Question 1

What is the difference between Farther and Further?

Accepted Answer

For physical distance, either word is correct: 'a few miles farther' and 'a few miles further' mean the same thing. Further is more common in British English, farther is more common in North American English for distance. Only further works for 'more' or 'additional' ('further questions', 'until further notice'), and further is usually preferred for degree ('let's think about this further').

Question 2

How do I know if I mean Farther rather than Further?

Accepted Answer

Readers who land here meaning Farther rather than Further are usually searching for phrases like “farther or further”, “further information or farther information”, “farther vs further british english”.

Aspect	Farther	Further
Physical distance	Yes	Yes
'More, additional'	No	Yes: 'further details'
Degree or extent	Less usual	Preferred: 'take it further'
More common for distance in	North American English	British English

Side by side

Which one did you mean?

Farther

Read either one in full