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100 miles in under 2:50hrs: Jonathan Parker claims to have clocked the fastest 100 miles ever recorded on a bike

The (pending) world record ride uploaded on Strava puts Jonathan Parker’s time at eight minutes quicker than Jonathan Shubert’s RRA record. Here’s how he did it

Time trial specialist Jonathan Parker claims to have broken the record for the fastest 100 miles during a “test run” this weekend (Saturday, 13 March) with an incredible time of 2:49:58, eight minutes under the current RRA record held by science teacher Jonathan Shubert. 

2021 Jonathan Parker RRA record screenshot 2.JPG

The 46-year-old barrister rode at an average speed of around 35.29mph (56.8km/h) on an A-to-B course from the top of Qatar to a road that ends in the desert in the south of the country.

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100 miles is 160.9km, but Parker rode on a little further to 161.08km, “just to be sure,” and stopped his cycling computer at 2:50:12. By his calculation, this puts his 100-mile time at 2:49:58.

If the ride he has uploaded to Strava is verified as accurate, that puts his mark at eight minutes quicker than the current RRA (Road Records Association) record holder Jonathan Shubert's time of 2:57:58, that he set just a few months back on November 2 2020. Parker's ride won't be a new RRA record in any case, because it took place in Qatar. According to RRA rules, attempts on its twenty-five mile, fifty mile, hundred mile, twelve hour, twenty-four hour and thousand mile records "may be made in any part of Great Britain provided that easily distinguishable landmarks shall be chosen for the starting, turning and finishing points". An official timekeeper and observers also have to be present for RRA records to stand. 

With Parker's existing London-Paris world record being verified by Official World Record, it looks like his effort will be verified by this organisation. 

2021 Jonathan Parker RRA 100 4

Parker has submitted his data for verification of a new solo world record. As the mark was set on a point-to-point course, the nature of his effort differs from records held by the likes of Cycling Time Trials, who only recognise records that are set in competition. Marcin Bialoblocki holds the equivalent CTT record at 3:13:37. 

Not only was this Parker’s first attempt, he “wasn’t trying for the record this time out,” he says.

“I did the ride a few weeks ago on a road bike and it was super quick, so I planned to do a test run on the TT bike. The plan was to smash it until I fell apart, then go and analyse the data to see if the record was doable.

“I didn't even know I was going to do a test run until the afternoon before. I had been looking for good conditions, and the wind direction forecast changed on the Friday afternoon. I had done a few days' training and a 100km ride the day before—not the best preparation!"

Parker csays he had a 33km/h (20.5mph) "cross tailwind" which he admits he “didn’t think would be enough”, as he claims Jonathan Shubert had a more favourable 38km/h (23.6mph) tailwind.

2021 Jonathan Parker RRA 100 2

“But when I started, the average speed was great and I felt pretty good, so I just kept going. After about 120km, it was clear that I had a chance to beat the record if I could keep going to the end. I'd not really been pacing for the whole ride though and that last 40km was nothing short of horrible. I stopped pedalling lots towards the end, just to get small breaks.”

With a body weight of 79kg, Parker dug in to hold a normalised power of 318 watts over 100 miles. “There was a horrible slow crosswind section where I really had to tuck in and push 390 watts for nine minutes.”

While this may have been Parker’s first go at the 100-mile record, he has completed several impressive rides to raise money for Cyclists Fighting Cancer.

“In 2016 I raised around £11k setting the London to Paris world record, in 2019 I raised £14,000 attempting a record crossing the "desert of death" in China (it ended with a crash and broken bone), and last year due to lockdown I raised £4,000 doing a six-hour Zwift ride with my long term coach, Matt Bottrill.

“If the test run suggested the 100-mile record was possible, I had intended to try and raise over £10,000 for Cyclist Fight Cancer. I'm going to have to find a new challenge now.”

The course

Although Parker has a house back in Herne Bay (Kent) he mainly lives in Doha (Qatar) and this is where he set his (pending) record time.

2021 Jonathan Parker RRA record

“Given the size of Qatar, there wasn't much choice of route. I had about 1.5km left at the end before I hit sand. Qatar is very flat, so there was no opportunity for a long downhill start and roads like the ones I used have very little traffic, so there was no being sucked along with the flow.

“Looking at the data and pictures from the previous record, it appears that there was a long downhill section at the start, then a lot of cars en route. Without those, I wasn't sure if I could beat the record. This was the main reason for the test run to gather data,” Parker explained.

Parker’s friend drove him to the start, followed the whole ride and then brought him home afterwards. “He had spare wheels, tools, etc. in the car in case of mechanical problems," said Parker.

Although most of the roads were quiet, Parker did experience a close call.

“At one stage a truck was overtaking me on a two-lane highway whilst another truck was trying to join my lane from a slip road. If the battery in my heart rate monitor was working, you'd have been able to see where that happened from the data.”


The TT specialist was aboard a Giant Trinity Advanced Pro, with a Pro tri-spoke wheel at the front and Aerocoach disc at the rear, along with Speedplay aero pedals and an SRM power meter.

2021 Jonathan Parker RRA 100 3

But the bike is not the only important bit of kit when it comes to a record-breaking attempt and Parker ensured he optimised in other areas too.

“I've done a lot of aero testing (wind tunnels and track, plus using Notio to do my own testing), and clothing makes a big difference,” he said.

This guided his choices towards using Endura’s Encapsulator SST skinsuit and POC’s Tempor helmet.

He added: ”There is a lot of attention to detail on drag savings given that over 100 miles at high speed, just 2-3 watts can make a significant difference. Small details to reduce drag include the use of Speed Skewers and taping the vents in the helmet, while other forms of drag were minimised through such means as coating the chain in melted PTFE powder and running the super low rolling resistance Veloflex Record 2020 tyres.”

For gearing, Parker used a PCD oval single 58 tooth chainring, which he says is around the equivalent of 60t at the high points of the oval. He had a 62 tooth chainring on order that he was planning to swap in for the actual record attempt.

“I'm an old grinder. When I won the Qatar national championship TT in January, I averaged 78 cadence. On the really fast parts I was doing 105 rpm cadence – that's unchartered territory for me and was a struggle.

“A side effect was a lot of movement of the saddle causing sore bits after 40 minutes and getting worse as time progressed. It's still sore to sit down a day or so after.”

Then there’s the fuelling. This is something Parker takes very seriously. He said: “I tend to calculate my nutrition quite carefully on all rides over an hour – to the point that friends laugh at me with my timers to remind me to take a gel.”

2021 Jonathan Parker RRA 100 1

For the attempt, Parker said: “I used a mixture of sports drinks and gels that have a 2:1 glucose-fructose mix, as the body can oxidise more carbs per hour with fructose included as the GLUT5 transporter is engaged. I take 90g of carbs per hour and 600ml of fluid.”

Parker says it usually takes a few weeks for records to be verified; we will update this feature if/when there’s confirmation.

Add new comment


Liam Cahill | 3 years ago

Aside from the techy stuff which is great, I love that this is science teacher vs barrister in a battle of weird things to do at the weekend.

Love it

Miller | 3 years ago

Article says, "the nature of his effort differs from records held by the likes of Cycling Time Trials, who only recognise records that are set in competition."

Not only but also, CTT courses are not point to point but out and back. The finish has to be close to the start. You can't have an entirely tailwind ride in a CTT event (unless you get spectacularly lucky with changing weather).

nafaiutb | 3 years ago

Impressive ride but couldn't you have got someone who speaks English to write the headline?

'Jonathan Parker claims to have rode'


SlowOldSteve | 3 years ago

Wow! Congratulations,  that's a hell of a test ride. As I live in Herne Bay there's a fair chance that he may have been one of the many riders that have overtaken me!


Wardy74 | 3 years ago

Editorial standards please.
He/I rode.
I have /he has ridden.

He rided really fast though.

Secret_squirrel | 3 years ago

Eh? Surely if the record has to be set in GB this is a rather moot point?

Gkam84 replied to Secret_squirrel | 3 years ago
1 like

Secret_squirrel wrote:

Eh? Surely if the record has to be set in GB this is a rather moot point?

Not for Guinness, it can be anywhere in the world, RRA is GB only. So if verified, he'll hold a world record, not that it means much, because Guinness accept pretty much anything these days if you pay the fee.

They used to require independent adjudicators to very that it was done and within the rules laid down. These days, a couple of carefully taken photos and a digital file, along with the application fee and you are set.

I don't doubt for one minute that he did this ride, but as has been shown by Zwift, digital files are easy enough to alter to suit your purpose and if those looking at the file don't know what they are looking at, it would be easy enough to get something past them.

Simon E replied to Gkam84 | 3 years ago
1 like

Gkam84 wrote:

RRA is GB only.

Was thinking the same. RRA would also require advance notice of an attempt so Shoobs can rest easy for now.

These things and more are stated on the homepage -

Secret_squirrel replied to Gkam84 | 3 years ago

Yea but then why the invalid comparisons to the RRA record?  Surely there is a pre-existing World Record thats a better comparative.

Gkam84 replied to Secret_squirrel | 3 years ago

Secret_squirrel wrote:

Yea but then why the invalid comparisons to the RRA record?  Surely there is a pre-existing World Record thats a better comparative.

The RRA record would be the only one close in terms of time/speed to compare.

The World Ultra-Cycling Association keeps some records, although these have gone dramatically downhill since they reformed from the Ultra Marathon Cycling Association. The problem being, they tend to be people who just pay to do a record for the sake of it because there is a gap they can slot into. The fastest male standard bike they have for 100mile road is 3:48:06. Many of their "world" records were set as part of other attempts, so someone could be going for a 6/12/24 record, but have all the intervals recorded aswell 100km, 100mile, 200km, 200mile...etc right up to the 500 mile mark.

Miller | 3 years ago

He sure looks the part. That head-down riding style though... anyway congratulations to him.

lesterama | 3 years ago

I wonder if a cross-tailwind is better than a tailwind for RRA attempts - plenty of sail effect from the disk.

PRSboy | 3 years ago

Blimey, 308 watts average for nearly three hours.  I can just about manage 3 minutes at that!

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