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How much vertical space do a rider and mount occupy together?

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up vote 8 down vote accepted

The two together occupy the same space (in all dimensions) as the mount alone.

Source - Rules Compendium p253, also the Compendium

Also, note that the previous page states that the mount must be at least one size category larger than the rider.

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Sort of the answer I was expecting, but could you add a reference to p199-200 which lists creature sizes in squares, and how size in general is handled three-dimensionally? – Iszi Oct 21 '10 at 14:09

Remember that the space you occupy in D&D also includes the all space you can reach, i.e. the land area of a normal creature is a five-foot square. Nobody really takes up a five foot square but this is the space that your character can easily and quickly affect. In terms of realistic height of a mount with rider the height would be the approximately the shoulder height of the mount (for average horses this is about five feet) plus about half the height of the rider (assuming that the legs are longer than the torso, but in a sitting position) give or take the height of any saddle used. Therefore an average height of a human sitting on a horse is about eight to nine feet.

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This is a good real world measurement, but it sounds like the question was about how much space the rules say they take up. – Oblivious Sage Oct 30 '12 at 15:07
That's not explicitly stated in the question but I did qualify my answer by stating 'in terms of realistic height.' – DrkWizard Oct 30 '12 at 15:27
True, but as this is a Q&A site centered on RPGs, it's generally best to assume questions are looking for rules-based answers unless they specifically state otherwise (and if they specifically state otherwise, they may not be good candidates for this site). – Oblivious Sage Oct 30 '12 at 15:37

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