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What is CALCO?

CALCO athletics is London based track and field group directed by head coaches Clarence Callender and Lloyd Cowan. Having both successfully been involved in athletics for over thirty years, the vision of combining their knowledge and expertise was inevitable. We have a range of athletes from a range of countries competing at both national and international level.

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Gabriella Ade-onojobi
Gabriella
Amber Anning
Amber
Ethan Brown
Ethan
Olive Coles
Olive
Dwayne Cowan
Dwayne
Pippa Earley
Pippa
Jahmal Germain
Jahmal
Tremayne Gilling
Tremayne
Mary Iheke
Mary
Aleasha Kiddle
Aleasha
Confidence Lawson
Confidence
Ben Lloyd
Ben
Victoria Ohuroghu
Victoria
Brahian Peña
Brahian
Simba Rwambiwa
Simba
Thomas Semaan
Thomas
Jimmy Thoronka
Jimmy
Diani Walker
Diani
Conrad Williams
Conrad
Alex Wilson
Alex
Andre Wright
Andre
Gabriella Ade-onojobi

Gabriella Ade-onojobi

Gender
Female
Age Group
Senior
Event
100 meter hurdles
Country
Great Britian
Achievements
NCAA Conference Champion
Amber Anning

Amber Anning

Gender
Female
Age Group
U20
Event
200/400 meters
Country
Great Britian
Achievements
Commonwealth youth games bronze medalist
Ethan Brown

Ethan Brown

Gender
Male
Age Group
U20
Event
400 meters
Country
Great Britian
Achievements
National and International Schools Champion
Olive Coles

Olive Coles

Gender
Female
Age Group
U20
Event
400 meters hurdles
Country
Great Britian
Achievements
SEAA Medalist and multiple English schools finalist
Dwayne Cowan

Dwayne Cowan

Gender
Male
Age Group
Senior
Event
400 meters
Country
Great Britian
Achievements
World Medallist
Pippa Earley

Pippa Earley

Gender
Female
Age Group
U20
Event
Heptathlon
Country
Great Britian
Achievements
80 meters hurdles British record holder & 4th place at Commonwealth youth games
Jahmal Germain

Jahmal Germain

Gender
Male
Age Group
Senior
Event
Decathlon
Country
Great Britian
Achievements
UK top 5 ranking
Tremayne Gilling

Tremayne Gilling

Gender
Male
Age Group
Senior
Event
100 meters
Country
Great Britian
Achievements
Mary Iheke

Mary Iheke

Gender
Female
Age Group
Senior
Event
400 meters
Country
Great Britian
Achievements
European Silver Medalist
Aleasha Kiddle

Aleasha Kiddle

Gender
Female
Age Group
Senior
Event
100/200 meters
Country
Great Britian
Achievements
England Representative
Confidence Lawson

Confidence Lawson

Gender
Male
Age Group
Senior
Event
100/200 meters
Country
Great Britian
Achievements
Ben Lloyd

Ben Lloyd

Gender
Male
Age Group
U20
Event
400 meter hurdles
Country
Great Britian
Achievements
English and International schools champion
Victoria Ohuroghu

Victoria Ohuroghu

Gender
Female
Age Group
Senior
Event
Country
Great Britian
Achievements
Brahian Peña

Brahian Peña

Gender
Male
Age Group
Senior
Event
100 meters hurdles
Country
Switzerland
Achievements
Switzerland Number 1
Simba Rwambiwa

Simba Rwambiwa

Gender
Male
Age Group
Senior
Event
400 meters
Country
Great Britian
Achievements
Thomas Semaan

Thomas Semaan

Gender
Male
Age Group
Senior
Event
400 meters
Country
Lebanon
Achievements
Jimmy Thoronka

Jimmy Thoronka

Gender
Male
Age Group
Senior
Event
100/200 meters
Country
Sierra Leone
Achievements
Commonwealth Games selection
Diani Walker

Diani Walker

Gender
Female
Age Group
Senior
Event
100/200 meters
Country
Great Britain
Achievements
European U23 selection
Conrad Williams

Conrad Williams

Gender
Male
Age Group
Senior
Event
400 meters
Country
Great Britain
Achievements
World, Commonwealth and European Medallist
Alex Wilson

Alex Wilson

Gender
Male
Age Group
Senior
Event
100/200 meters
Country
Switzerland
Achievements
Switzerland 100m and 200m record holder
Andre Wright

Andre Wright

Gender
Male
Age Group
Senior
Event
400 meters
Country
Great Britain
Achievements
British Universities Champion
Clarence Callender
Clarence
Lloyd Cowan
Lloyd
Clarence Callender

Clarence Callender

Clarence Callender is a former British sprinter. Clarence won Gold in the 4x100m relay at the 1990 Commonwealth games alongside Linford Christie, Marcus Adam and John Regis. This was an addition to his silver medal at the Seoul 1988 Olympic Games in the equivalent event. After much success he began to start coaching whilst simultaneously serving in the military, which in turn lead him to being appointed sprints coach for Kuwait’s Olympic team in Athens. He continues to give back to the sport by not only coaching but also mentoring athletes.

Coach Callender is keen on getting coaches to work together for the future of the sport - “Be comfortable with the uncomfortable”
Lloyd Cowan

Lloyd Cowan

Lloyd Cowan is a former British athlete who specialised in the hurdles. Having been selected for the 1984 Los Angeles Olympic Games and Commonwealth Games he has experience at all levels. After his career he went into coaching and has coached many plausible athletes. Including the likes of Olympic, World and Commonwealth 400m gold medallist Christine Ohuruogu and Andy Turner who also achieved gold medals at the European Championships and Commonwealth games. As a result of his achievements, in 2015 he was made an MBE.

Coach Cowan is especially dedicated to developing athletes to reach their full potential. - “Winners get up and do it; losers make excuses and stay in bed.”
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General Enquires
Phone Number
    
    
      
    Andy Turner
    

Andy

      

I came to Lloyd with a personal best of 14.5 and retired a 13.2 athlete with commonwealth and European gold medals and a world bronze. Lloyd knew how to get the best out of me at the right times and adapted training if and when I wasn’t 100% which made for a great partnership. A one of a kind coach who I owe my career to.
Andy Turner is a retired track and field athlete who specialised in the 110mH. Coached by Lloyd Cowan he improved steadily.
Andy competed in the 2004 Athens Olympics, was third at the 2006 Melbourne Commonwealth Games, Achieved a bronze medal at the 2006 European athletics championships and finished fourth at the 2007 European Indoor Athletics Championships. In 2008 he was then selected to represent Great Britain at his second Olympic Games.
His 2010 season was very successful as he was not only crowned the European Champion but was also the Commonwealth Champion. In addition to this stellar season he broke the world record for the 200m hurdles. The following year he went on to win a bronze medal at the 2011 World Championships and competed at the 2012 Olympic Games on home soil.
In 2013 all his hard work and dedication to the sport earned him a bronze medal at the World Championships.

    James Alaka
    

James

      

I met Coach Callender a month after my seventeenth birthday. At that time, he was exactly what I needed in my bourgeoning athletics career. Clarence introduced me to a new way of thinking; a positive way of thinking that quickly filtered down into my performances on the track. In our first year working together, he instilled in me lessons and skills that guided me to significant improvement on my times and a place on the GB junior’s team.
More than just supplying me with the tools to be great while competing, Coach always supported me in my personal life and stressed the importance of education. Outside of my parents, he was a reassuring source of support when I decided to attend University in the United States in 2010. Rather than leave me ostracised, he continued to help me with any questions that I had while overseas, and when I returned to England each summer, he implanted more seeds of wisdom and track knowledge in me, which in turn meant my further development. His tutelage culminated in a European U23 gold medal, three Pac 12 Sprint titles and numerous call ups to compete for my country.
We achieved a lot before injuries and personal problems stopped me from competing or training from December 2013 through September 2014. When I decided I was ready to return, Coach welcomed me with open arms and revealed that he had started working with Lloyd Cowan. Whilst I had known Lloyd by proxy of his friendship with Clarence, I was not too familiar with his training style. What was surprising about this new partnership is the attention to detail and patience that Coach Cowan and Coach Callender displayed while dealing with me. I was bereft of confidence, but Lloyd and Clarence showed a belief in me that was unwavering, and their pearls of wisdom started to take effect on me, slowly but surely.
The 2015 season was one of extreme learning, but after that year I was a new man. In 2016, they guided me to my second fastest 200m time ever (which was also a qualifying standard for the European championships that year) and my fastest ever 100m time in all conditions.
Clarence and Lloyd are track historians, who take great pride in their knowledge of the sport. They not only are world class coaches, but they are world class men. Both being fathers, their paternal instinct is one that is evident when they are moulding their athletes and the continued and consistent success of their athletes is proof of their abilities. Not only did they help me achieve goals that I didn’t seem feasible on the track, they helped prepare me for life as an adult black man.