After finishing the gym in Goldenrod then you can buy it in any Poke'Mart...I think..hehe
You can buy escape ropes in cerulean city poke mart.
Of course, SILLY!
there are only 1 - 5 escape ropes
From a Pokemart in Slateport. And also from the big shopping center in Lilycove.
About every Pokemon Center has Escape Ropes, except for Cherrygrove City.
Yes you can, from a Pokemart in Slateport. And also from the big shopping center in Lilycove. - Badminton
3-one at each overhead escape hatch
Just go the way you got in to get out.
Ebay
activate all items
An escape rope is used in a cave or dungeon, such as Victory Road, that brings you back to the cave's entrance. It's similar to the move Dig. (Note: In Pokémon DPPt, you CANNOT use an Escape Rope in Turnback Cave.
You can buy workout ropes at the following sites www.ebay.com/ or www.amazon.com/ or at craiglist.com/. Or you could get them at Wal-Mart or best buy or sears or on this site I am including www.treadclimber.ca/