Cost-Plus Under a cost-plus arrangement, the owner agrees to pay the contractor the actual costs of construction of the project plus a predetermined fee, which may be in the form of a stipulated amount or a percentage of the construction costs.
How often a horse needs to see a farrier will vary from horse to horse. I find that with my miniature Shetland ponies the farrier needs to come out about every 10-12 weeks depending on the state of the hooves.
Wikipedia supports this, with a claim of 30 miles (50km) per day for a small mounted company. This involves the horse walking for most of the duration of the day, with short breaks. Of course, a fit horse can travel further than this. Mounted soldiers would ride their horses 50-60 miles (80-100 km) in a day. This is more taxing on both the horses and the riders. Over the course of 6 weeks of travel, it's possible that good riding horses would get into better travel shape, and be able to go further, perhaps in the 40 mile (65 km) per day range. This would involve spending much of the day at a pace faster than a walk, such as a trot, though not at a canter or gallop.