A retired horse still needs to move, but the purpose has changed. Exercise now protects his joints, digestion, mood, and soundness at a gentle level, rather than building fitness for work, and the right amount is set by how he feels during the walk and the morning after.
Turnout as the Foundation
Turnout is the foundation, and for many retired horses it does much of the work by itself. A horse moving freely around a field with companions takes hundreds of small steps, grazes, dozes, and shifts position in ways no led walk can copy. Protect that foundation first: a field he can move around comfortably, companions he settles with, and enough hours out each day that he never stiffens from standing in.
Where turnout shrinks in winter, in-hand walks matter more, because they replace the movement the field is no longer giving him. On days when he has had long turnout on decent ground, a short walk may be all he needs, and some days the field alone is enough.
Short Walks on Good Ground
Add short in-hand walks on good ground: firm, level footing in the yard, a quiet lane, or a dry track, walked at his pace rather than yours. Start short and let him set the warm-up, because a retired horse often leaves the stable stiff and loosens over the first minutes. A walk that begins untidy and smooths out is a familiar pattern, and it is the smoothed-out version that judges the outing.
Avoid deep mud, steep slopes, and sharp turns. Mud pulls at legs and shoes and strains soft tissue, steep slopes load joints unevenly, and sharp turns twist a stiff horse in ways straight lines do not. Choose routes that are loops of gentle bends or straight out-and-back lines, and turn him in wide arcs at the ends.
Stop Rules and Small Adjustments
Stop if stiffness or breathing worsens during the walk, and head home by an easy direct line. A retired horse that is stiffer at the end than at the start, or breathing harder than the pace explains, has done enough, whatever distance was planned. Note it, shorten the next outing, and let several easy days pass before testing the longer route again.
Watch the morning after as carefully as the walk itself. Stiffness that lingers into the next day means yesterday's outing was too much, even if he seemed willing at the time. Willingness is a poor measure in a horse that enjoys company and an outing, so the record, not his enthusiasm, sets the next distance.
Company, Grooming, and the Seasons
Build the gentle program around things he already enjoys. A grooming session counts as handling, touch, and a health check in one, and a horse that is brushed daily is a horse whose small cuts, rubs, and heat are found while they are small. Walk him to a grazing spot he likes rather than marching a joyless circuit, and let a companion horse come along where that settles him, because company turns exercise into an outing. Across the seasons, adjust honestly: shorter outings on icy or rutted ground in winter, shade and cooler hours in summer heat, and no guilt about a field-only day when weather makes every route poor, provided turnout itself stays generous.
Note the weather beside each outing in the record, because stiffness after a cold, wet walk reads differently from stiffness after an easy dry one, and the comparison sharpens every later judgment.
Walk length and next-day stiffness are entered in the Pet Passport log on KinsLe, guiding whether the following outing stays shorter.