The largest coke you can order at McDonald's in the US is 380 calories (100g sugar) (not sure what size because it's not obvious from their website).
The largest coke you can order at McDonald's in Portugal (where I happen to be) is 197 calories (49g sugar).
- https://www.mcdonalds.com/us/en-us/product/coca-cola-large.h...
- https://www.mcdonalds.pt/produtos/mcmenu/bebidas/coca-cola-5...