noun, adjective - Double crossing or two-way crossing is a solo open water swim or a relay that continues two consecutive legs across a channel, lake, river or other open body of water. Traditionally, there can be up to a ten-minute break at the shoreline between the first and second crossing.
The swimmer set the record for a double crossing in the Catalina Channel.
The relay negative split its double crossing of the English Channel, swimming one hour faster in the second crossing than the first.
She was planning on a double-crossing of the Strait of Gibraltar.