[2] It was formed in 1976 to help British riders complete the qualifying rides for entry to the Paris-Brest-Paris randonnee.

By the end of 2018, Audax UK membership had exceeded 8,000 and 2019 saw the highest number of "calendar" events (i.e. mass rides that take place on a specific day) yet.

The events are non-competitive, with riders needing only to complete the ride distance within specified time limits.

The notable calendar events include London–Edinburgh–London, held every four years;[4] the National 400; London-Wales-London (formerly the Severn Across), a 400 km ride from West London to Chepstow in Wales and back again;[5] the Bryan Chapman Memorial, a 600 km ride from Chepstow in SE Wales to Anglesey and back;[6] and the Mille Pennines, a 1000 km ride held in Northern England.

The National is a 400 km "flagship" calendar event originally organised by the CTC in 1982.

Audax UK allow members to qualify for numerous awards, as set out in the tables below.