It goes from the Mediterranean sea north of Nahariya to the Sea of Galille (Kinneret). Approx. 80 km / 50 miles 3-4 days. The last two days are on the INT.
The last two days are described in the INT guide days 6s and 7s. For the first two days you need to buy the hebrew map of the SPNI, map #2 I think.
Day 1: Carry water for the whole day, no place to refill. Achziv shore on route 4 (6 km north of Nahariya), Nahal Keziv (green trail) to Ma'alot (approx. 22 km). The water in Nahal (creek) Keziv is contaminated and is not suitable for drinking or bathing.
General description: Start on Achziv sea shore. Hike in Nahal Achziv east for ~7 km on a non marked trail. Arrive to Avdon junction on route 70. Take the green trail east, it goes for about 5 km along a road. From Hardalit (Mekorot - the national water suplier - pumping station) hike east on the green trail. it goes in Nahal Keziv. Pass below the Montfort. Continue east on the green trail. Arrive to Ein Ziv (Another mekorot pumping station).
From Ein Ziv it is forbidden to hike east in Nahal Keziv, the area is dedicated to wildlife only.
Climb to Ma'alot on the road that winds on a montain's side and arrive to Ma'alot.
Day 2: Ma'alot / Zuriel - Mount Meron (approx. 17 km)
Carry water for the whole day, no place to refill.
Go along the main road (89) to Zuriel (3 km east of Ma'alot). The road is very busy take extra caution, hike on its' left side. I'd recommend taking a taxi or bus to Zuriel to avoid mishaps.
Go down on a non marked trail back to Nahal Keziv. Continue east to Elkosh junction which is another 4 km to the east. From Elkosh junction take the green trail east in Nahal Keziv. Hike east approx 6 km. Now take a red trail in Nahal Neriya and climb in Nahal Neriya to Mt. Meron (~5 km). The last 1 km is a steep climb. Here you connect to the INT.
Day 3: Mt. Meron to Tzfat (approx. 20 km.) Day 6s in the INT guide.
Day 4: Tzfat - Sea of Galilee (approx. 20 km). Day 7s in the INT guide.
On the last day instead of going to Migdal go east along Nahal Amud to the Kinneret (Sea of Galilee).
Time of year: Spring, part of summer, fall and part of winter.
Will be included in the second edition of the GUIDE