High current on PCB to through hole connector
You can keep the tracks wide up as close as you can get, then taper down. If the connector is a single row and there's access i.e. the connector isn't at the edge, you can approach from both directions. and you can also use both sides and via them together further away. If it's more than 2 layers, you can also parallel up the inner layers too, but typically the inner layers won't carry much of the current.