France, including its overseas territories does have 8 time zones, namely; UTC -10,-9,-4,-3,+1,+3,+4 and +12 while Russia has 11.
In conclusion; highest span from UTC -10 to +12, while Russia has 11 from UTC +2 up to +12.
Mayotte, Reunion and French Guiana are technically part of France itself, so I'll give you 4. Russia clearly has more with 11.
I would remove the question, but if you really want to keep it, add an "includes dependent territories" comment.
They are all overseas; one or two are officially "France" but most are dependent overseas territories.
Similarly, the lowest point of Brazil is in the State of Rio Grande de Sul, at around -33.7N, and the highest point is at state of Roraima, at around 5.1N, making the difference as 38.6, which is slightly higher.
The highest point in Chile is -17.6N, and the lowest point is -53.8N, so the difference is only 36.2, making it the third.
Why does it not count? Alaska and the contiguous 48 are not a "single landmass" but two landmasses that happen to be located on the same continent.