Harriet Frost: 2x Arc of Attrition 100 mile finisher, Race Director, Business Owner of Grit Culture, Co-parent of Sea+Flo supporting people to upgrade their periods.
Release Date: 05/20/2025
Rebecca Devereux – Mum, Vet, Trail Runner, and 3rd Place Finisher at the Montane Winter Spine Sprint
Tough Girl Podcast
In this episode of the Tough Girl Podcast, we’re joined by the incredible Rebecca Devereux — a dedicated mum, a vet, and a passionate trail and ultra runner. Rebecca shares her journey into endurance running, her training highs and lows, and what it took to place third in one of Britain’s most brutal races — the Montane Winter Spine Sprint, a 46-mile challenge across the rugged Pennine Way in the depths of winter. We dive into Rebecca’s approach to training and mindset, how she balances family life with her love for the trails, and her growing involvement with Black...
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Helen Ryvar – Running Through Grief, Finding Strength & Breaking Records | 1,000 Consecutive Half Marathons (May 2022 – Jan 2025) 🙌 Inspiring Others to Be Their Best ❤️
Tough Girl Podcast
What began as a way to cope with grief became a world record-breaking journey that’s taken Helen Ryvar across the globe — from sunrise runs in North Wales to volcanic trails in Fuerteventura and the ancient deserts of Petra. A single mum of three and a self-described non-athlete in her youth, Helen’s transformation into a Guinness World Record holder for running consecutive half marathons is nothing short of awe-inspiring. In this deeply personal episode, Helen opens up about the heartbreak that sparked her first streak, how running became her therapy, and the mental and physical...
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Caroline Livesey – Extreme Triathlete and Elite Gravel Cyclist: Winning Races, Breaking Limits, and Giving Back
Tough Girl Podcast
Caroline Livesey is an adventurer, extreme triathlete, ultracyclist, elite gravel cyclist and triathlon and life coach. Caroline started her journey into triathlon while serving with the Royal Engineers in the British Army. After 10 years service she left as a Major in 2013 and pursued a career as a professional triathlete (while working full time as a geotechnical design consultant), originally in Ironman events. In 2019 circumstances conspired to throw her into her first extreme triathlon, Canadaman XTRI. Winning this event was the catalyst for her to work on her mindset and...
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Dr. Sheridan Lathe - Sailing the World to Deliver Veterinary Care to Remote Communities
Tough Girl Podcast
In this inspiring episode of the Tough Girl Podcast, we set sail with Dr. Sheridan Lathe, aka Dr. Sheddy — a wildlife veterinarian, sailor, YouTuber, and passionate advocate for both animal and human wellness. After years of working with domestic and exotic animals in Australia and rescuing bears in China, Dr. Sheddy took her expertise to the seas. Now based on her 37ft sailboat Chuffed, she delivers free veterinary care to animals in remote coastal communities across Central America and Mexico — reaching places where traditional care simply doesn’t...
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Tinuke Oyediran: Adventure Presenter, Survivor UK Star. Committed to showing diverse audiences that anyone, regardless of background, can experience life to the fullest.
Tough Girl Podcast
In this episode, we sit down with Tinuke Oyediran, an extraordinary adventure presenter and thrill-seeking daredevil who’s breaking barriers in the world of extreme adventure. You may recognise Tinuke from her recent stint on Survivor UK on BBC1, but her journey goes far beyond reality TV. Tinuke is on a mission to show that anyone, regardless of background, can embrace life’s greatest adventures and that the most rewarding experiences often come from stepping out of your comfort zone. From sleeping on the side of a mountain and walking the wing of an aeroplane to climbing glaciers,...
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Ann Whatmore: A Fearless Adventurer Who Proves Severe Asthma Doesn’t Set Limits – Cycling 3000km Across the UK on a Recumbent E-Trike
Tough Girl Podcast
In this episode, we’re joined by the fearless Ann Whatmore, an adventurer who proves that asthma doesn’t have to set limits on what you can achieve. Ann has faced numerous health challenges, but rather than letting them hold her back, she’s embraced adventure in a big way. In May 2024, she cycled over 3,000km across the UK on her recumbent e-trike, “Bob,” completing a solo journey from Land’s End to Orkney before speaking at Yestival. This was no easy feat – Ann had only a sixth of her lung function available and had to rely on determination, resourcefulness, and a...
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Aisling Byrne: International Showjumper and Businesswoman on Surviving a Devastating Riding Accident and Defying the Odds to Walk and Compete Again
Tough Girl Podcast
In this powerful episode, we meet Aisling Byrne — an international showjumper, successful businesswoman, and an extraordinary example of resilience in the face of life-altering adversity. After a devastating horse riding accident left her with multiple broken bones, internal injuries, and the prognosis that she would never walk again, Aisling refused to accept defeat. Over the course of a gruelling three-year recovery, she not only walked again — she returned to the international showjumping circuit, proving that mindset, grit, and determination can overcome even the most impossible...
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Pamela Lee: Irish Offshore Sailor, World Record Holder, Empowering Women Through Sailing, Training for Route du Rhum 2026.
Tough Girl Podcast
In this episode of the Tough Girl Podcast, we’re joined by Pamela Lee, a professional offshore sailor from Ireland who’s breaking records and barriers in one of the most extreme, male-dominated sports on the planet. Now based in Brittany, France—the heart of short-handed offshore racing—Pamela has carved out her path with grit, determination, and a clear vision for empowering women through sailing. Pam shares her journey from growing up beside the sea in Ireland to becoming the first Irish woman to skipper the Transat Jacques Vabre Race, setting three world records...
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Bianca Fernandez-Clark: 7x Ironman Finisher and Founder of Women in Tri UK, Making Triathlon More Inclusive for Women.
Tough Girl Podcast
Bianca Fernandez-Clark is a 7x Ironman finisher, Chair, and co-founder of Women in Tri UK, a charity on a mission to bring more women into triathlon and break down barriers in the sport. With no background in sport, Bianca laced up her trainers at age 29 to tackle a 10km as a way to manage her mental health. From there, she progressed to marathons and, in 2016, took on the challenge of learning to swim and cycle to complete her first triathlon. As a Black/mixed-race woman, Bianca has been vocal about the lack of diversity in triathlon, especially at long-distance events, and has worked to...
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Harriet Frost: 2x Arc of Attrition 100 mile finisher, Race Director, Business Owner of Grit Culture, Co-parent of Sea+Flo supporting people to upgrade their periods.
Tough Girl Podcast
Harriet Frost is a force of energy, endurance, and entrepreneurial grit. From completing the notorious Arc of Attrition 100-mile ultra twice, to directing multiple trail races, to co-founding a menstrual cup company focused on sustainable period care for athletes — Harriet is redefining what it means to pursue hard things, in business and on the trail. In this episode, Harriet shares her journey from growing up in Cornwall to discovering a love of endurance sport later in life — despite hating running at first. With no formal coaching, she’s built her own training strategy...
info_outlineHarriet Frost is a force of energy, endurance, and entrepreneurial grit.
From completing the notorious Arc of Attrition 100-mile ultra twice, to directing multiple trail races, to co-founding a menstrual cup company focused on sustainable period care for athletes — Harriet is redefining what it means to pursue hard things, in business and on the trail.
In this episode, Harriet shares her journey from growing up in Cornwall to discovering a love of endurance sport later in life — despite hating running at first. With no formal coaching, she’s built her own training strategy based on experience, discipline, and gut instinct — and it’s taken her to the finish lines of some of the UK’s most brutal ultra events.
We also dive into the founding of Sea+Flo, a period care company created by women, for women, aiming to empower people to better understand and manage their menstrual health during sport. Harriet speaks candidly about the mental strength required to train alone, run in the dark, and manage periods while racing, as well as her mission to bring more female voices to the forefront of adventure and endurance media.
This is a conversation about grit, vulnerability, and showing up — again and again — even when the path ahead is long, muddy, and uncertain.
New episodes of the Tough Girl Podcast drop every Tuesday at 7 AM (UK time)! Make sure to subscribe so you never miss the inspiring journeys and incredible stories of tough women pushing boundaries.
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Show notes
- Who is Harriet?
- Completing her 2nd Arc of Attrition 100 mile ultra
- Race Director to 2 current races and soon to be a 3rd
- Running her own business called, Grit Culture - focused on business management
- Launching a menstrual cup company called Sea+Flo in 2024 with her best friend
- Dog mum to November
- Being surrounded by an amazing network of friends and family
- How things connect together
- Speaking with Harriet mum, Theresa Frost on the Tough Girl Podcast
- Having parents to everyone
- Childhood and growing up in Cornwall
- Learning resilience and grit from a young age
- Being supported by her parents
- Loving school and heading off to University in Southhampton to study fashion and journalism
- Not really knowing what she wanted to do
- Travelling and working on super yachts
- Heading off to London for 3 years
- Spending time in Australia for 2 years, and New Zealand for 2 years, before moving back to Cornwall
- Hating running…. And finding running really hard
- Living in London and doing her first triathlon in 2012/2013
- Doing her first marathon during her first 100k
- Race to the Stones 2017
- Doing her next ultra in 2023 - Isle of Wight in April
- Arc of Attrition on the South West Coast Path. 100 miles.
- Entering the race
- The Plague 64 miles race (toughest races she’s ever done)
- Planning her own training and talking things through with her mum
- Going on how her body feels and past experience
- Working backwards from the race start date
- Focusing on back to back runs
- The mental toughness of training and training solo
- Out and back runs and the mental challenge
- Knowing there is still more in her
- Fitting running into her life
- Training in winter and in the dark
- The stress of running in the dark as a female and the wasted energy
- Why it’s discipline over motivation
- Recovery…. And what it looks like
- Having big toe strain
- Why the Arc was different in 2025 after being taken over by UTMB
- Feet and blisters
- Nutrition, food, fuelling
- The struggle of eating food
- Practicing eating on 20 milers
- Training and periods
- Sea + Flo reusable menstrual cup company
- Which menstrual cup?
- How using a menstrual cup came about
- Putting herself out there a bit more
- Women doing amazing things and not getting enough airtime
- Nikki Love breaking the women’s record for running across Australia
- “It’s not about beating the men it’s about winning for the women” - Hannah Paradise
- Jasmine Harrison - swimming the length of Great Britain and not being able to to get a book deal -
- The lack of stories of women in the news
- The women who inspire Harriet
- Lucy Gossage - “It’s a privilege to choose to suffer”
- How to connect with Harriet online
- Final words of advice for women who want to pursue endurance sports
- Being inspired by Sarah Wilson
- Building your resilience in sport or physical challenges and how it can help you in your everyday lives
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