• Claire and her husband Piers came 16th out of the mixed teams competing at the Otillo Swimrun World Champs. Coming back from a few operations, Claire had an excellent performance to finish the race in 10 hours and 6 minutes
• Surpassing her expectations, she rated her race satisfaction as 9/10. She hit good intake numbers over the course of the race despite the lack of opportunity to eat/drink when swimming and manoeuvring across technical rock sections

Hydration

• Claire consumed ~277ml/hr (~9oz/hr) fluid. We do not know Claire’s sweat rate so it is hard to tell if she was consuming an adequate amount of fluid
• Claire’s fluid consumption was however on the lower side compared to what we usually see in races of this length. The conditions were cool but a higher fluid intake would most likely be ideal to replace a greater proportion of fluids lost
• Claire consumed ~602mg of sodium per hour, through the use of PH Electrolyte Capsules and PH 1500. It is hard to determine how well this will have replaced her losses because she hasn’t had an advanced sweat test
• Considering her low fluid intake the relative sodium concentration she consumed was a very high ~2,172mg/L. Again because we are unaware of Claire’s sweat sodium concentration and sweat rate it is hard to determine how optimal this is but it does seem very high. Increasing fluid consumption would have diluted this concentration and brought it more inline with what we would expect to see

Fueling

Conclusions

• Claire had a strong performance at the ÖTILLÖ Swimrun World Championships in September. Racing for just over 10 hours she mixed up her strategy well by eating a range of the available on course snacks to avoid flavour fatigue
• We hope to see Claire completing the race again next year as we would love to see her reaching her new aim of going under 10 hours!