| when | where | what | contact | details | notes |
| Sunday 16th May |
Vale of Leven Pool, Balloch | Lomond Kids Triathlon | results | ||
| Saturday 17th July |
Balloch Park | Balloch Highland Games Triathlon | results 2003 | results pictures |
|
| Sunday 22nd August |
Helensburgh Swimming Pool | Helensburgh Sprint Triathlon |
form | results 2003 | |
| Helensburgh Junior Aquathlon |
form | results 2003 | |||
| Sunday 5th September | Loch Lomond at Balloch |
Loch Lomond Standard Challenge incorporating the National Fire Service Championships |
info or form |
entries results 2003 |