday20 hashtag when sharing your mapping activities


Mapping is done with OpenStreetMap, a free and online mapping tool. Projects are organized by the Humanitarian OpenStreetMap Team (HOT) using a tasking manager called the HOT Tasking Manager. In a project, the area is broken into small squares which a volunteer can choose to edit. Once the volunteer starts working on a square, the square is locked from editing by users in the tasking manager. This way, two people do not edit the same area and overwrite each other’s work.

Since OpenStreetMap (OSM) can be used to add data to maps worldwide, this Mapathon gives us the opportunity to provide help from the comfort and safety of our homes. It’s easy, fast, and a great way to contribute to humanitarian efforts this Earth Day!

In this reference guide, you will find information on how to use OSM to map roads, buildings, and agriculture properly.

Map from the convenience of home on your own time! If you need help getting started you can join us on Zoom between 2PM to 7PM on April 22. 

Earth Day 2020 Project

The project we were working on in April 2020 is #8287 – Missing Maps – Malawi- ChitipaNW ( Please read the directions carefully. See Getting Started for a guide.

Thank you to our sponsors and organizers!

This event was organized by Epsilon Eta and is being sponsored by The Geology Club, IT, Library, Museums, & Press, Students for the Environment, and the Earth, Ocean, and Environment Club.