I ran a similar century on 38 mm Gravel King slicks, tubeless. A few weeks later I did a short Gravel Grinder on them, but I did lower the pressure. They worked fine on both rides. Right now I am running a 38 mm slick in the back and a 38 mm Gravel King SK up front. Great setup for south Florida gravel and I would have no issue using them on extended pavement rides.