JRA Horse Racing Japan — Race Cards, Results & Payouts

Structured, English-native data for Japanese central horse racing (JRA) — home of Equinox, Almond Eye and the Japan Cup, and one of the biggest racing jurisdictions in the world (~¥3 trillion annual turnover). Data comes on demand from netkeiba's official English site (en.netkeiba.com, public server-rendered pages, no login). One call per race returns:

• Full result (finished races) — finish order, brackets & numbers, sex/age, weight carried, jockey, final time, win odds, trainer & barn, body weight change, plus every payout pool: win, place, bracket quinella, quinella, wide, exacta, trio, trifecta
• Race card (upcoming races) — all runners with jockeys, weights, live win odds and favorite rank
• Race metadata — venue, race number & name, start time, surface (turf/dirt/jump), distance, going, field size
• Day mode — give a date (YYYYMMDD) and get every JRA race that day resolved and fetched automatically

English names come from the English site itself — no machine translation, no EUC-JP decoding, no proxies needed.

Pricing — from $0.02 per race, no subscription

Event	Price	When
Race analyzed (result or card)	$0.02	Per race
Individual horse	$0.002	Only if you enable Include individual horses

A default run (1 race) costs $0.02. You are never charged for a race that returns no data.

Input

Field	Example	Notes
raceIds	["202603020712"]	12-digit ids: YYYY+venue+meeting+day+race. Or paste race page URLs
date	"20260726"	Alternative: fetch a whole race day (up to maxRaces)
maxRaces	12	Cap for day mode
includeIndividualEntries	false	Push each horse as a record

Output example (result)

{
  "type": "race_result",
  "raceId": "202603020712",
  "venue": "Fukushima",
  "raceNumber": 12,
  "raceName": "3yo+ ALW (1 Win)",
  "startTime": "16:30",
  "surface": "dirt",
  "distanceM": 1150,
  "runners": 16,
  "going": "Gd",
  "status": "finished",
  "results": [
    {"finishPosition": 1, "bracket": 3, "horseNumber": 6, "horseId": "2023101112",
     "horseName": "Royal Spire", "sexAge": "3C", "weightCarriedKg": 55.0,
     "jockey": "R.Sakai", "time": "1:08.3", "winOdds": 4.0,
     "trainer": "T.Kurita", "trainerBarn": "Miho", "bodyWeightKg": 464, "bodyWeightDiffKg": 0}
  ],
  "payouts": [
    {"betType": "win", "numbers": [6], "payoutsJpy": [400]},
    {"betType": "place", "numbers": [6, 2, 8], "payoutsJpy": [160, 140, 250]},
    {"betType": "trifecta", "numbers": [6, 2, 8], "payoutsJpy": [12340]}
  ]
}

Use cases

• Prediction models & backtesting — results with odds, payouts and body weights, keyed by a stable race-id scheme
• International racing coverage — JRA data in English for tools, bots and dashboards (Japan's top races increasingly feature in world rankings)
• Betting analytics — payout pools per race for takeout/value analysis across venues and distances

Notes & limits

• Covers JRA (central) racing via en.netkeiba.com; local (NAR) racing is not included in v1
• Results appear ~10 minutes after each race; before that the actor automatically returns the race card instead (status: "not_run_yet")
• Read-only and throttled (~1 request / 1.5 s). No login, no personal data, nothing stored between runs

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日本語ガイド

JRA中央競馬のレースデータ(出馬表・結果・全払戻)を netkeiba 英語版から1コールで返す Actor です。

• 概要: レース単位で、確定後は着順・タイム・単勝オッズ・騎手・馬体重増減+全払戻(単勝〜3連単)、発走前は出馬表(騎手・斤量・オッズ・人気)を英語フィールド名で返します。date(YYYYMMDD)を渡せば当日の全レースIDを自動解決します。
• 使い方: raceIds に netkeiba の12桁レースID(例: 202603020712)またはレースページURLを入力。または date で日付指定。
• 料金: レース1件 $0.02。馬単位のレコードが必要な場合のみ includeIndividualEntries を ON(+$0.002/頭)。データが取れないレースには課金されません。サブスクリプション不要です。