Toril was comparable in size to the planet Earth, with an equatorial circumference of about 25,000 miles (40,000 kilometers). Its polar circumference was slightly smaller, at approximately 24,900 miles (40,100 kilometers).
Toril consisted of various continents and islands, including Faerûn, Kara-Tur, and Zakhara in the central super-continent and, throughout most of its history Anchorome, Maztica, and Katashaka in the western region of the world. There was also one large and very mysterious continent east of Kara-Tur called Osse whose nature and inhabitants were all but unknown.
Following the Spellplague, however, Maztica was sent to Abeir, the sibling world of Toril, and a new continent, Laerakond, appeared in the west. Maztica returned to Toril during the Second Sundering.