Route-march

Half of the unit was preparing for some training exercise, apparently a route-march carrying full kit.

Source: wiktionary

He then proceeded to lead them on a route-march at a blistering pace that many struggled to keep up with.

Source: wiktionary

We had been out on a route-march. You know, I daresay, that nowadays a route-march is not simply a matter of marching. In a route-march there is involved a certain amount of field training.

Source: wiktionary

This young officer came up to me and asked me whether I would mind marching more slowly -- they were running out of puff. I thought I was supposed to go on a route-march and be back by a certain time.

Source: wiktionary