Thanks heaps for helping guys!
I am soooo excited!
I just found this list of mentioned places in G4, that I don't think made it on the Walmart map. It's from the mlp FIM wikia
**oops, just saw most of these are on the map**
......
Mentioned regions
HoofingtonHoofington is a village mentioned by Trixie as the site of her alleged battle with an ursa; her story implies the town is near the Everfree Forest. The suffix -ington is derived from old English for "town". The name is quite similar to that of a political news website, The Huffington Post.
FillydelphiaFillydelphia is briefly mentioned by Princess Celestia in the episode Swarm of the Century. As an excuse for cancelling her visit to Ponyville, the Princess says she has to go to Fillydelphia in order to deal with an infestation of "incredibly bothersome creatures", presumably parasprites. It is mentioned again in A Friend in Deed as Cranky Doodle Donkey's previous residence. In It's About Time, it is mentioned when Rainbow Dash gives the report that nothing dangerous is coming from Fillydelphia all the way to Las Pegasus. In Hurricane Fluttershy, Rainbow Dash mentions that Fillydelphia broke the tornado wind speed record with a top speed of 910 wingpower. It is also mentioned in Games Ponies Play. Lauren Faust, the show's creator, mentioned in a comment on deviantArt that she wanted to name the main setting of the show Fillydelphia after Philadelphia where her family resides, but ultimately went with Ponyville.
TrottinghamTrottingham is mentioned in Stare Master, where Rarity is making 20 gold-lined gowns for ponies there, and later mentioned in Luna Eclipsed as Pipsqueak's previous residence. It is probably a portmanteau of 'Nottingham', an English city, and 'trot', a jogging speed for horses.
Las PegasusLas Pegasus is mentioned in It's About Time. It is referenced when Rainbow Dash gives the report that nothing dangerous is coming from Fillydelphia all the way to Las Pegasus. The name is a play on Las Vegas according to the episode's writer M.A. Larson.[3] In the original version of the map, it was spelled "Los Pegasus", with an "Applewood" sign placed next to it, which implied a Los Angeles / Hollywood reference.
TartarusTartarus is a place mentioned in It's About Time. It's a place where evil creatures are held prisoner and guarded by the three-headed dog, Cerberus. Tartarus is from Greek mythology, being a deep dark pit below the underworld where many of the damned are imprisoned.
BaltimareBaltimare is a city mentioned in It's About Time. It is referenced when Rainbow Dash gave a mini-report that a pegasus just came back from there, and there was no danger. The name is a play on the real life city called Baltimore.
Saddle ArabiaMentioned in the episode Magic Duel, Princess Celestia arrives to Ponyville with two representatives from the region. The name is a play on the real life desert region kingdom of Saudi Arabia.
Hollow ShadesMentioned in the episode Apple Family Reunion by Apple Bloom while she is rattling off town names. Not much else is known about the destination.
Galloping GorgeMentioned in the episode Apple Family Reunion by Apple Bloom while she is rattling off town names. Not much else is known about the destination.
Foal MountainMentioned in the episode Apple Family Reunion by Apple Bloom while she is rattling off town names.
Tall TaleMentioned in the episode Apple Family Reunion by Apple Bloom while she is rattling off town names. Not much else is known about the town.
MustangiaMentioned in the episode Games Ponies Play by Ms. Peachbottom. In the episode, she tells Shining Armor that she is "just an ordinary wild mustang from Mustangia".
Also, from the new sea pony book -
"The underwater city of
Aquastria, ruled by Princess Celestia's sea lion cousin King Leo, appears in the picture book My Little Pony: Under the Sparkling Sea. It is an underwater city populated by seaponies and mermares, as well as other sentient sea creatures; in the book, the main characters visit the kingdom. The seaponies are referred to as "cousins" of the land-based ponies."