The Dartmoor Discovery, the DD as it is affectionately known, is the UK’s longest single-lap road ultra marathon. 32.4 miles of road across one of Britain’s most exposed and demanding landscapes. Last weekend, Darren, my other half, ran it in driving rain and gusts of up to 45 miles per hour, finished third overall in a new personal best of 4 hours 4 minutes and 43 seconds, and I followed almost every mile of it from a car window.
This is not his race report. It is mine.
What Crewing a Road Ultra Actually Looks Like
I have crewed trail ultras. I have paced friends through the night on the Thames Path. But following a road ultra on Dartmoor in those conditions is something different entirely.
The plan was simple. Drive two miles ahead, pull over, wait, watch Darren pass, checking if he needed electrolytes, gels, jelly babies, water, etc then drive two miles ahead again. Repeat for 32 miles. In practice, it meant sitting in a car (that was having its own moments struggling on the hills) being rocked by 45mph gusts, watching the rain hammer the windscreen, then stepping out into the full force of Dartmoor weather to catch a glimpse of him moving through it.
He always looked stronger than the conditions had any right to allow.
The Race Conditions
Let me be clear about what 45mph gusts on an exposed Dartmoor road feel like. They are not inconvenient. They are genuinely challenging. At points, the wind was strong enough that runners were visibly being pushed sideways. When I say “at points”, the last 10k involved running head on into it!!!!! The rain was horizontal in places. The road surface was slick and wet for the entire distance.
169 runners finished the Dartmoor Discovery. Some were out there for over six hours. Every single one of them earned it. Wet, cold, battered by the wind and challenged by the elevation.
Thankfully, the organisation of this event is something else. The volunteers from the Teignbridge Trotters offered warmth, cups of tea, and were on hand to help the runners pull themselves together as they crossed the line. There were foil blankets for very cold and very wet people who had just done something remarkable, and sandwiches and cake for when they were feeling a little more with it. The kind of grassroots ultra organisation that reminds you why community running events matter so much more than any corporate race series.
The Race Itself
Darren is a strong runner across both road and trail. He came to the DD with genuine race sharpness and a clear plan. Over 32 miles in those conditions, the plan was to run his own race, manage his effort on the exposed sections and trust his fitness in the final miles when the field starts to fragment.
He finished third overall in 4 hours 4 minutes and 43 seconds. A personal best.
Watching him cross the finish line after following him across Dartmoor in a storm for four hours was genuinely moving. Not just because of the result, but because of what it takes to hold that effort for that distance in those conditions. The mental discipline required to keep pushing when the wind is trying to push back is something you can only fully appreciate when you are watching it from the outside.
What the Dartmoor Discovery Has Taught Me About Road Ultras
I spend most of my time thinking about trail running, fell racing and ultra marathons on mountain terrain. The Dartmoor Discovery reminded me that road ultras demand something just as specific and just as hard.
The absence of trail, no roots, no mud, no technical ground to navigate, does not make it easier. It makes it different. The unrelenting repetition of tarmac underfoot for 32 miles does things to your legs that a varied trail surface does not. The exposure on Dartmoor in those conditions was as demanding as anything I have experienced on a mountain race. The mental requirement to keep pushing on a road when there is nothing to look at but the next mile marker and the wind is trying to stop you is its own particular challenge.
169 runners finished the Dartmoor Discovery last weekend. They all deserve enormous credit. And Darren, running into third place in a new PB in driving rain and 45mph gusts, that was something special to watch.
Darren’s View of the Race
It would not be fair to publish this without a word from Darren. He was the one who ran it after all. It is not unusual for me to fail to let him get a word in edgeways, so here is his chance.
Three days later, he is still complaining about DOMS in his legs. His quads are, as he puts it, smashed. He also had a very direct exchange of views with the wind and rain at some point during the race. The phrase he used is not suitable for publication, but the sentiment was clear. The weather was not welcome, and it was not listening.
His initial plan for this race was to go for a sub-four-hour time. He wasn’t even thinking about where he would place; he just wanted to go under 4 hours, which is a time he is truly capable of, and if it hadn’t been for the last 10k into a headwind, he probably would have done it.
He felt good early on, having gone off slightly steadier than his six-minute mile pace from 2024. The plan was to protect his quads on the downhills rather than hammer them early, and he stuck to it. He was not banking on a strong race until he had reached the half marathon point and climbed up from Ashburton. Once he was over that climb, he started to believe a sub-four hours was possible. He had been running in second place until around mile 22, when someone having a stronger second half caught and passed him. Now the race was on to hold on for that podium place.
The route flattens a little around mile 25, but by then the wind had made its feelings very clear, and the sub four was gone. He held on. He was cold, wet and hurting. He was praying for the finish line. He just got on with it.
Third place and a new personal best in those conditions. Not a bad day out on Dartmoor.
Shoes for a Road Ultra in Horrible Conditions
The Dartmoor Discovery is a road race. Despite the landscape, despite the exposure, despite the weather, it is run entirely on road. That distinction matters enormously for shoe choice.
On a road ultra, the demands are completely different from those on a trail. You need cushioning that holds up over 30-plus miles of tarmac. You need energy return that keeps your legs fresher deeper into the race. You need a shoe that handles wet roads confidently without the aggressive grip pattern of a trail shoe that wears quickly on hard surfaces.
This is exactly where carbon-plate road-racing shoes earn their place. The energy return from a carbon plate shoe reduces the muscular load on your legs over long distances; the same reason I experienced less DOMS after wearing carbon plate shoes in my own running. Over 32 miles in those conditions, that energy return is not a luxury. It is a meaningful performance advantage.
The Adidas Adizero Adios Pro 4 is the carbon plate road shoe I would recommend for an event like the Dartmoor Discovery. I have reviewed it extensively, raced in it, tested it over road miles, and the combination of LIGHTSTRIKE PRO foam and carbon-infused ENERGYRODS delivers exactly the energy return a road ultra demands. See our full Adidas x Footpatrol Adizero Adios Pro 4 review for the complete verdict.
BUY ADIDAS X FOOTPATROL ADIZERO ADIOS PRO 4
For runners with wide feet, and many runners find their feet spread significantly over ultra distances, sizing up is essential in carbon plate shoes. I went up a full size in the Adios Pro 4, and it made the difference between a shoe that works and one that does not. See our wide fit trail shoes guide for more on running with wider feet.
I should note that Darren chose a pair of Vaporfly for this race. I have run in Nike and Adidas carbon shoes, and my personal choice would have been the Adidas all day long (he doesn’t have them, though).
About the Dartmoor Discovery
The Dartmoor Discovery is organised by the Teignbridge Trotters and is the UK’s longest single-lap road ultra marathon at 32.4 miles. It is held annually and attracts runners from across the UK. For more information, visit the Teignbridge Trotters website. Run numerous times by fellow Weston Athletic Club member, Kieron Summers, who came first in 2021 and 3rd in 2022, you can read his report of the 2022 race here.
Frequently Asked Questions
What is the Dartmoor Discovery?
The Dartmoor Discovery, known as the DD, is the UK’s longest single-lap road ultra marathon at 32.4 miles. It is organised by the Teignbridge Trotters and run across Dartmoor in Devon.
What shoes should I wear for the Dartmoor Discovery?
The DD is run entirely on road, so trail shoes are not appropriate. A well-cushioned road shoe with good energy return is the right choice for 32 miles of tarmac. Carbon plate road racing shoes like the Adidas Adizero Adios Pro 4 offer meaningful energy return that reduces leg fatigue over ultra distances on road.
How hard is the Dartmoor Discovery?
Very hard. The route covers 32.4 miles of exposed Dartmoor road with significant elevation and weather exposure. In 2026, runners faced driving rain and gusts of up to 45mph. 169 runners finished, with some out on the course for over six hours.
Is the Dartmoor Discovery a trail race?
No — the DD is run entirely on road despite crossing Dartmoor. Trail shoes are not required or recommended. A road ultra shoe with strong cushioning and energy return is the appropriate footwear choice.
What support is available at the Dartmoor Discovery?
The Teignbridge Trotters organise a well-supported event with aid stations, a finish line buffet, cups of tea, foil blankets and volunteer support for finishers. The community atmosphere and quality of organisation make it one of the most welcoming ultra events in the South West.
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