Establish if the event organisers have laid on feeding stations and blood glucose testing facilities. If not, you may need to equip friends and relatives with provisions and place them at strategic/accessible points.
Eat plenty of starchy carbohydrate foods the day before the event.
Towards the end of the event or just after you finish, your blood glucose level may start to rise and you may need to take a small dose of fast-acting insulin to counteract this. You should discuss how to make insulin adjustments with your diabetes care team before the event.
Take particular care if the event is at a different time of day to your normal training cycle. Your insulin requirements may vary considerably. It is best to spend at least two weeks training at the same time as the proposed event to highlight any differences.
Follow the event organiser’s instructions regarding medical conditions. For example, record details of your treatment with the event organisers or wear identification jewellery. Ensure that an official knows about your diabetes. It could save your life.