Carolr

[Carol J Roderick]

I am looking for an easy entrelac scarf to do with the triangles starting in the middle longways. Any ideas?

[Granny Square]

I'm not sure what you mean by 'starting in the middle' AND 'longways'.  

Focusing on the longways I'd start with something like this pattern https://martinupnorthblog.wordpress.com/2018/11/17/adventures-in-entrelac/  , which is worked in rows and explains how to make triangles to square off the edges and corners.

To make it scarf length, I'd swatch to check your gauge and extrapolate the number of chains it says to start with, which is 166 chains for a width of the blanket (which would be the length of your scarf) of 68 cm (which is only about 26")???  Oh wait, that is sport weight yarn, so that would end up longer if you were using a heavier yarn, but that makes the swatch twice as important to estimate the chain length.  Throw in a few extra chains just 'because', I always do that for a long chain and you can pick extra chains out later without fear of unraveling.