The time period is ~medieval. Imagine two characters who are physically fit. One comes from a city, the other has lived his life in the forest. The total distance they'll cover is ~170 miles. The terrain being covered is a forest. The season is late Spring to early Summer so snow is not a factor. The only major obstacle is one river. One of the characters knows the forest well so getting lost is not an issue. Food supplies will need to be hunted/gathered for the most part. (One character has a hunting animal to help with this.) As there are hostiles in the region, inconspicuous camps are important. Right now I've assumed 6-8 miles per day average for a journey length of 18-28 walking days. Adding in rest days once in five and that would put in 3-6 more days for a total of 21-34 days. Is that accurate at all?

Edit: I forgot to explicitly state they're walking.