Think it is called Swear Hill.
Took it to avoid the funny traffic lights west of Peebles.
Coming in from the Kailzie Back road (Arthur Johnstone still being pursued by placard there and big shire horse went for chap on bianchi in front of us) take left turn before the tweed. Follow the road and take the right turn (the other road up the hill is dead end) many signs then suggest the road is closed. Certainly to cars yes but not walkers or horses. Rarely I think cyclists? Goes up steeply for some distance then descends with Road narrowing. There is a huge speed bump at bottom and a tree over one side Of the road. Turn right and cross tweed over lovely bridge at @amir’s kirkton manor road and head back up to the main road