As a CI at an outdoor centre, I took this seriously (as did most of my colleagues) for all the sports we did. Not just trail/path/bank damage, but just being a good neighbour.
We would avoid areas prone to damage, use a variety of venues, look after ‘our’ venues with steps or paths or even throwing some grass seed down in one instance. Spreading load was more effective than trying to get sorted on maintenance. Our gorge walking path ‘moved’ each year. The staff tried to use different locations for walks/camps/games.
Biking wise, our centre that did a lot did have staff that went out on some dig days in staff time, but they mainly used 7-stanes or our own property. We also went out with National Trust and our DofE volunteers on a good few mountain paths (our main damage load) each year and did works such as repair, improving drainage and tree planting.