Merry able to see 100 miles?

[Malton Seadog]

Hi all,

I registered just to ask this question, but I'm sure I'll be a regular poster from now on!

In the 'Flight to the Ford' chapter of FOTR:

"What is that other river we can see far away over there?", asked Merry.
"That is Loudwater, the Bruinen of Rivendell", answered Strider.

Now look atthis map and compare their location (just south of the road near the Last Bridge) to the Bruinen at it's nearest point. It's almost 100 miles!

Thoughts?