UK 24 hour mapathons

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About

Inspired by Tshedy's April 2019 24-hour mapathon, we have created our own list of regions for the UK OpenStreetMap community. We've picked one area per month and the day is selected randomly to give as many people a chance to get involved as possible. Instead of one mapper working for 24 hours we welcome everyone to help map the specified region at time that suites them within the 24hour window.

Regions are picked to be very roughly equal in population, and include the Isle of Man and the Channel Islands alongside the UK. All are welcome - from absolute beginners to experienced mappers. There is no need to live near the region but if you are contributing from afar, please see A Note of Warning below.

Guidance

New to OpenStreetMap?

Welcome to the worlds most collaborative map! We're building a map of things that matter to people like me and you. No big organisation controlling what you see on the map, no preference to advertisers and no fees.

To get started head to openstreetmap.org and click Edit. If you don't already have an account please register. Once done you can start editing using the iD in-browser editor. There is a built in walkthrough to teach you the basics. Once complete you can start contributing to the mapathon - perhaps start with something simple like adding building outlines.

A Note of Warning

OpenStreetMap is at its best when local people help map their local areas. It easy to go out and look at something in person before adding it to the map. Our mapathons might not be close enough for you to visit in person. On the plus side this encourages us to map away from our normal places, helping to fill gaps where their might not be local mappers and allowing us to see how other places are mapped (to review consistency). On the down side it increases risk of getting something wrong as we're reliant on aerial imagery, street imagery and other open data without being able to check in person. As a rule of thumb, if in doubt about something add an OSM Note instead of editing.

The mapathon list

Locations and times of our 24 hour mapathons:

Date Region
Wed, 12 Jun 2019 Milton Keynes South (Wiki page)(map)
Tue, 09 Jul 2019 Crewe and Nantwich (Wiki page)(map)
Sun, 11 Aug 2019 Wansbeck: Ashington, Bedlington, Newbiggin-by-the-sea (Wiki page)(map)
Fri, 13 Sep 2019 Newry and Armagh (map)
Wed, 09 Oct 2019 Aberconwy (map)
Tue, 12 Nov 2019 West Aberdeenshire and Kincardine (map)
Fri, 13 Dec 2019 West Ham, London (map)
Thu, 09 Jan 2020 Bailiwick of Guernsey (map)
Mon, 10 Feb 2020 Brigg and Goole (map)
Sat, 14 Mar 2020 Mid Sussex (map)
Thu, 09 Apr 2020 Swansea East (map)
Mon, 11 May 2020 North Dorset (map)

This gives a good geographic split of regions:

The locations of the first 12 regions.