There may also be additional rewards, e.g. Trophies, necklaces, etc.
What is the lead-time for the manufacturer?
Can you get a “Proof”, to ensure that everything is spelled properly?
In order to determine the number of medals you need, you need to:
Set the events list
Set the age groups for each event
Determine which events get “Expert” medals
Is there any space on the award for putting a label, to identify who won it, and what their result was? (e.g. “Robin Dunlop – 10k Unlimited – 28:22 – 3rd Place”)
Do you have the labels necessary to print on for the awards?