glide across (something)
To move across a surface or area in a very smooth manner, similar to floating. Those ballroom dancers are very talented—they just seem to glide across the dance floor!
glide away (from someone or something)
To move across a surface or area in a very smooth manner, similar to floating. The swans glided away from us as we got closer to the water's edge.
glide across something
to float or slide across something. The skaters glided across the frozen expanse of the river. The small plane glided across the sky.
glide away (from someone or something)
to slide or float away from someone or something. The skaters glided away from the center of the rink. The canoes glided away from the judge who had started off the canoe race.