The poem is narrated by a speaker who is directly experiencing the events of the poem and reflecting on them. We know this because of the use of the first-person pronoun "I" throughout the poem. For example, the poem begins with "Two roads diverged in a yellow wood," indicating that the speaker is the one who encounters the two roads.
While the poem is told from the speaker's perspective, it's important to note that the tone of the poem is quite reflective and philosophical. The speaker is not simply recounting the events of a journey; they are also reflecting on the choices they have made and the implications of those choices. This creates a sense of distance between the speaker and the events, even though the poem is told from a first-person perspective.