Maths corrections, Bushy to Bicester, teeny-tiny-t-shirts for acorns, extra credit, an anonymous email, in memory of Peter Samuelson, parkstats.net, the value of tin, listener's arbitrary milestones and things, stats, Myrtle parkrun, Lowestoft parkrun and of course #DollyorBev.

It's a SHAM, Small Michael's nut, more bingo, a new women's record by Charlotte Arter, an anonymous email, Elliott's stats, Harrogate parkrun, Fire Service College parkrun and the M96 all feature.

Arbitrary acronyms, #parkrunForever, 700 parkruns, Alex Yee's 13:57, the maths behind parkrun bingo, abridged stats, booming NYDD attendances and the 'double map', Felixstowe parkrun, Markeaton parkrun, Brierley Forest parkrun, Severn Bridge parkrun, Ashton Court parkrun and Eastville parkrun all feature!

A Merry Christmas to all! Audio recorded live in the field at Bushy's record attendance event is sandwiched by such items as #DollyorBev, the Campaign Against Celebrating Arbitrary Milestones, listener's arbitrary milestones, stats and the profile of East Brighton parkrun. Micro-interviews with PSHCBE, JoSHCBE and parkrun Global CEO Nick Pearson also contained within. It's a cracker.

Wilson Indexz and Tale Walker, Ted's Corner update, brainwashing, Sport England's multi-million pound investment into parkrun UK, Tourist Tool tweaks, your arbitrary milestones, the elder generation outparticipates the young, stats and Gloucester City parkrun.

Arbitrary Research Senior Executives, alphabetourists, no more special caps, merch, new running challenges, arbitrary milestones, Bendover Woods uber-tourist meet-up, Bradford parkrun, Bedworth parkrun and Elliott Line sings!

Bah Humbug, BA AC clarity from DD, Mark Pinney's Challenge Chaser, arbitrary milestones, time travellers, EL's stats, -42C, Happy Birthday Scotland, Cliffe Castle parkrun, Brooklands parkrun and an outtake.

Pigeon Chess, Luna the cat, Thanksgiving extra helpings, listener emails, Woof Me Now or With Meow, apricots and bananas, stats, VM100-104, Potternewton parkrun, Jersey Farm parkrun and of course an interview with Mr Dave Wilson of Wilson Index fame.

Sore throats, new offices, Rutsonbot, p-index, Rikki Prince's New Year's Day double finder, Buggy-gate, bad adjectives, dog and cat buffs, stats, Armley parkrun, Mini Mermaids and Young Tritons, Coldham's Common parkrun, results processing, fangirls and more.

Kingston-Gate, J is for..., merch poll, why a small 'p'?, global selfie distribution, Elliott's stats, reckless motorists, Walmer and Deal Seafront parkrun, Wonky Bear and "not a proper milestone" shouts.