Quite a distance from the start to the end of this short riddle. Who am I?

Eight furlongs fall between my twin ends.
Remembering fond days or greeting good friends,
All those who see me suspect that they please.
To summon me, several folks need to say cheese.

I've enjoyed reading riddles on this site, and thought I'd try writing one. Who is the speaker of this poem?

Answer

I think it's

smiles

Eight furlongs fall between my twin ends.

8 furlongs = 1 mile, and "mile" is in the middle of Smiles! The twin ends are the s's.

Remembering fond days or greeting good friends,

Reasons to smile

All those who see me suspect that they please.

If someone sees you smile, they think that they are making you happy (pleasing you)

To summon me, several folks need to say cheese.

Saying cheese makes people smile