We are currently in the final saga which means not much longer till we reach the final arc and by extension the final chapter
Let's ask ourselves how long Is the average saga?
3 to 4 arcs at least
With each arc lasting on average 1 - 2 years
Wano being an outlier at 4 years
At this point Egghead has been going on a little over a year but I don't think it'll go another whole year
This arc is likely to end by February
After this Arc one can assume Elbaf is next which should start Feb 2024 and I believe will be fairly long lasting until 2026
Now post elbaf is the tricky part on average each saga is filled with 3 to 4 arcs but that doesn't mean oda can't break expectations
But let's assume he continues to follow this average
I believe Raftle will take place before final war because whitebeards dying words was when someone finds the one piece a war that shakes the world will happen.
Now if I'm hopes that Koby is the one to take down black beard doesn't come true, then this will be the perfect opportunity for Luffy to take him down however if Koby does take down black beard I believe raftle will be a 3 way battle between cross guild, red haired and strawhats and this will be the arc Luffy becomes king and Zoro WSS. This arc will likely last at least 3 years given all the action and story telling that needs to happen so let's say raftle starts 2026 and ends some point in 2029
After raftle the final war/final arc will start and this arc will make Wano look like a children's book that's how long it will be
Wano lasted 4 years I believe final arc will last hmm I'd say 6
Bringing one piece to an end in 2035
Give or take a couple years depending on how long the little mini chapters between arcs last
Let's ask ourselves how long Is the average saga?
3 to 4 arcs at least
With each arc lasting on average 1 - 2 years
Wano being an outlier at 4 years
At this point Egghead has been going on a little over a year but I don't think it'll go another whole year
This arc is likely to end by February
After this Arc one can assume Elbaf is next which should start Feb 2024 and I believe will be fairly long lasting until 2026
Now post elbaf is the tricky part on average each saga is filled with 3 to 4 arcs but that doesn't mean oda can't break expectations
But let's assume he continues to follow this average
I believe Raftle will take place before final war because whitebeards dying words was when someone finds the one piece a war that shakes the world will happen.
Now if I'm hopes that Koby is the one to take down black beard doesn't come true, then this will be the perfect opportunity for Luffy to take him down however if Koby does take down black beard I believe raftle will be a 3 way battle between cross guild, red haired and strawhats and this will be the arc Luffy becomes king and Zoro WSS. This arc will likely last at least 3 years given all the action and story telling that needs to happen so let's say raftle starts 2026 and ends some point in 2029
After raftle the final war/final arc will start and this arc will make Wano look like a children's book that's how long it will be
Wano lasted 4 years I believe final arc will last hmm I'd say 6
Bringing one piece to an end in 2035
Give or take a couple years depending on how long the little mini chapters between arcs last