I ran this in 2016 as part of a final challenge and my first attempt at running 2 in a week. Stockholm expo is not really anything there apart from ASIC's as they sponsor it.
The race itself is run on a Saturday and starts at 2 in the afternoon, the course follows almost 2 laps of the city centre, and although am not a fan of laps I really enjoyed this race, lots of fuel stations every 3 km, including amongst other pickled gherkins at mile 14. As it is mostly around Stockholm it is pretty well supported and as i wasn't bothered about time so just enjoyed it ....although its a bit mre undulating than I would have thought, possibly why I should check the map route a bit closer when signing up for races. Would definitely recommend this one