Duncan Grainge   SISU Racing

We Train individuals & athletes of all abilities. We believe in a collaborative athlete centric coaching style, where the athlete and coach work closely together to determine the training plan, goals, frequency and methods of communication. As experts in kinematics we strive to optimise the athletes movement economy which will in turn optimise your performance on the day, whether that be an Tri,10k, multi day sportive or even an IRONMAN or Ultra. #sisu #sisuracing #sisutri


"You love racing, we love coaching and we are passionate about helping athletes from Beginner to Elite"

Duncan's love is helping his clients achieve their dreams in triathlon and other endurance sports through training plans, coaching, consulting and education.

As an athlete, Duncan has successfully completed 13 IRONMAN distance races including 3 at the IRONMAN Hawaii World Championship. He has completed the Marathon Des Sables twice and numerous other Ultra's.

Duncan’s certifications and training include:

* IRONMAN Certified Coach
* ASA Certified Coach
* TI Certified Coach
* Diploma in Nutrition

"My approach to coaching has always been about education and sharing. By sharing our idea's, best knowledge, we can all raise the level of performance the athletes can benefit from."

We offer personalised training plans for a specific race you want to complete. This maybe for say a 10k or perhaps a multiday/stage race ultra like the Marathon Des Sables or preparing for your first or even 10th IRONMAN / IRONMAN 70.3 where you may be looking to qualify for the World Championships.


United Kingdom

Preferred Athlete Levels

Beginner, Intermediate, Advanced, Professional


1-on-1 Coaching, Consultations, Group Coaching, Local Coaching, Remote Coaching, Strength Training, Nutrition, Mental Skills, Bike Fit, Run Analysis, Swim Analysis, Biochemical Analysis

Sport Types

Triathlon, Road Cycling, Running, Mountain Biking, Cyclocross, Duathlon, IRONMAN, XTERRA, Swimming, Personal Training, Adventure Racing




United Kingdom