Can't speak for Cal International, but for us, the cost of producing events is up tremendously post-covid. 2019, we were getting billed $40-$70/hour for cops and fire department EMTs, mostly in the $45-$55/hour range. Now we're at $89/hour for both in the municipality where we produce most of our races. Our local parks department bill used to be around $4750, this year we're going to be over $9000. Portos, the rate went up from around $70/unit to $110/unit (we switched companies and got it down a little). Shirts and medals, the cost hasn't changed that much.
On the plus side, we're finding that our sponsors are willing to bump up their support at least a little bit in most cases. Example, the presenting sponsor for our spring half marathon was willing to bump up by 25% (not a huge dollar sponsor but a super nice gesture). For our biggest race I can think of 4 sponsors that bumped up this year, so we're up about $15k which is a nice offset for the municipal cost increases. We have lost a few sponsors and we're having to hustle big time to try to find alternatives.