I just did a trip Montreal - Toronto and back.
We're spoiled for choice of fast chargers on this route. I could have broken up the trip several ways.
I started with a 100% charge on my Genesis GV60 Performance. Going at realistic highway speeds, I would only get 340km from a full charge. I stopped at about 300km from home at a bank of fast chargers. In Montreal, the most convenient fast charger is 180kW - the one on my trip was 350 kW. It was my first time using such a beast.
Fortunately, the Kia-Hyundai-Genesis eGMP platform cars are among the fastest charging. from 14% to 84% took about 23 minutes. From 80% to 83% took about 6-7 minutes, so the advertised max charging rate of 10% to 80% in 18 minutes was accurate. In future I would use anything 150kW or above as the extra expense is not worth the small increase in charging time.
I made it all the way to Toronto, but decided to charge in a suburb anyway.
On the way back, I also made two stops. Again, the second one was not necessary, but I wanted to have about 125km range for when I got back.
The hotel I was staying at charged my car to 100% each night, and we were able to go to Niagara Falls and back to downtown Toronto, as well as an airport round trip to pick up some family members arriving from the UK. Overall, charging would have cost me CAD$150 for close to 950 miles. It cost less really, as the hotel charging was included in the parking price. This is with expensive public charging in Ontario - Quebec is cheaper, and the chargers are more likely to work.
On my return leg, the first charger I tried kept stopping after 1-3 minutes - frustrating!