Hi,
Caroubier Hippodrome was correctly tagged with leisure=sports_centre + sport=horse_racing. You have retagged it to leisure=horse_riding, but tag is not appropriate for hippodromes, compare OSM wiki:
sport=horse_racing
leisure=horse_riding

The French name of the preset for hippodromes in iD is "Course hippique".

Hi,
way/1234376125 sieht auf dem Luftbild aus wie ein Gebäude; das ist wahrscheinlich eine Reithalle (https://www.reitsportarena.ch/reitsportzentrum). Für Reithallen gibt's in iD neuerdings auch ein Preset "Reithalle".

Hi,
way/1234122646 looks like a riding arena and not like a riding centre (leisure=horse_riding). Riding arenas are usually tagged leisure=pitch + sport=equestrian. In JOSM you can use the preset for sport=equestrian to do that. Compare osm.wiki/Tag%3Aleisure%3Dhorse_riding

Hi,
The riding arenas are usually tagged as pitches and not as tracks. In JOSM you can use the preset for sport=equestrian to do that,

Hi,
way/1234029521 is a riding arena and not a riding centre. iD has a separate preset for riding arenas which sets the usual tags leisure=pitch + sport=equestrian (instead of leisure=horse_riding). Compare osm.wiki/Tag%3Aleisure%3Dhorse_riding
way/1203406685 (example)

Hi,
bzgl. way/1233419522 :
Ein Schuppen (building=shed) ist wohl kaum eine Reitanlage (leisure=horse_riding). Im Wiki steht zu Tag leisure=horse_riding : "Die Anlage sollte das ganze Gelände einschließen: Pferdeställe, Reitplätze, Reithalle, andere zugehörige Gebäude oder Paddocks ..." Wenn way/205040125 (name=Reiterhof Hüllen) dieses Gelände ist, dann sollte das leisure=horse_riding da dran. Ich habe aber keine Ahnung, ob dieser Reiterhof Hüllen noch existiert.
Der Schuppen ist auch ziemlich groß. Falls es eine Reithalle ist, könnte man ihn umtaggen zu building=riding_hall.
Vgl.
osm.wiki/DE:Tag:leisure=horse_riding
osm.wiki/DE:Tag:building=riding_hall
way/150892519 (Beispiel)

Hi,
die 3 Flächen, die du hier als Reitanlagen (leisure=horse_riding) gemappt hast, sehen eher aus wie Reitplätze bzw. Round-pen's (kleine runde). Für Reitplätze gibt's in iD ein Preset mit dem sinnigen Namen "Reitplatz", welches die dafür üblicherweise verwendeten Tags leisure=pitch + sport=equestrian setzt. Bitte achte auf die Wahl des korrekten Presets, je nachdem, was du mappen willst. Vgl. osm.wiki/DE:Tag:leisure=horse_riding

Hi,
way/1233173597 looks like a riding arena, but you have tagged it leisure=horse_riding, which is the tag for riding centres. In OSM riding arenas (and also round pens) are usually tagged leisure=pitch + sport=equestrian and in iD there is a different preset for ridng arenas than for riding centres that sets these tags. Please make sure you use the correct presets depending on what you want to map.

This is also relevant for
way/1232990494
way/1232990497
and
way/1221066229

Compare
osm.wiki/Tag%3Aleisure%3Dhorse_riding
way/1036361201 (example)

Hi,
way/1233395171 looks like a riding arena, similar to way/1216687976. So why did you tag it differently?

Hi,
way/1232699155 looks like a riding arena and not like a riding centre. In OSM riding arenas are usually tagged leisure=pitch + sport=equestrian and iD has a preset that does that witch French name "Terrain d'equitation". Compare osm.wiki/FR:Tag:leisure=horse_riding

Hi,
This was a bad idea. You have removed the building tag (building=yes). This is a building and therefore should have a building tag, otherwise it is not rendered as a building. You have replaced the building tag with leisure=horse_riding. This tag is for riding centres and not for buildings. If this building is a riding hall / indoor arena you can tag it building=riding_hall. iD does not have a preset for this currently, but in the next release it will.
Compare:
leisure=horse_riding
osm.wiki/Tag%3Abuilding%3Driding_hall
way/1008067851#map=18/53.66750/-2.74167&layers=P

Das ging schnell ;)
Aber hier sind noch zwei:
way/1231185297
way/1231185298

Hallo,
soweit ich das auf den Luftbildern gesehen habe, sind alle Flächen, die du als Reitanlage (Tag leisure=horse_riding) gemappt hast, Reitplätze oder Paddocks und keine Reitanlagen (Reiterhöfe o.ä.). Kannst du die bitte dementsprechend (um)taggen? Für Reitplätze ist es in iD ganz einfach: Einfach nach "reitplatz" suchen und auswählen; das setzt dann die Tags leisure=pitch + sport=equestrian. Für Paddocks kannst du z.B. landuse=animal_keeping nehmen, dafür gibt es aber kein Preset.
Die komplette Reitanlage, wo das Tag leisure=horse_riding dran käme, kannst du als Knoten oder Fläche mappen, wie z.B. Reitstall Pundt: way/249503322 oder Huder Reiterhof node/10593910686
Vgl. auch osm.wiki/DE:Riding

Tut mir leid wenn OSM nicht so einfach ist wie man es sich wünschen würde oder denkt.

Hi,
these four objects are buildings and you have retagged them to riding centres, the iD editir has removed building=yes and added leisure=horse_riding. Therefore they are no longer rendered as buildings on the map. I would recommend to undo this because a) every building should have a building tag. b) the tag leisure=horse_riding is not meant to be used for buildings but for complete riding centres and c) there should be only one OSM object with tag leisure=horse_riding for every riding centre (which in your case is node/11414709495). For different types of buildings there are different building tags available, e.g. building=stable, building=riding_hall, building=barn, building=roof etc.

Related links:
osm.wiki/FR:Tag:leisure=horse_riding
osm.wiki/FR:Tag:building=stable
osm.wiki/FR:Tag:building=barn
osm.wiki/FR:Tag:building=riding_hall
osm.wiki/FR:Tag:building=roof

Hi,
way/1230183067 doesn't look like a riding centre but you have tagged it leisure=horse_riding which is the tag for riding centres. This small area looks more like a riding arena and in OSM riding arenas are usually tagged leisure=pitch + sport=equestrian, and iD has a preset "Horse Riding / Rodeo Arena" that does that, Compare osm.wiki/Tag%3Aleisure%3Dhorse_riding

Hi,
Why did you tag way/1230325633 with leisure=horse_riding (for riding centre) and way/1228873246 with leisure=pitch + sport=equestrian (for riding arena)? I think they are both riding arenas. Compare osm.wiki/Tag%3Aleisure%3Dhorse_riding

You're right, a riding arena is not a pitch, but in the early days of OSM someone started tagging them that way, it spread and after a while so many were tagged that way that it can't be changed any more. Have a look at leisure=pitch#Examples !

Hi,
Not so bad, Some things you could improve:
- Outdoor arenas are usually tagged leisure=pitch + sport=equestrian (iD preset "Horseback Riding / Rodeo Arena")
- Indoor arenas can be tagged building=riding_hall (there is no iD preset yet, will be in next release)
- Horse exercisers can be tagged animal=horse_walker (there is no iD preset yet)

Compare
Wiki:
- building=riding_hall
- animal=horse_walker
Examples:
- way/1008067851
- way/1230004271

Hi,
I think the riding hall should not get the horse_riding tag because this tag is for the whole area of the rideclub, see leisure=horse_riding#When_not_to_use
If you want to put a leisure tag on the riding hall then better use leisure=sports_hall, see building=riding_hall#Use_as_a_riding_hall This would avoid nested leisure=horse_riding tags.

I have no special qualifications to answer these questions, but here are my thoughts:

Polo fields

It seems that most of them (386) are tagged leisure=pitch + sport=polo. I think it makes some sense because I would not call a polo field a riding arena. OTOH round pens are usually tagged like riding arenas nevertheless and there seems to be (see wikipedia) also "arena polo" which is played in smaller polo arenas. A seperate sport=* tag for every equestrian activity is perhaps not such good idea. Therefore I do not want to give a recommendation how to tag polo fields. Maybe you want to ask about that in the community forum. Compare old wiki discussion osm.wiki/Talk:Tag:sport%3Dequestrian#Subtags_for_Dressage_and_Jumping_Arenas

Therapeutic riding

I am not aware that any therapeutic riding center tag exists.
https://overpass-turbo.eu/s/1ExV finds some riding centres for therapeutic riding that are already mapped.
I can imagine that a new (sub)tag for therapeutic riding could be invented with key healthcare:speciality=* which could then be used in combination with leisure=horse_riding or with some other main tag. But I am not familiar with the tagging of healtcare facilities, so maybe better ask about that in the community forum. If you want to invent/propose new tags, see osm.wiki/Any_tags_you_like and osm.wiki/Proposal_process for a number of things to consider.