vs 

QUICK ANSWER
"Along" is a preposition which is often translated as "a lo largo de", and "through" is a preposition which is often translated as "por". Learn more about the difference between "along" and "through" below.
along(
uh
-
lang
)
A preposition is a word that indicates the relationship between a noun and another word (e.g., He ran through the door.).
preposition
a. a lo largo de
There is a creek that runs along the northern side of our town.Hay un arroyo que corre a lo largo de la parte norte de nuestro pueblo.
b. por
I'm going to walk along this path until I reach the end.Voy a caminar por este camino hasta que llegue al final.
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a. más adelante
The house you're looking for is along this road to the left.La casa que buscan está más adelante en esta calle a mano izquierda.
a.
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
no direct translation
Feel free to bring your significant others along on the trip.Siéntanse con plena libertad de traer a sus parejas en el viaje.
I invited her for a romantic dinner, and she brought a friend along.La invité a una cena romántica, y se trajo a una amiga.
Copyright © 2025 Dictionary Media Group, Inc.
through(
thru
)
A preposition is a word that indicates the relationship between a noun and another word (e.g., He ran through the door.).
preposition
a. por
Place the thread through the eye of the needle.Pasa el hilo por el ojo de la aguja.
b. a través de
The old mansion was just visible through the mist.La vieja mansión era apenas visible a través de la niebla.
a. a través de
I got my job through a friend of a friend.Conseguí el trabajo a través de un amigo de un amigo.
a. durante
The supermarket will be selling pumpkins all through the season.El supermercado venderá calabazas durante toda la temporada.
a. hasta...inclusive
The store will be open Wednesday through Sunday.La tienda estará abierta desde el miércoles hasta el domingo inclusive.
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a.
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
no direct translation
Proceed through the intersection and take your first left.Pasa el cruce y toma la primera a la izquierda.
The dam stops the water from flowing through.La presa impide el paso del agua.
a. de principio a fin
I read the book through.Me leí el libro de principio a fin.
a. completamente
The laundry is dried through.La colada está completamente seca.
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. terminado
Are you through with your homework yet?¿Ya terminaste los deberes?
Copyright © 2025 Dictionary Media Group, Inc.