Amos Kipruto won the first Gothenburg lap since 2019, after a jerk with a few kilometers left.
With the new bridge, slightly lower, the bridge over the Göta River, the course record (59.36) was in danger.
The change was estimated in advance to make about 10 seconds difference for the elite runners and up to half a minute for the exercisers.
But it did not go really fast in the slightly semi-chilly weather with sometimes fairly persistent rain.
Instead, the Kenyan, who took the World Cup bronze in marathon three years ago, ran in at 1.00.50.
Swedish-Eritrean Hässelby runner Samuel Russom, who only a week ago was during the Swedish record time in a marathon, ran in as tenth on 1.02.28.
On the women's side, the Ethiopian Tigist Assefa won with a time of 1.08.20.
The best Swede was Hanna Lindholm in tenth place with a time of 1.13.19.
Just over 44,000 runners were registered, even though the organizers already expected a relatively large drop-out in advance as many of the start registrations have been moved forward from the canceled races during the pandemic.