Have climbed Mount Pyxarias several times from various approaches
Trip report with photos and map:
http://www.variouscuriousstuff.com/2017/04/10/hiking-near-athens-mount-pyxarias-euboea/
General information and routes instructions about the mountain in the Greek language:
http://www.variouscuriousstuff.com/2017/04/17/%CF%80%CF%85%CE%BE%CE%B1%CF%81%CE%B9%CE%AC%CF%82-%CE%B5%CF%85%CE%B2%CE%BF%CE%AF%CE%B1%CF%82-%CE%B5%CE%BB%CE%BB%CE%B7%CE%BD%CE%B9%CE%BA%CE%AC-%CE%B2%CE%BF%CF%85%CE%BD%CE%AC/