The Biathlon challenges athletes with a combination of swimming and running, each tackling distances tailored to their age. Competitors earn points based on their time trial performance in both disciplines. The individual with the highest points emerges victorious, while for the team, it consists of 3 athletes representing the same school.
Congratulations to Izzy K National Champion (Prep 6), Lexie C Silver (Prep 5), Reuben C Bronze (Year 11) and Mr Manning Gold in The teacher's race. Leweston finished with three National Team Champions;
Tilly W, Lucia G, Izzy K (Prep 6)
Izzy W, Esme L, Jessica S, (Year 10)
Josh H, Jay C, Reuben C (Year 11)
Well done to all the talented Leweston athletes and a big thank you to Pentathlon GB and the dedicated officials for organising a successful two-day competition.
Here are the school results:
Boys
| Prep 3 | Prep 6 | Year 7 | Year 9 | Year 11 |
| William M - 66th | Henry M - 18th | Harry D - 21st | Thomas S - 32nd | Reuben C - 3rd |
| Owen T - 61st | Jay C - 6th | |||
| Aidan K - 62nd | Josh H - 9th | |||
| Team 7th | Team Gold |
Girls
| Prep 3 | Prep 4 | Prep 5 | Prep 6 | Year 7 | Year 10 |
| Elena F - 19th | Elizabeth D - 28th | Lexie C - Silver | Izzy K - Gold | Freya D - 17th | Izzy W - 9th |
| Tiggy D - 33rd | Eliza G - 31st | Isadora P - 76th | Lucia G - 31st | Lara P - 31st | Esme L - 13th |
| Willow S - 9th | Tilly W - 52nd | Sadie L - 49th | Jessica S - 20th | ||
| Team 10th | Team Gold | Emily S - 60th | Team Gold | ||
| Team 5th |