Daily social mapping project happening every November
The official repository for #30DayMapChallenge, a daily mapping challenge open to everyone.
Every November, participants make one map a day for 30 days — each based on a different theme — and share them on social media using the hashtag #30DayMapChallenge. You can prepare maps in advance, but the spirit of the challenge is to publish one on each themed day. There are no restrictions on the tools, data or technologies you use, and doing fewer than 30 is also fine. No sign-up needed.
🌍 30daymapchallenge.com — themes, community map collections and mapping resources, all in one place.
The 30 themes for the 2026 challenge will be announced later this year. Themes from past challenges are kept in archive/.
Explore the maps
Since 2019 the community has shared more than 50,000 maps under the hashtag. Browse the community map collections for inspiration — and add your own so others can find it too.
For deeper community-maintained stats and archives, see Haifeng Niu's #30DayMapChallenge bot and David Friggens' 2019–2020 metadata gallery.
Mapping resources
Looking for data sources, software or tutorials to get started? The Mapping resources page collects the essentials.
Contributing
The most common contribution is adding your map collection to the website — the quickest way is to edit galleries.yml and open a pull request. See CONTRIBUTING.md for this and other ways to submit.
Code of Conduct
Whether you are a GIS expert or have never made a map before, everyone is welcome to participate.
But keep in mind a few things:
- All maps you publish have to be your original work. Don't steal content from others.
- Give credit to the original data source whenever possible.
- The challenge is all about creativity, openness and the joy of beautiful maps and cartography. It is not a competition.
- Be mindful in how you use AI tooling. If you generate all of your maps with generative AI tools, where's the fun? This is not a prompt engineering challenge.
- Don't be an asshole. Don't harass or steal from others.
Inspiration for the challenge came from Inktober and Tidy Tuesday.
Merchandise
Get your official #30DayMapChallenge stickers from Redbubble.
