Sonia Bracegirdle

Sonia Bracegirdle・Professional triathlete

Quick facts


Sonia Bracegirdle

Born in Whangarei, New Zealand.

MA/MSci in Chemistry (Cambridge), DPhil (PhD) in Organic Chemistry (Oxford).

Ex-junior triathlete, rower & ultramarathoner.

Married to a Belgian & living in Haarlem, The Netherlands.





I was born in the bustling metropolis of Whangarei, New Zealand, and grew up in Waiuku and Auckland.

1997 - 2003

I got my first taste of triathlon at the brilliant Kiwi Kids Trythlon series in 1997, and continued to compete throughout high school.

2004 - 2011

In 2004 I moved to the UK on a scholarship to Cambridge University, where I studied chemistry. I learnt to row with my college, and went on to win the Blue Boat Race as part of the 2007 Cambridge heavyweight crew. I then moved to Oxford University for my DPhil (PhD) in Organic Chemistry, and won another three Blue Boat Races in 2009, 2010 and 2011.

2012 - 2016

I started my career in management consulting (McKinsey Melbourne and BCG London), and tried my hand at a few endurance events. The Raid Pyrénéen, Club des Cinglés du Mont-Ventoux challenge and the La Marmotte race were some of the highlights of many vertical meters on the bike, while an overall win (from both women and men!) at The Wall ultramarathon (69 miles) in 2013 confirmed that I firmly belong in the slow-twitch camp.

2017 - present

In 2017 I returned to triathlon after a 14-year hiatus, with a focus on longer distance events. I decided to resign from my job in biotech venture capital after recording a couple of good results over the half-ironman distance, and started racing professionally in 2018.