Search
shop

Defying the docs: Rainsley on the challenges of racing with Crohn’s

On Inflammatory Bowel Disease Day, Sian Rainsley talks about her triathlon journey since being diagnosed with Crohn's
Last updated -
Get the ultimate guide to destination racing

Sian Rainsley recently finished fourth at Super League Triathlon’s Arena Games in Singapore, just weeks after a sixth-placed finish in London. She is now targeting success in both Super League and the WTCS in 2022.

Next up on the calendar is WTCS Leeds on June 11, her home race. And there’s also the chance of a Commonwealth Games berth for the 25-year-old.

But in 2018 she was told her elite triathlon career was over after she was diagnosed with Crohn’s disease.

On what is IBD (Inflammatory Bowel Disease) Day, Rainsley tells her story.

Advertisement

‘Lowest point of my life’

“At first I had no idea how Crohn’s would impact me,” said Rainsley, who is currently ranked fourth in the World Triathlon Championship Series (WTCS), of her diagnosis.

“It wasn’t until 2018 when I had a massive flare up that it all really hit home.

“I was hospitalised for a few days with it, and that was when the doctors told me that it would be impossible to continue into elite sport – especially an endurance sport like triathlon.

“It was the lowest point of my life. Without the love and support of friends and family, who knows where I’d be now.

Sian Rainsley tells her story on Inflammatory Bowel Disease (IBD) Day
[Credit: Portfolio Sport]

Building back confidence

“It took me a while, but over the next two years I built back my fitness, but more importantly my confidence working with coaches and dieticians that understood my condition.”

When COVID hit, Sian’s plans to turn pro were once again delayed. She added, “It was yet another knockback. I honestly wondered if it was ever going to happen. But in 2021 I made the move into the pro senior ranks and have never looked back.”

Crohn’s disease is a lifelong condition which causes inflammation to large parts of the digestive system which can have a debilitating effect on an individual’s standard of life.

Over 300,000 people in the UK are known to be living with the disease. Alterations to diet and medications can help lessen the symptoms for many, but to continue competing within elite sport is another challenge entirely.

Rainsley was forced to make alterations to her training methods after her Crohn’s disease diagnosis. [Credit: Portfolio Sport]

“When it comes to training and racing, I have to focus on the same things as every elite athlete, just some are more important and need to be adapted for my training.

“I have to be acutely in tune with my body and recognise the signals that can lead to a flare up. If I’m feeling run down, I can’t just push through it, I need to rest and err on the side of caution.

“I therefore factor in more sleep, more recovery time, and manage my intensity level more based on how my body is reacting, rather than sticking to a concrete training programme.

Sian Rainsley Arena Games Triathlon Finals Singapore
Photo Credit: Darren Wheeler – That Cameraman/SuperLeague

“Fuel and hydration are also key. For this I work with a British Triathlon nutritionist to manage my diet and swear by recovery protein shakes.

“Crohn’s can also affect my muscle recovery. I suffer from DOMS to a much greater extent than others. In extreme circumstances I’ve even experienced Exertional Rhabdomyolysis, or muscle breakdown, where my body uses my muscle as a source of fuel.

“It’s a real balance for my training with flexibility being at the heart of my strategy. I have to push myself, but also be sensible with how hard I go.”

HAMBURG WASSER 2021 World Triathlon Championship Series Hamburg / Sian Rainsley
Stuart Dick
Written by
Stuart Dick
Stuart is a graduate of the University of Sunderland with a masters' degree in Sports Journalism. He spends a lot of his time running and cycling around West Yorkshire, England.
Discover more
tri-fit vortex tri suit review
TRI-FIT VORTEX tri suit review – race day approved performance
Maja Stage Nielsen Kat Matthews Jocelyn McCauley IRONMAN Texas 2023 podium photo credit IRONMAN
PremiumRacing to keep up: Is social media making us train harder?
Cadomotus chronos aero triathlon cycling shoes
The triathlon cycling shoe that promises a 10-watt saving: Cadomotus Chronos Aero triathlon cycling shoes review
Wahoo ELEMNT RIVAL
PremiumTraining to heart rate vs power on the bike
Caroline Pohle Lena Meissner ironman 703 jonkoping sprint 2025
PremiumHow to pace a triathlon to leave it all out there WITHOUT blowing up
latest News
Hayden Wilde finish line T100 London 2025
Hayden Wilde’s ‘DIABOLICAL’ race schedule as he chases both T100 and WTCS titles
Vincent Luis San Francisco 49ers tri suit 2025
Triathlon great Vincent Luis plotting T100 comeback after injury setback
Alistair Brownlee Olympics Triathlon London 2012 Podium Gold
It’s exam results time – and Olympic legend Alistair Brownlee nails the careers advice
Jess Learmonth T100 Vancouver joy 2025
Jess Learmonth is still daring to dream after childbirth and injury comebacks
Marten Van Riel finish line T100 Dubai 2024 photo credit PTO / T100
Van Riel faces World Championship fitness battle after revealing injury and mental health concerns
triathlon on your terms
Never miss out with our triathlon alerts & digest. Get a dose of adventure & inspiration with Boundless.
The 247 Group

The home of endurance sports

TRI247-LOGO_Primary-Black_RGB-1

CHOOSE YOUR MEMBERSHIP TO BECOME PART OF SOMETHING EPIC

We’re on a mission to elevate the world of endurance sport, becoming your go-to resource for expert training tips and inspiration, unbiased reporting and creating a platform for grassroots voices. But we can’t do it without you on board! Choose a TRI247+ membership option below and become part of something epic.

All plans include a 7-day free trial

£7.95/month

Unlimited access. No ads. A whole library of tips, advice and inspiration at your finger tips, and the chance to shape the future of triathlon journalism.

100+ new articles/month

You’ll also gain access to our other premium websites:

Have an account? Sign in

All plans include a 7-day free trial

£47.95/year
£95.40/year

50% Discount

100+ new articles/month

Unlimited access. No ads. A whole library of tips, advice and inspiration at your finger tips, and the chance to shape the future of triathlon journalism.

You’ll also gain access to our other premium websites:

Have an account? Sign in

Share to...