- Edit-a-thons ranged from 2 to 48 hours, and the average edit-a-thon is five hours long.
Event length was reported for 99 (82%) of edit-a-thons included in this report. Edit-a-thon length ranged from 2 to 48 hours and averaged 5 hours.  As the graph below shows, the majority of event lengths fell into either the 3-4 hour or 5-8 hour windows (both 34%), followed by 1-2 hours (21%) and over 8 hours (12%).
Most edit-a-thons lasted between 3 and 6 hours. For this chart, event length categories were rounded to the nearest full hour. (Eg, an event that was 2.5 hours long falls in the 3-4 hour range while an event that was 2.4 hours falls in the 1-2 hour range).
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- Participation averaged 14 users per event. Sixteen percent of participants in all the editathons were new users and 25% were existing active editors, while 15% were existing users who were not active and 44% were participants whose editing frequency could not be determined.
The participant counts were obtained for 92% of edit-a-thons included in this report (111 edit-a-thons). Number of participants ranged from 1 to 300 and averaged 14. In these edit-a-thons, there were 354 new users (16% of participants) and 913 existing users (40% of participants). Twenty-five percent of users were existing active users (573 participants). However, for 44% of participants for whom user names were not reported, we cannot determine if they are new, existing, or existing active users. Thus, we must use caution when interpreting statistics drawn from participant counts such as retention or productivity, since these could vary widely based when considering a more complete set of users.
EDT Participation 2015 Report
On editors and content
“...we held a series of editathons with Medical Research Council and the Royal Society. These introduced dozens of people to editing Wikipedia, and got them thinking about the coverage of women in science as we related it back to Ada Lovelace Day."
Cost per participant
- For the 17% of events for which participant and budget data were available the average cost per participant was $0.05 USD.
Only 20 (17%) edit-a-thons had both budget and participant count data available. Cost per participant ranged from $0.00 USD to $26.32 USD and averaged $0.05 USD.