On Wednesday evening, Jasmin Paris became the first woman to win the gruelling 268-mile Montane Spine Race, which takes place every year along the Pennine Way.

As if that wasn’t impressive enough, the 35-year-old is currently breastfeeding and stopped to express milk along the route, which runs through the mountain tops of northern England and the Scottish borders.

Paris, who works as a vet at the University of Edinburgh, completed the course in a record time of 83 hours, 12 minutes and 23 seconds, beating the previous record by more than 12 hours.

“I’m not really sure how I managed to do it!” Paris told BBC Radio 5 Live after completing the race, revealing she hardly slept over the few days that she was running.

The conditions were less than ideal, with rain and wind almost every day. Paris also said she ran most of the race in the dark, with just a head torch for light.

“I am breastfeeding actually and I did have to express at the checkpoints,” she added, “although I had to express less as the days went on because presumably this is a race that doesn’t go that well with making a lot of milk!”.

Participants have one week to finish the race, though few manage to complete it.

It covers some of the most challenging terrain in the UK, including the Peak District, Yorkshire Dales and Cheviots, and involves climbing 43,000ft in total, which is more than the height of Everest at 29,029ft.

Paris is an established runner, having won a number of ultramarathons (any footrace longer than the conventional marathon length of 26.2 miles) in addition to coming first in the British women’s fell running championships last year.

Tour de France 2018: The story of the race Show all 84 1 /84 Tour de France 2018: The story of the race Tour de France 2018: The story of the race Stage one The pack leaves Noirmoutier-en-l'ile. AFP/Getty Images Tour de France 2018: The story of the race Stage one Chris Froome crashes, losing a minute of time. AFP/Getty Images Tour de France 2018: The story of the race Stage one A fan captures some of the build-up to the race. AFP/Getty Images Tour de France 2018: The story of the race Stage one Colombian debutant Fernando Gaviria celebrates his victory. AFP/Getty Images Tour de France 2018: The story of the race Stage two Sylvain Chavanel on the breakaway. AFP/Getty Images Tour de France 2018: The story of the race Stage two The pack rides through a roundabout AFP/Getty Images Tour de France 2018: The story of the race Stage two Australia's Heinrich Haussler is treated at the finish. AFP/Getty Images Tour de France 2018: The story of the race Stage two Peter Sagan celebrates his win. AFP/Getty Images Tour de France 2018: The story of the race Stage three Katusha-Alpecin warm-up for the team time trial. AFP/Getty Images Tour de France 2018: The story of the race Stage three Team Sky finished second... AFP/Getty Images Tour de France 2018: The story of the race Stage three ...Behind BMC. AFP/Getty Images Tour de France 2018: The story of the race Stage three Peter Sagan loses the yellow jersey to Greg Van Avermaet. AFP/Getty Images Tour de France 2018: The story of the race Stage three Spectators line the road. AFP/Getty Images Tour de France 2018: The story of the race Stage three Fans cheer the Tour and France at the World Cup. AFP/Getty Images Tour de France 2018: The story of the race Stage four Greg Van Avermaet in the pack. AFP/Getty Images Tour de France 2018: The story of the race Stage four Fernando Gaviria wins his second stage. AFP/Getty Images Tour de France 2018: The story of the race Stage five A photo taken with a tilt and shift lens shows the pack riding along the harbour of Concarneau. AFP/Getty Images Tour de France 2018: The story of the race Stage five Greg Van Avermaet leads the peloton. AFP/Getty Images Tour de France 2018: The story of the race Stage five Peter Sagan wins again. AFP/Getty Images Tour de France 2018: The story of the race Stage six The pack at the start of the stage. AFP/Getty Images Tour de France 2018: The story of the race Stage six Greg Van Avermaet stays in yellow. AFP/Getty Images Tour de France 2018: The story of the race Stage six Colombia's Darwin Atapuma stacks water bottles for his teammates. AFP/Getty Images Tour de France 2018: The story of the race Stage six Ireland's Dan Martin celebrates on the line. AFP/Getty Images Tour de France 2018: The story of the race Stage seven TOPSHOT - As seen from a spectators' car on the side of the route, a fan (L) points to Belgium's Greg Van Avermaet (R), wearing the overall leader's yellow jersey, cycling past during the seventh stage of the 105th edition of the Tour de France cycling race between Fougeres and Chartres, western France, on July 13, 2018. (Photo by Marco BERTORELLO / AFP) (Photo credit should read MARCO BERTORELLO/AFP/Getty Images) AFP/Getty Images Tour de France 2018: The story of the race Stage seven TOPSHOT - The pack rides during the seventh stage of the 105th edition of the Tour de France cycling race between Fougeres and Chartres, western France, on July 13, 2018. (Photo by Jeff PACHOUD / AFP) (Photo credit should read JEFF PACHOUD/AFP/Getty Images) AFP/Getty Images Tour de France 2018: The story of the race Stage seven Dylan Groenewegen wins and delivers a message to his critics. AFP/Getty Images Tour de France 2018: The story of the race Stage eight TOPSHOT - A spectator on horseback waves a French flag as the pack rides during the eighth stage of the 105th edition of the Tour de France cycling race between Dreux and Amiens, northern France, on July 14, 2018. (Photo by Marco BERTORELLO / AFP) (Photo credit should read MARCO BERTORELLO/AFP/Getty Images) AFP/Getty Images Tour de France 2018: The story of the race Stage eight The pack rides past the Notre-Dame des Andelys church. AFP/Getty Images Tour de France 2018: The story of the race Stage right Groenewegen takes another victory. AFP/Getty Images Tour de France 2018: The story of the race Stage nine Richie Porte crashes out of the Tour. AFP/Getty Images Tour de France 2018: The story of the race Stage nine The cobbles to Roubaix. AFP/Getty Images Tour de France 2018: The story of the race Stage nine Chris Froome reaches the finish. AFP/Getty Images Tour de France 2018: The story of the race Stage nine John Degenkolb celebrates his victory. AFP/Getty Images Tour de France 2018: The story of the race Rest day Chris Froome addresses the media. AFP/Getty Images Tour de France 2018: The story of the race Stage 10 The pack rides through the village of Manigod AFP/Getty Images Tour de France 2018: The story of the race Stage 10 Julian Alaphilippe celebrates on the line. AFP/Getty Images Tour de France 2018: The story of the race Stage 11 The breakaway climb. AFP/Getty Images Tour de France 2018: The story of the race Stage 11 Germany's Rick Zabel drinks after he crossed the finish line. AFP/Getty Images Tour de France 2018: The story of the race Stage 11 Geraint Thomas escapes to the finish in La Rosiere... AFP/Getty Images Tour de France 2018: The story of the race Stage 11 ...And celebrates a standout victory. AFP/Getty Images Tour de France 2018: The story of the race Stage 12 The pack ascends the Montvernier. AFP/Getty Images Tour de France 2018: The story of the race Stage 12 Netherlands' Steven Kruijswijk rides through flare bomb smoke AFP/Getty Images Tour de France 2018: The story of the race Stage 12 Geraint Thomas leads Chris Froome as the going gets tough. AFP/Getty Tour de France 2018: The story of the race Stage 12 Geraint Thomas escapes at the summit... AFP/Getty Images Tour de France 2018: The story of the race Stage 12 ... And clinches another stage win. AFP/Getty Images Tour de France 2018: The story of the race Stage 13 TOPSHOT - Spectators cheer as the pack rides during the 13th stage of the 105th edition of the Tour de France cycling race, between Le Bourg-d'Oisans and Valence, on July 20, 2018. (Photo by Marco BERTORELLO / AFP) (Photo credit should read MARCO BERTORELLO/AFP/Getty Images) AFP/Getty Images Tour de France 2018: The story of the race Stage 13 Chris Froome in the pack. AFP/Getty Images Tour de France 2018: The story of the race Stage 13 Geraint Thomas in yellow alongside his team-mate Gianni Moscon. AFP/Getty Images Tour de France 2018: The story of the race Stage 13 Peter Sagan celebrates another victory. AFP/Getty Images Tour de France 2018: The story of the race Stage 14 Winds split the peloton in four. AFP/Getty Images Tour de France 2018: The story of the race Stage 14 TOPSHOT - The pack, led by Great Britain's Team Sky cycling team teammates, with Great Britain's Geraint Thomas (4thR), wearing the overall leader's yellow jersey, rides through the Cevennes region during the 14th stage of the 105th edition of the Tour de France cycling race, between Saint-Paul-Trois-Chateaux and Mende on July 21, 2018. (Photo by Marco BERTORELLO / AFP) (Photo credit should read MARCO BERTORELLO/AFP/Getty Images) AFP/Getty Images Tour de France 2018: The story of the race Stage 14 Tom Dumoulin keeps his eye on Geraint Thomas. AFP/Getty Images Tour de France 2018: The story of the race Stage 14 Omar Fraile celebrates as he crosses the finish for a surprise win. AFP/Getty Images Tour de France 2018: The story of the race Stage 15 The pack rides under the Millau Viaduct. AFP/Getty Images Tour de France 2018: The story of the race Stage 15 Chris Froome and Geraint Thomas on route to Carcassonne. AFP/Getty Images Tour de France 2018: The story of the race Stage 15 Sky's Gianni Moscon would be later disqualified for punching another rider. AFP/Getty Images Tour de France 2018: The story of the race Stage 15 Denmark's Magnus Nielsen celebrates his calculated victory. AFP/Getty Images Tour de France 2018: The story of the race Rest day Dave Brailsford conducts and explosive press conference, blaming animosity towards Team Sky on "a French cultural thing". Getty Tour de France 2018: The story of the race Rest day Chris Froome and Geraint Thomas present a united front before the press. AFP/Getty Images Tour de France 2018: The story of the race Rest day Froome was asked if he expected Thomas to help him through the Pyrenees. "No," he said. AFP/Getty Images Tour de France 2018: The story of the race Stage 16 The race is interrupted by protesters. AFP/Getty Images Tour de France 2018: The story of the race Stage 16 Police use pepper spray. AFP/Getty Images Tour de France 2018: The story of the race Stage 16 The race is stopped as riders are aggravated by the pepper spray. AFP/Getty Images Tour de France 2018: The story of the race Stage 16 The race returns to the road. AFP/Getty Images Tour de France 2018: The story of the race Stage 16 Geraint Thomas in the pack. AFP/Getty Images Tour de France 2018: The story of the race Stage 16 Julian Alaphilippe celebrates victory. Tour de France 2018: The story of the race Stage 17 Chris Froome struggles up the Col du Portet, losing contact with the leaders. AFP/Getty Images Tour de France 2018: The story of the race Stage 17 Geraint Thomas breaks clear of his rivals in the final hundred metres... AFP/Getty Images Tour de France 2018: The story of the race Stage 17 ... And finishes second, increasing his lead to nearly two minutes. AFP/Getty Images Tour de France 2018: The story of the race Stage 17 Nairo Quintana celebrates a hard-fought victory on top of the Col du Portet. AFP/Getty Images Tour de France 2018: The story of the race Stage 18 The pack begin the final mountain stage of the race. AFP/Getty Images Tour de France 2018: The story of the race Stage 18 Nairo Quintana bears the injuries of an early crash. AFP/Getty Images Tour de France 2018: The story of the race Stage 18 Geraint Thomas in the peloton. AFP/Getty Images Tour de France 2018: The story of the race Stage 18 TOPSHOT - The pack rides through sunflower fields during the 18th stage of the 105th edition of the Tour de France cycling race, on July 26, 2018 between Trie-sur-Baise and Pau, southwestern France. (Photo by Jeff PACHOUD / AFP) (Photo credit should read JEFF PACHOUD/AFP/Getty Images) AFP/Getty Images Tour de France 2018: The story of the race Stage 18 Arnaud Démare wins the sprint in Pau. AFP/Getty Images Tour de France 2018: The story of the race Stage 19 Julian Alaphilippe and Audrey Amador on the descent. AFP/Getty Images Tour de France 2018: The story of the race Stage 19 Julian Alaphilippe shows his descending skills. AFP/Getty Images Tour de France 2018: The story of the race Stage 19 Tanel Kangert leads the breakaway up the famous Col du Tourmalet. AFP/Getty Images Tour de France 2018: The story of the race Stage 19 TOPSHOT - Slovenia's Primoz Roglic celebrates as he crosses the finish line to win the 19th stage of the 105th edition of the Tour de France cycling race, on July 27, 2018 between Lourdes and Laruns, southwestern France. (Photo by Jeff PACHOUD / AFP) (Photo credit should read JEFF PACHOUD/AFP/Getty Images) AFP/Getty Images Tour de France 2018: The story of the race Stage 19 Geraint Thomax extends his lead to more than two minutes with only a 31km individual time trial to go. AFP/Getty Images Tour de France 2018: The story of the race Stage 20 Tom Dumoulin prepares to begin his time trial, needing to beat Geraint Thomas by more than two minutes to win the Tour de France. AFP/Getty Images Tour de France 2018: The story of the race Stage 20 Geraint Thomas performs well, finishing third to all but seal his triumph. AFP/Getty Images Tour de France 2018: The story of the race Stage 20 Geraint Thomas lets the moment sink in. AFP/Getty Images Tour de France 2018: The story of the race Stage 21 Geraint Thomas and his Team Sky team-mates sip champagne on their victory ride to Paris. AFP/Getty Images

She continued running while she was pregnant with her daughter, Rowan.