I have also made a few other versions to expand the game (not all completely inclusive, but you could modify them to suit your own needs), which are 'finishing positions', 'event numbers', 'days of the week', and 'all dates of the year'. (See my Google sheets chart at the bottom of this page).
The parkrun alphabet is similar to parkrun bingo, so I have added my progress in another tab (I've never actively worked on collecting specific letters, but as I've toured around I have naturally ticked off most of them without trying).
If you use Google's Chrome browser, there is now a plug-in extension which you can download. It plays with the data on your results page and automatically calculates which challenges you have completed (more than I've listed on this page). A completed challenge results in a badge being awarded - these are all shown at the top of the screen just underneath your athlete details. The green badges show running achievements including the original 'Stopwatch Bingo' plus 'Bushy pilgrimage', 'Pirates!' (7 Cs and an R) and 'Stayin' Alive' (3 Bs and 3 Gs) plus plenty of others. There are also flags which show the countries where you have registered a parkrun - see photo below...
|my results page with extension activated [april 2018]|
It also pulls out your volunteering data and gives you purple badges for each role you have performed along with stars which indicate a certain number of occasions in that role (One star for 5, two for 10, three for 25+). It's really simple and brilliant. The extension is made by Team TC Makers and officially called 'Running Challenges', so search the Google Chrome store for 'parkrun' or 'Running Challenges' and it should find the extension.