His relics are kept in Nidarosdomen in Trondheim, but I don't think you'd actually be able to venerate them.
In Finland Finnish National Board of Antiques and Catholics have argued about who has the right to own the relics of Henry of Finland i.e. the national RC saint of Finland. Hasn't there been anything like that in Norway? St. Olaf must be quite quite important to Catholics in Norway so I'm suprised if they haven't demanded some kind of right to venerate the relics.
He is also important for the Norwegian state, which under the articles of the 1814 Constitution still in force (and still in Danish) the King must profess, defend and govern the Lutheran church, to which over half of the cabinet must belong, and the constitution obligates Lutherans to raise their children in it. The Norwegian Law of Succession, adopted in 1163, decreed that future kings of Norway should not be considered kings in their own right, but rather as vassals governing in the absence of Saint Olaf. Given all that, the authorities might be uneasy about St. Olav's non-Lutheran Faith being brought up via veneration. When I asked about the relics (I said the grave) when I was in Trondheim in '87, I was told that they were reburied when the silver reliquery was melted down when the Reformation was imposed (unlike Sweden and Denmark, not a popular movement).
Btw, Nidarosdomen must be one of the most beautiful churches I've ever seen.
Yes. May it become a site of pilgrimage again!
And the town isn't bad either.
I had a chat with an Orthodox deacon in Oslo a couple weeks ago, and was surprised to learn that St. Olav's father was actually catechised in Constantinople and, after his baptism in England, was stationed in Kiev where he possibly played a part (albeit a very small one) in the Christianisation of the Slavs. I was also told that Ss. Theodore and John (983), the first saints to be added to the Russian Church calendar, were of either Norwegian or Swedish origin.
I'd love to read more about St. Olav so if you could point out any information about him I'd be grateful.
Somewhere here I posted a bunch of stuff, IIRC there was a Church of St. Olav in Novgorod.