IRONMAN 70.3 Weymouth results: Derrett and Weston take overall wins

Chief Correspondent

After a year away, IRONMAN 70.3 Weymouth was back on the schedule today for its fifth edition at the popular seaside destination in Dorset. Even the weather was wonderful.

As with IRONMAN 70.3 Staffordshire earlier in the year, it was an Age-Group only event this year, allowing some of Britain’s best amateur athletes to take the headlines.

Gun-to-tape for Rosie Weston

Rosie Weston, an impressive performer already this year at the Outlaw Half Nottingham and Outlaw Half Holkham, was the quickest swimmer of the day – and never headed – on the way to a significant winning margin of more than 12 minutes. She’ll be using that speed next year, as she moves up to race in the Pro ranks.

“I felt good on the swim, the bike was tough and I started to lag towards the end of the run but the crowds kept me going. When you’re struggling the volunteer and crowd cheers keep you going!”

IRONMAN 70.3 Weymouth 2021 / Rosie Weston
Photo Credit: Getty for The IRONMAN Group

Ecstatic Derrett fights for victory

Men’s winner Stephen Derrett was more than two minutes slower in the water than Alex Woodman (who would go on to finish second), but as they headed out onto the run, there were separated by just seconds. A 1:20:41 run, held off Alex (1:22:27), but the duo maintained their T2 positions to the finish line.

Consistency counted for Derrett. He didn’t set the quickest time split in any of the disciplines, but was still almost two minutes clear at the finish line. A reminder if it’s needed, that triathlon is one sport.

“I’m absolutely ecstatic, I fought so hard. I was in the lead at the start of the run, and I knew there were faster runners behind me, so I really went for it! The bike is my strongest discipline and once I got first place as I arrived at transition of the bike, I wasn’t letting it go!” 


IRONMAN 70.3 Weymouth results 2021

Sunday September 19, 2021
1.9km / 90km / 21.1km (Age-Group only event)


  1. Stephen Derrett – 4:12:47
  2. Alex Woodman – 4:14:43
  3. Alexander Jones – 4:15:51
  4. Felix Wernham – 4:21:11
  5. Toby Fernandez – 4:22:44


  1. Rosie Weston – 4:41:41
  2. Annie Ewing – 4:54:02
  3. Kate MacTear – 4:55:36
  4. Lucy Mapp – 4:58:27
  5. Isabel Davis – 4:58:39
IRONMAN 70.3 Weymouth 2021
Photo Credit: Getty for The IRONMAN Group
John Levison
Written by
John Levison
TRI247's Chief Correspondent, John has been involved in triathlon for well over 30 years, 15 of those writing on these pages, whilst he can also be found commentating for events across the UK.
Latest News
Joe Skipper IRONMAN Lake Placid Results 2023
Joe Skipper steps back up to the plate with Stateside schedule to end 2023 season
Emma Pallant-Browne crosses the line at Challenge Samarkand photo credit Challenge Family
Emma Pallant-Browne now puts health first after tough day out at Challenge Samarkand
Tamara Jewett IRONMAN 703 Michigan 2023 photo credit: IRONMAN
IRONMAN 70.3 Augusta: Preview, start time and how to watch live as Sanders vs Laundry rematch
Emma Lombardi Cassandre Beaugrand WTCS Sunderland 2023 photo credit World Triathlon / Tommy Zaferes
WTCS Pontevedra scenarios: Who needs what to qualify for the Paris 2024 Olympic Games triathlon?
WTCS Cagliari 2023 podium - Alex Yee, Hayden Wilde, Leo Bergere
WTCS Pontevedra start list for Elite Men as Yee chases first world title