The Lamanites were pursued (apparently northward) “from city to city by Moroni until they were met by Lehi and Teancum” (Alma 62:32). There are possibly only two previously mentioned cities that could fit these “cities” referred to: the city of Morianton and the city of Omner. Lehi and Teancum (last located in the city of Bountiful) were left in charge after Moroni had taken the city of Gid and was preparing to attack the city of Morianton (Alma 55:33 & 62:1-3).
One might wonder why the Lamanites fled in a northerly direction? According to John Sorenson, perhaps Moroni had correlated in advance with Lehi and Teancum to start attacking from the north (at Omner or Morianton). (Source Book, p. 284) If because of Lehi and Teancum’s attack from the north, Lamanite troops were already moving north to increase their defensive strength in the cities of Morianton and Omner, that would have left a weakened Lamanite force in the city of Lehi, and thus the Lamanites might have thought to flee north so that they could join forces with the rest of the Lamanite army. [Alan C. Miner, Personal Notes]