I don't think it adds much real distance, but it is much more rustic and difficult underfoot--it was a true trail; at times, it was a real scramble and I sank deep into the mud in a couple of places. The ruins of the Monasterio Bogota looked pretty much like a pile of rubble to me, but I didn't go closer to really check it out. Honestly, in retrospect, with the heat, humidity, the closeness of the forest along that detour, and the climbs still ahead to Ciraqui and Lorca, I now regard this as the most difficult day of my entire Camino. For what it's worth, my Fitbit registered more than 40,000 steps, which would be about 17 miles for me, and the regular route is supposed to be only about 14 m. However, I suspect that the extra steps were due more to me taking smaller steps (or slipping/sliding backwards in the mud on that detour!), than a significant increase in actual distance.