Here are a few athlete testimonials from our 1-2-1 coaching.
FRANCISC
Long Distance Triathlete
"5 years and still going, in that time I have progressed on all fronts. This year I took on my first full distance IRONMAN in Copenhagen. The planning of training around my work/life and adjustments meant I was able to stand on the start line fit and healthy and execute a race way beyond what I thought was achievable.."
RUSSELL
Long Distance Triathlete
"We have worked together for 12 months. The big goal for 2024 was performing in Hawaii for the IRONMAN World Champs. The experience and attention to detail on the specifics of the race were amazing!! I have improved across swim/bike & Run, I have also got alot stronger in the gym with some specific focus. I can't wait to get stuck into 2025 and beyond"
KATIE
Runner & Triathlete
"In 2021 I worked with Optimal Endurance to complete a full distance IRONMAN in Tallin. The training was focused on the specific event, I had a clear plan on race day and I finished in 10hr 53mins!! I enjoyed the process of translating my running background to triathlon training. If you want to improve across Swim/Bike/Run this is the team for you. Thank you"
MAGDA
Triathlete
"I had an amazing experience at the Mallorca Triathlon Camp 2026! Everything was very well organised from start to finish, which made it easy to FOCUS fully on training and recovery - SPA included! "
ARCHIE
Runner
"OE and my coach Jack Rees are AMAZING! I have been working with them for about 18 months now and in that time I have achieved things that I would never have thought to be possible beforehand."
JOSHUA
Runner & Triathlete
"I have been coached by coach Finn for over 2 years now and have seen an improvement in performance within a range of events from the 1,500m up to Half-marathon, as well as solid preparation for my first 70.3 triathlon."
MAX
Triathlete & Runner
"Outstanding Mallorca Triathlon Training camp with some great people. Hats off to the coaches Ross, Brett, Finn & Simon for putting on such a quality week - can’t recommend enough!"
KATE
Runner
"NYC Marathon with Paulina and OE. It was my first marathon and notoriously a tough course. I had only run two halves before, and wasn’t sure if full coaching was right for a near ‘beginner’. But the whole experience was brilliant"
JACK
Runner & Triathlete
"I’ve been a member of the OE club since 2025. The structured weekly sessions, coach input, and supportive community have made a big difference to my motivation and consistency — particularly the Tuesday rides.'
MIKE
Channel Swimmer
"We worked together in 2020 and 2021 in my build up to swimming the channel successfully in Aug 2022. A unique goal that Ross has helped with from setting my training to coming on the support boat."
AMY
Long Distance Triathlete
"Ross has coached me for over 5 years to run my fastest 10k, half, marathon (2:58), 70.3 and full distance (10hrs 28mins). Any goal I have my training leads me to surpass my expectations"
DOM
Runner & Triathlete
"Ross and I have largely been working together to improve my marathon time particularly for London, but I've also PB'd in the 10k and half marathon too. Training is varied and specific to me"