To celebrate 30 years of the championship, special veteran teams will also participate this year.
The OA Inter-Services Triathlon sees some of the best athletes from across the Armed Forces push themselves to the limit in individual and team categories. Competitors will swim through 1.5 km of open water, cycle 41 km of tricky terrain and finish the course with a 10 km run. The Fire, Police and Prison services are also entering guest teams.
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