Well, he might discover some unique magical creatures in Canada that are different from those in the UK. Maybe he meets a friendly Canadian wizard who teaches him a special spell.
Maybe he meets an old Canadian witch who has a lot of wisdom about a certain type of magic that is rare in the UK. She could give Harry some valuable advice or a magical item that helps him later at Hogwarts.
Maybe Harry goes to Canada to study magic in a hidden Canadian wizarding school. He could meet new friends and learn about different magical creatures native to Canada, like the Thunderbird.
In this fanfiction, Harry could attend a Canadian wizarding school. He'd have to adapt to a different teaching style and make new friends. The curriculum might include courses on Canadian magical history and spells that are specific to the region. He might also face some challenges from local wizards who are not used to having a famous wizard like him around.
Well, perhaps in 'harry goes to hogwarts later fanfiction', he could form new friendships. He might meet students from different backgrounds or even different magical cultures, which would bring a whole new dynamic to his Hogwarts experience. He could also discover new magical abilities or spells that were previously unknown to him, which would help him in his adventures at Hogwarts.
Yes, there are some out there. You can start by looking on fanfiction websites like Archive of Our Own or FanFiction.net. Just search for 'Harry is a Runemaster before Hogwarts' in their search bars and you'll likely find several stories to choose from.
Well, he might face a whole new set of magical rules and traditions. Canadian magic could be more nature - based perhaps, with a focus on the vast wilderness there. He could make friends with local Canadian wizards and witches who have different accents and ways of doing magic compared to his British friends.
If there was a rivalry before Hogwarts, it could carry over and make their interactions at Hogwarts more tense. However, this could also lead to them pushing each other to be better. For example, in Quidditch, if Fleur is also a good flyer, Harry might strive to outperform her, which could improve his skills as a Seeker. And over time, this rivalry might turn into mutual respect.