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Bryce Dyer's scorecard

King's Cup Gravel Championships

Saturday 24th September, 2022

Within recommended ranges

Just outside recommended ranges

Significantly outside recommended ranges

  • 92g

    Carb per hour
  • 508mg

    Sodium per hour
  • 508ml

    Fluid per hour
  • 1,000mg/L

    Relative sodium concentration
  • 1.18mg/kg

    Caffeine per bodyweight
  • How Bryce hit those numbers

    1 x Serving of Rice
    1 x Chicken Breast
    4 x Salt and Vinegar Rice Cakes
    1 x Malt Loaf
    1 x PF 30 Caffeine Gel
    1L x PF Energy Drink Mix
    1 x PF 90 Gel

    How Bryce's hydration and fueling went...

      • Dr Bryce Dyer is a masters athlete with a self-professed emphasis on versatility and variety, Bryce has won medals in his age group at national championships in six different sports and gone on to compete at age-group world championships in a few of these. He currently competes as a cyclist in time trial, track and offroad events
      • This time around, Bryce was competing in the King’s Cup National Gravel Championships, taking place in Bury St. Edmunds in Suffolk
      • Covering 61.2km in 01:58:52, Bryce came 22nd in his Masters age group, saying that the standard on display was higher than in previous years, resulting in big bunches of riders which changed the dynamics of the race


      • Bryce sensibly pre-loaded with electrolytes to ensure that he would start the race hydrated, with his blood plasma volume fully topped up
      • After a test ride at race pace, Bryce decided that reaching for a bottle on rough terrain wasn’t optimal and so instead used a 1.5L/48oz hydration pack despite the aerodynamic drag associated with this
      • In this pack he had 3 servings of PF Energy Drink Mix which provided him with 1000mg of sodium per full litre (32oz) of fluid to ensure he wasn’t dehydrated during the ride
      • After drinking ⅔ of this, Bryce had an average fluid intake of ~508ml/16oz per hour, with a relative sodium concentration of exactly 1000mg/L. As someone with a Sweat Test score of 1167mg/L, this undoubtedly would have replaced a good proportion of his losses and contributed to him being able to report zero cramping throughout the race


    Quick Carb Calculator Recommendation


    carb 30 mins before


    carb per hour during
      • Ahead of the race, Bryce carb loaded with meals including plenty of rice and an entire malt loaf. This meant that come start time, his glycogen stores were topped up and ready for action
      • In the final 30 minutes he also had a PF 30 Caffeine Gel. This would have increased his blood glucose concentration - which in turn can have a sparing effect on intramuscular glycogen stores, meaning he had more metaphorical ‘fuel in the tank’
      • The 100mg caffeine content of this gel also would have ensured he utilised the associated benefits, including alertness and the muscles’ ability to generate force
      • The main sources of carbs then came in the form of 1L/32oz of PF Energy Drink Mix and one PF 90 Gel. Bryce mentioned that he chose the PF 90 Gel with a bitevalve as they’re ‘so easy to handle at speed and pack for a race’. Although, the timing of his intake could potentially be improved for his next race, as he ‘necked the entire gel’ in one go on lap 2 of 4
      • This meant that he had an average intake of ~92g carb per hour, which is above the general Quick Carb Calculator recommendation of 30-60g/h for an event of this length. However, we do often see pro athletes pushing even higher than 100g/h Carb intake during longer events to maximise performance benefits. It’s likely that Bryce would need to undergo some gut training to reach these numbers while maintaining no GI distress
      • He was happy to report that he didn’t have any energy luls at all, and even had enough for a decent sprint finish at the end


      • Overall, Bryce had a solid day out at the King’s Cup, in which his high carb intake allowed him enough energy to sprint for the line, and appropriate fluid and sodium intakes meant he didn’t suffer from the negative effects associated with dehydration
      • While looking for future events, Bryce is keeping his eyes peeled for something which has a more ‘attritional’ style, in which mental fatigue and his strong nutritional strategy will have more of an impact on the results

    Key info

    Bryce Dyer

    Sweat sodium concentration
    Sweat sodium classification
    * determined by a PH Advanced Sweat Test


    Overall Time

    Event information

    King's Cup Gravel Championships
    Bury St. Edmunds, England
    24th September, 2022
    Total Distance
    61.2km / 38.0mi

    Race conditions

    Weather Conditions
    No Rain
    Min Temp
    16°C / 61°F
    Max Temp
    16°C / 61°F
    Avg Temp
    16°C / 61°F

    Athlete feedback

    Race Satisfaction
    Energy levels
    Stable energy levels with enough in the tank for a decent sprint finish!
    Toilet stops
    GI comfort
    No GI distress at all
    No cramping

    Bryce's Thoughts

     I'd have liked to finish in the top 10 if everything went to plan, and will drop the pack for a bottle in my next race for sure

    Bryce's full stats

     Carbohydrate (g)Sodium (mg)Fluid (ml)Caffeine (mg)Relative sodium concentration (mg/L)
    Total intake1801,0001,0001001,000
    Per hour9250850851

    Data Confidence







    There is good confidence in the accuracy of the data reported. An athlete feels that the numbers closely reflect what they consumed despite a couple of estimations which may carry some degree of error. The majority of what was consumed is recorded to a high level of specificity (most volumes are known through the use of bottles brands quantities flavours). The numbers are very plausible and align with previous data recordings (if an athlete has collected data previously).

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