Read Paul's brilliant account of what it takes to race the epic Kona Ironman. If you've ever wondered what it's like to race Kona, this is a must read.

I was delighted to get the hell out of freezing Edmonton and to lovely warm Chicago. There were 11 days between racing in Edmonton and then kicking off the grand final of the World Tri series in Chicago.

There are some races that leave an imprint on your mind that you will never forget. Edmonton was one of them. Not because it was a fantastically brilliant result for me and not because I had a bad race. It was just bloody freezing. Like Arctic freezing.

I am 13 years old and raced in the Diamond Tri at Eton Dorney on 6 September. This was my first triathlon after joining Optima in May. It was a sunny day with little wind so I was hoping for a good time.

The National Relays is an institution in the British triathlon calendar. Whilst Optima has been absent for a couple of years, the reinvention of the weekend with different formats (including new Team TT finals on Sunday!) saw us rock up to Nottingham with a total of...

If you'd told me 10 days ago that I would be racing in Edmonton this weekend, I probably wouldn't have believed you. Yet, here I sit, in Chicago airport, munching on a huge salad (USA portion sizes never cease to amaze me) , waiting for my connecting flight to Canada.

51 weeks to go to Rio 2016 - This past weekend I headed to Sweden to race in the Stockholm leg of the World Series and to hopefully collect some valuable Olympic points. The universe had other ideas though.

The Road to Rio - with exactly a year to go, read the first in a weekly blog series from Gill Sanders on her journey to hopefully being on the starting line at the Rio 2016 Olympics.

Season 1, race 6, amongst the rolling hills of the South Downs, the Bewl Water Sprint. A field of 110 men climbed into the resevoir for my first mass start in open water.

The alarm went off at 4:50 Sunday morning in a tent near Worthing as the race kicked off at 6:30. Aim was high tide at 7:15 or so, hence the odd start time. Big swell on the sea meant getting slapped around a bit, but oddly the water was warmer 200m offshore than next to the beach.

See the results from the Optima Aquathlon - July 11 2015.

Optima were out in full force this morning at Thames Turbo Sprint Race Series - Race 3. Luke claimed overall 1st place, with James B, Hollie and Archie all coming first in their categories. Read More...

It’s been a very busy jet setting 2 weeks of travelling & racing for me on back to back weekends and on 2 different continents... Read Gill's Race Report.

SA was Iron-distance start number 8 for me and 3rd year in a row lining up on Hobie Beach – it really is that great a race that it’s worth coming back to... Read Paul's inspiring race report - an insight into what it takes to race an Ironman.

Check out the latest video by Optima sponsor Iffley Road to celebrate the 4 minute mile + other British running icons. View here...