Barry Salter:
Maximum Length: Line 13 - 22.5km (Central - 74km)

Clive Feather:
I thought 7 was longer, but I don't have the statistics to hand.
I know Mark Brader reads this group and has the data.

I have two sources: "Paris Metro Handbook" (1988 edition) by Brian
Hardy and "Un Siecle de Metro en 14 Lignes" (2000 edition) by Jean
Tricoire. Neither gives all details, but here's what they have.
All distances in km.

Hardy Tricoire
1 14.637* 16.628
2 12.316 12.316
3 11.684 11.665
3bis 1.289 1.289
4 10.598 10.599
5 14.629 14.634
6 13.624 13.665
7 22.8 18.594(+3.882)
7bis 3.066 3.066
8 22.05 22.057
9 19.565 19.562
10 11.708 11.712
11 6.287 6.286
12 13.888 13.888
13 16.854/14.77 22.5
14 * 7.022

*Hardy's book predates the extension of Line 1 beyond Pont de Neuilly
and the opening of the modern Line 14.

For line 7, the first number given by Tricoire apparently shows the
longest distance between two endpoints, i.e. the common part plus the
Mairie d'Ivry branch, while the second number is the length of the
Villejuif branch alone. The two numbers make a total of 22.476 km
of route length.

For line 13, Hardy's two numbers are the distances from the Chatillon
terminus to the two termini at the other end, St-Denis and Gabriel Peri
respectively. He does not give the total route length, while Tricoire
does not give the branch lengths.

Given this and the fact that some of the numbers are given to only one
decimal place, this is not sufficient data to say clearly whether Line 7
or 13 is longer in terms of total route length, although it is clear
that Line 7 has the longest single route. However, both authors *say*
that Line 7 is longest, as Clive does above.

Minimum Length: Line 3 'encores' - 1.3km (Waterloo & City - 2.4km)

Where did you get *this*? It's called "Line 3bis"

Someone was trying to translate "bis" into English?

(there's also a 7bis

True.

and used to be a 13bis).

First I've heard of it, if so.
--
Mark Brader, Toronto | "The singular of 'data' is not 'anecdote.'"
| -- Jeff Goldberg

My text in this article is in the public domain.