Thank you so much for sending me this, @quandocoeli ! All very cool!
An interesting question: how much do horses help? There are situations (long-haul hikes) where they’re sort of as much of a liability as a help. They really walk at Human Speed, or close to it, and horses weirdly have less stamina over long hauls than humans do. I don’t think a lot of fantasy authors realise this. If you spend time around horses, you will realise it, though.
Human and horse walking speeds match very nicely.
Horses will walk for about as many hours a day as we do (about six-ish, especially if it’s day after day after day, I.e. long travel.)
You can go at faster gaits on a horse. They trot (similar to our jogging) canter (running lightly) and gallop (running fast.) they do not do this for long trav. you might get a horse to trot on and off all day, but would not, not even a little bit, trot from the Shire to Mordor.
If you push too hard and knacker your horse, you have to rest them.
Quite a lot of human history, from military to economic, has been about Dragging the Horses Around.
Anyway, a walking horse goes like 4mph. That’s on Google maps already. Pick the Walking route. It’s the same thing.
But that’s the automatic “it would take an hour for both myself and a horse, or myself ON the horse, to walk 4 miles” answer. Writers who are interested in the problem are probably picturing something slightly more plot-relevant than walking to the gas station for scratch tickets and an Arizona Iced Tea.
I was interested to know if this could connect and hold true in terms of a long-term travel - say, a LotR-esque quest over weeks and different terrains - and thanksfully, I have a relevant interest to hand. Once again, the Camino de Santiago.
today, you may complete the Camino de Santiago on foot or on horseback. There are many horse rental agencies. A reasonable middle of the road pace suggested by one is: Riding between 25-35 km for 6-7 hours a day (normal mode). Various routes include terrain like mountains and plains; they presume you’ll largely camp. You are not allowed to run the horse into the ground (they will get mad at you) and a pilgrimage should be an amble, not a march. Plus, it’s hot in Spain and there are mountains; you’re going to be mooching and drinking water to survive this six-week hike.
but like I said: a keen math-brained person will note that this is basically human walking speed. It’s also about the time walked and distance covered by the human-only hikers. This strongly suggests that experienced horse-rental long-haul pilgrims don’t break above a walk, or do so very infrequently to maintain the average speed. and certainly aren’t cantering the whole Camino.
(This is definitely a modern company being mindful of horse welfare, although pragmatic animal welfare probably doesn’t stray too far from pragmatic medieval people not wanting to kill their horse. But is also the far more immediate concern that 6 hours in a day about as long as an average human wants to be on an average horse. Like, cattle drives are the outliers.)
You’ll see that the matches up to the second post. The horse in the Finnish expedition went about 20 miles a day, which is at the top end of the human Camino pilgrim and about what a Camino horse does, but heat/hydration is a major consideration on the Camino and probably less of a worry in Finland. 20 miles a day at 4 mph is 5 hours of riding on flat perfect ground and wrinkles if you need to add hills and hydration.
As the pilgrimage has thousands of pilgrims per year and excellent travel records going back to the medieval era, it would be really interesting to work out if this is a “fast” or “slow” estimation of horseback travel by fantasy standards. Are we being nicer to horses? Did medieval horsemen make them walk 10 hours a day? Has better diet and better understanding of fitness/gear sped up humans or given us more stamina? Do roads make a difference? There are a million considerations. If any of them are helpful in your novel, there is a very well-documented horse/human walking route across Spain in which medieval records can be compared directly to 2025 forum posts - a very rich seam, if you know what your question is!
But in general, especially for long journeys over many days, human walking speed on google maps is actually a surprisingly good rule of thumb for horse walking speed.