All ultramarathons on our list will count towards your ultramarathon total. The event listing is created by event organisers and we will verify events meet our criteria. If you run in an event that is not on our list, it will still qualify for the 100 Ultramarathon Club if:

• it is open to all applicants (subject to spaces)

• has been available for runners to enter for a minimum of fourteen days prior to the event

• has a minimum of 15 runners start the event even if fewer runners finish

• is a distance of at least 27.2 miles

• is an attended event and not a virtual event or training run.