Harry Jeffery representing Great Britain at the Spartan Kids World Championship in China

Colchester, Essex · Great Britain

Built for
the obstacle.

Harry Jeffery is a 14-year-old British obstacle racer, four-time world champion and Guinness World Record holder.

World champion
European champion
31mGuinness World Record

From one set of monkey bars to the top of the world.

Harry’s journey began at six years old with a simple challenge: make it across the monkey bars. Obstacle racing became the place where his confidence, determination and ability came alive.

Eight years later, he has won world titles in the Bahamas, Costa Rica, Sweden and China—while balancing school, training and life as an ordinary teenager from Colchester.

Read where the journey began
Harry Jeffery on the top step of the Spartan Kids World Championship podium in ChongliChongli, China · 9 August 2026

Latest world title

World champion in the mountains of China.

On a 6.3 km mountain course with 32 obstacles, Harry won the Elite Male 13–14 Spartan Kids World Championship in 46:11—finishing 2:28 ahead of the defending champion.

Winning time
46:11
Winning margin
2:28
Course
6.3 km · 32 obstacles
Watch the full race ↗
Harry exiting a water obstacle
Stay composed
Harry on a technical overhead rig
Move with purpose
Harry preparing a spear throw
Finish the job

The record

Proven on every stage.

Major titles and records, backed by official results and race footage.

2025

European Champion

OCR and Spartan titles

2023–2025

British OCR Champion

Three consecutive national titles

Harry climbing an obstacle wall
Milan · 202431m

Guinness World Record

Greatest distance using hooks in one minute

Watch the record ↗
Great BritainGBR

International Athlete

Racing for Britain around the world

The next chapter

2027: stepping up.

Harry’s next season marks a transition into older and adult competition. The focus is simple: keep developing, race the strongest fields available and represent Great Britain with the same courage that built four world titles.

  • International OCR championship racing
  • Adult Spartan competition
  • Emerging UIPM obstacle opportunities
  • Running speed and technical obstacle development
Join the 2027 journey

More than medals

A young athlete worth believing in.

01

Resilience

Learning to respond when a race, obstacle or training session does not go to plan.

02

Growth

Using sport to build confidence, friendships and a stronger sense of self.

03

Example

Showing young people that an unusual sport can become a place to belong and excel.

The team behind the athlete

Proudly supported by.

Organisations helping Harry train, race and grow within obstacle sport.

Enduo SportsHappy Monkey DrinksAccelerate RunningUKOCRSpartan UKNuclear RacesThe PT BarnWHAOO UKThe OCR ReportACTIPH Water
Harry Jeffery carrying the Great Britain flag in China

Partnerships · Media · Opportunities

Help build what comes next.

Harry’s family is inviting a small number of partners to join his 2027 journey. Support can help with international travel, race entry, specialist training and equipment—while giving partners an authentic connection to an exceptional young British athlete.

All sponsorship and media enquiries are handled by Harry’s parents.