Join us for the Trident Grantham Triathlon on May 5, 2025—a classic sprint triathlon with a fresh new energy and bringing the triathlon scene back to Lincolnshire! This event marks the exciting re-launch of a beloved Grantham tradition, formerly hosted by SBR Events, now brought to life with Trident Sports Events’ signature organization and passion. The course remains as thrilling and picturesque as ever, offering athletes a pool-based swim, a scenic bike ride, and a fast-paced run—all set against the beautiful backdrop of Grantham.

Perfect for athletes of all levels, the Trident Grantham Triathlon promises a smooth, well-organized experience that is ideal for first-time competitors. Every competitor will enjoy a fully supported race with aid stations, on-course marshals, and of course one of our signature medals to commemorate the achievement. Be part of the excitement, test your limits, and experience a revitalized event that brings the best of Grantham’s triathlon history into 2025 and beyond!