I ran the Solin Hiking Trail in the middle of February, on an overcast day with little to no wind; perfect running conditions. I started by parking in the car park right next to the start of the route (free parking on Sundays). The first few kilometres through the city are relatively easy and runnable, but things get much harder once you take to the mountains. I passed by the Church of St. Peter and the Prva Lokva spring before arriving at the first big climb of the route. It was here that the route changed to more of a challenging rock scramble than any kind of runnable trail. But, eventually, I made it to the top and the views from Debelo Brdo are amazing. After coming down the mountain near the halfway point, I resupplied just before Klis Fortress. Before my attempt, I had stashed a bag with extra food and water next to the football stadium below the fortress. This is a perfect spot to leave some supplies since there are garbage and recycling bins here for any trash you need to throw away. Then I made my way up the second large climb of the route, to the top of Markezina greda. Around this time, it started to get dark and I had to use my headlamp. Again, the route here is more of a constant rock scramble than a runnable trail, but eventually, I made it to the Church of St. George. I got a bit lost in the dark and overran the control point near Pećina Nugal, so I had to make my way back a bit before finding the trail and reaching the control point. This section is then followed by a very steep climb down the mountain in several different locations before you finally make it back into town and run along the streets to the famous Roman City Ruins. At this point, it was dark so I didn't take any more pictures. I ran past the ruins and finished the route back at the starting point.
All in all, this is a very beautiful but extremely challenging route. I underestimated just how long the rock scramble sections would take and it ended up taking longer than expected (which is why I had to finish in the dark). But I got it done in the end and saw some beautiful places along the way. As for gear, I wore a running pack with water and food and also used hiking poles, which helped a lot with the steep climbs both up and down. I would also suggest bringing a headlamp in case it gets dark. Otherwise, I highly recommend this route to anyone looking for an adventure but would suggest first running some of the sections separately (like the climb to Debelo Brdo or the Church of St. George) to get a gauge for what it's like to "run" for hours across a sharp, uneven terrain of rocks and boulders (i.e., only about 20% of this route consists of "runnable" dirt tracks or roads; the other 80% is all rock scrambling).