The accommodation Henry, Tim and I chose for the World Cup in Cesis last year involved 10km each way on gravel, and was pretty much just a hut in the forest...it was quite an experience!
We hit a few gravel roads on a little excursion after the spectator races on Day 5. Had lunch and fika in two smallish villages and then found
a hand powered wooden ferry across the river Gauja that may have been one of the most memorable experiences of this trip.