Trident 10k

Trident 10k is a 10km trail run organized by Helensburgh Amateur Athletic Club. Starting at Helensburgh Rugby Club in Helensburgh, Scotland, the loop takes runners through off-road terrain within Loch Lomond and the Trossachs, mixing trail and dirt roads for about 10km with a 381m elevation gain. The course is not flat, but rewards with scenic views across the Clyde, the Arrochar Alps, Loch Lomond and the Trossachs.

On 13 September 2025, the event is limited to 150 participants and features fun prizes, spot prizes, and HAAC homebaking for all entrants. Organised by Helensburgh AAC. Visit the organization's website for the most recent information.