what is the verb ending for the following verbos:

llevar
ganar
caminar
montar

2 answers

Those are the infinitives of verbs.
llevar = to carry, etc.

The verb ending of the infinitives is -ar in each case.

The verb ending that actually gets used in a sentence depends upon the tense and the subject of the verb. That is what verb conjugation is all about.
Now, if you mean "what are the verb endings" when the infinitive is conjugated:
o, as, a, amos, ais, an

yo llevo
tú llevas
él/ella/usted lleva
nosotros/nosotras llevamos
vosotros/vosotras llevais
ellos/ellas/ustedes llevan

Sra