Mr Langlois, 32, adopted Yak from the streets of Shanghai several years ago and brought him back to Guernsey last summer, but the rags-to-riches story does not end there, because now the unstoppable duo are on the adventure of a lifetime.
The pair are no strangers to challenge because last summer they ran seven laps around the island in seven days, but this time they have upped the stakes onto the world stage.
In the last six months, they have ridden and run through 12 European countries and covered 7,000km.
Mr Langlois is on a Marin hybrid bike and Yak generally runs alongside, but he sits out the busy roads and downhill sections in his Trixie dog trailer.
En route through the south of France, Mr Langlois was happy to have his best friend at his side.
‘My dog got the idea to run around the world and who am I to stop him? We’re doing every country in Europe to warm up, and then Africa and the Americas.
‘He has always loved running and has excellent top speed and stamina, I’ve clocked him at 34kph at full tilt and during his longest day he ran over 65km.
‘Yak absolutely loves to being out in the hills and he has brought a smile to countless people we have met on the road, hence the drive to keep on touring.
‘In the few seconds pedestrians or drivers have seeing Yak running alongside me with his tongue lolling around, clearly loving life, people tend to move from confusion to joy pretty rapidly.’
Accommodation costs are being kept low, with what Mr Langlois calls a ‘back to basics experience’, which means staying with friends or with hosts from websites like Couchsurfing and Warm Showers.
Sometimes locals on the streets have invited them in for the night, and they also have a tent dubbed ‘Yak’s palace of dreams’.
Food-wise the diet is described as ‘cheap and cheerful’, with around 4kg of dog kibble always in a pannier.
So far Mr Langlois has only needed seven stitches after some Christmas Day shenanigans saw him land on a rusty park bin, and he described the joy of the open road.
‘The 100% freedom that cycle touring brings, in choosing your route, where and when to stop, where to pitch up.
‘I really enjoy finding beautiful places to wild camp so I can open my tent in the epic view.
‘I find the pace at which you travel through countries on a bike perfect to appreciate the nature and to meet locals.’
Mr Langlois is keen to find a local business that is interested in supporting the adventure to keep the pair in food, in return for social media and brand promotion.
. For more information check out the Instagram handle yak.on.tour or go to the website https://yakontour.travelmap.net
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