The M25 motorway (London Orbital Motorway) is approximately how many miles long?

I used to live about 1 mile from the M25. Pollution was very bad. I am very pleased that I am now living in an area with low pollution levels.

Avoid at all costs!

luckycatfay, I've been on it seven times and still didn't know the answer!

Player #532047, I have never been to London nor have no experience firsthand with this particular Motorway. None the less I got the answer right. Here's what after while you get a feel for numbers. No funny business I mean it you just get a sense of what sounds right compared to the other options.

Player #532047, we do now!!

Player #532047, I've been on it and no idea.

Got it right ... with a hint. Thanks to those who knew this.