JJ is just testing me, but I'll give it a try (without looking at the map) --
From 3 to C, on the road maybe 16 lines, just a guess, wasn't looking at the map much, trail was pretty flat, through the woods maybe 2, total 18.
From C to D, up the hillside not quite to the top, maybe 10, then out the flat hilltop, past the small knoll but not over it, down the hill, over the little knoll right at the end, 1 more, total 11.
From D to E, due south, up out of the first reentrant is 2, at some point turned to get on higher ground, 1 more, plus 1 more over the ridge, then down to the trail. Up the trail maybe 2. Then south into the woods, maybe 3 right away, then another 1 skirting a reentrant, that's about it, total 10.
From E to F, down, cross the stream, climb a little heading mostly south, 2, around the spur, heading west, maybe 1 more, then angle down to the marsh and around it, up to the point, 2 more, total 5.
From F to 8, through the green with a bit of a white gap, maybe 2 getting there, then up the long hillside, maybe 14, down to the point, total 16.
Overall total-- 18+11+10+5+16 = 60 lines = 300 meters.
Now time to look at the
map to see how far I'm off, which shows I climbed 16 +12 + 10 + 4 + 12 = 54 lines = 270 meters. Not so bad, main error was the hill up to 8, felt worse than it was, I guess.
I wish I could remember more useful stuff.