Helene Diamantides was born in 1964 in North Yorkshire, but she spent most of her childhood outside England. She lived in Ghana and later in Greece where as a teenager she competed internationally in the pentathlon and her running ability was encouraged and developed. At sixteen, she completed her first marathon. In 1982 she moved to Durham to study for a degree in education. It was through the University of Durham's running club that she first began fell running. Over the next five years she competed in various fell races, including the Karrimor International Mountain Marathon.
In 1987 Diamantides completed her first Bob Graham Round : to run over 42 Lake District peaks within 24 hours. Later that year she and fellow fell-runner Alison Wright went to Nepal to attempt to break the record for running from Everest Base Camp to Kathmandu. This is a route which includes of ascent. Both women completed the route in a record of 3 days, 10 hours. In 1988 Diamantides won both the women's events in the 31 kmMount Cameroon race and the Mount Kinabalu race in Borneo; and she came third in the Hogger 'Super Marathon' in Algeria. In the same year she also set a new women's record for the BG: 20 h 17 min. The next year Diamantides' ambition was to complete in one summer all three of the classic British 24-hour rounds: the English Bob Graham Round, the Welsh Paddy Buckley Round, and the Scottish Ramsay Round. The first was the Paddy Buckley which was completed in 20 h 8 min; beating the men's record by two hours. One month later she ran the Ramsay Round. She was then only the sixth person to successfully complete it and did so with a time of 20 h 24 min. In 1992, with Martin Stone, Diamantides entered The Dragon's Back race, a new five-day race across the length of Wales; she and Stone won the race in 38 h 38 min. During the 2012 second running of the Dragon's Back Race, Diamantides finished in fourth place overall and first place as a woman. She won the Borrowdale Fell Race four times, with her 1999 time of 3 h 14 min 45 s the second-fastest ever in the women's race and within ten seconds of Menna Angharad's course record. In 1990, Diamantides set a course record in the Wasdale Fell Race, which stood until 1997 when it was beaten by Mari Todd. Diamantides held the course record for the Langdale Horseshoe from 1992 until 2016, when it was broken by Victoria Wilkinson.
Personal life
Diamantides has two children. She married her partner Jon Whitaker in 2005. She works as a physiotherapist.
