Route 755 will take you from Ballaoma straight to Grandstand. It's another grassy area so you'll be able to catch some Pokemon here easily. The weather is always clear so don't be afraid to let out your Pokemon for some fresh air! You can get most of the Pokemon here ranging from Ralts, to Magnemite, Rattata, Pachirisu, Pichu, Plusle, Minun, and Abra. But keep your eyes open. You may run into the darling Togepi if you're lucky.
Good luck, Pokemon Trainers.
Pokemon:
Ralts
Togepi
Magnemite
Rattata
Parchisu
Pichu
Plusle
Minun
Abra