ända in i kaklet

Literally, "all the way into the tiling". Originally with reference to competitive swimmers and the tiling-clad walls of pools.

ända in i kaklet

1. (idiomatic) all the way to the end (often in a positive sense)

   Laget kämpade ända in i kaklet, och kammade hem segern med en hårsmån

   The team fought all the way to the end, and won by a hair's breadth

• kakel in Svensk ordbok (SO)
• Svensson, Anders (24 November 2010), "Flytande simjargong – alla ska in i kaklet" (in Swedish), Språktidningen