©2016 by SISU Racing.

SISU Racing

Professional Coaching

Competing at two world champs this year, and becoming competitive for many reasons in such a short span of time (12 months) would not have been possible without your patience, skill, and encouragement.


You really did work wonders, and with a rather limited time frame and limited contact.You pushed me, taught me new things, taught me to achieve things I didn’t think were possible And that’s what a great coach does.  


They teach people to believe in themselves and push them every step of the way until they reach what they never thought was possible.

About SISU

Passion. Persistence. Perseverance.

A short list of Duncan's Experience & Qualifications


He has completed 13 IRONMAN races, 3 at Kona World Championships

Numerous 70.3 IRONMAN'S

Is an IRONMAN Certified Coach

Open Water Swim Coach for Hercules Events

Training Peaks Certified Coach and Ambassador

Expert published contributor to "Time Outdoors" & "Mens Health"

Head Performance Coach at Berkhamsted Cycling club

Featured in "Triathlon Daily' newscast and "Runchat"

Twice completed the Marathon Des Sable's, recognised as the toughest foot race on the planet

Diploma in Personal Training and Nutrition

Numerous Ultras incld UTSW twice

Swum competitively at club, county and regional level

Coached swimming at club level for over 7 years, all ranges and abilities including Masters, County and Regionals

ASA Level qualified teacher & T.I (Total Immersion) qualified

Safe guarding children certified

National Rescue Award & Teachers Life Saving certified 

Twice finished Tough Guy, the toughest obstacle race in the world;


Say hello using the form below

If you want to get in touch or have any questions for me, please contact me using the form below.