Frank has visited several exotic locations including Walvis Bay in Namibia. For some runners, a 15 minute drive to a park, beach or trail might not be worth the hassle, but for others, distance is no object.
Japan, London, New York and Berlin are well-established as marathon destinations. But there is another ever-expanding collective of enthusiasts globetrotting in search of a more modest distance - the 5k - in several hard-to-reach places.
What is Parkrun tourism?
Parkrun is a network of free, weekly, 5km runs taking place in more than 20 countries.
It was founded in the UK in 2004 and as it expanded in its early years, runners might have skipped their home run for a week to visit another event across town.
Today, every person registered has their own barcode which is their passport to any one of 2,300 events worldwide.
There are no prizes, no medals, no frills - running in a different country simply earns you a flag icon on your Parkrun app profile.
That same app presents other challenges, a popular one being the 'alphabeteer', where runners try to attend a run starting with every letter, except X.
Runners often visit Poland or the Netherlands, where names beginning with Z are more common. Queen's Parkrun in Belfast attracts visitors in search of the elusive Q.
Groups from the UK and Ireland are already plotting how to get to Parkrun's newest events, launching soon in the British Overseas Territories of St Helena and the Cayman Islands.
'I'm not as mad as some people think I am'
Frank has visited Eswatini, Japan and Australia on his travels
Frank McLoughlin's first Parkrun was in Malahide in 2013 and he seldom ventured outside Dublin for years.
He has gone from being
