There are two Parkrun mini-series, the first ran from the beginning of May until the end of August [SUMMER SERIES] and the second running from the beginning of November until the end of February [WINTER SERIES].
In the WINTER series [21 parkruns, including Christmas Day and New Year's Day Double], you must complete a minimum of 10 parkruns to qualify. Your average points over all races will be used to calculate overall score.
Full GP Rules- Winter Rules
Latest GP Standings - Week 15
Here is the link to the latest Club records as a number have been updated recently