Ultra-cyclist Jack Thompson breaks new long-distance record on 520km route in Japan

Australian broke long standing record on 520 kilometre long route on Japan’s route one, the first road to be built in Japan

Jack Thompson in Japan
(Image credit: @__wearekin__)

Jack Thompson, an Australian “ultra-cyclist” based in Spain, is no stranger to breaking cycling world records. The Aussie cyclist has quickly developed a reputation for pushing himself to the limit, taking on a variety of different cycling challenges that due to their extreme nature, most of us could never even comprehend attempting to pull off.

After a year in which he climbed 1,000,000 metres of elevation to raise awareness, and generate discussion around mental health - which included completing an Everest in North London - Thompson kick started 2023 by attempting the 520 kilometre Osaka to Tokyo Cannonball route in Japan.

Going into it, Thompson’s aim was to complete the gargantuan route featuring approximately 4,000 metres of elevation in less than 19 hours. After arriving in Japan’s capital city, it soon became clear that he’d broken the long-standing record for the Cannonball by 32 minutes.

Speaking to Cycling Weekly, Thompson explained that after spending numerous holidays in Japan growing up, he had long considered attempting the Cannonball record, which he described as a “rite of passage” for Japanese cyclists.

“I’d done some riding in Japan before but for enjoyment,” Thompson said. “I rode from the north to the south with my Dad a couple of years ago as well. Off the back of last year, I thought this year I’d just pick projects that I really wanted to do and go and have some fun with it. So I thought about the Japan Cannonball? Fastest known time? Let’s go and give it a stab, so we went and did it.”

As well as the gigantic distance he planned on covering, Thompson also had to contend with passing through three of Japan’s major cities at peak times, something which he explained presented a challenge in itself.

“I looked at the statistics going into this, 520 kilometres with roughly 4,000 metres of climbing,” Thompson explained. “On paper, it’s a long day but there was nothing too challenging. There weren’t any crazy climbs, so it looked pretty straightforward. What I didn’t take into account is that you’re basically passing through Japan’s three largest cities, and two of them you’re passing through at peak hours.

“So it was just the sheer numbers of people, cars, chaos and traffic lights. I would guess that there were 300 plus sets of traffic lights, and on top of that it was very wet.”

“It was like navigating London in the wet and very stop-start,” he added. “The Japanese are very good. There’s no road rage or anything like that, that doesn’t really exist there and they’re very peaceful, quiet and respectful people. It just means that you couldn’t really get a rhythm, and that made it quite difficult.

"It felt like you’d leave one set of traffic lights, do 350 watts or whatever to get up to speed again, but then you’re slowing down, so that was almost like intervals. Every traffic light became an interval.

“That was something that caught me off guard with this challenge. My average speed wasn’t that high, but when you realise just how busy it is, it’s hard to get it much higher.” 


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Tom Thewlis

Tom has been writing for Cycling Weekly since 2022 and his news stories, rider interviews and features appear both online and in the magazine. 

Since joining the team, he has reported from some of professional cycling's biggest races and events including the Tour de France and the World Championships in Glasgow. He has also covered races elsewhere across the world. 

As well as on the ground reporting, Tom writes race reports from the men's and women's WorldTour and helps with coverage of UK domestic cycling.