Online horse race betting in Colorado is legal and fully regulated — anyone 18 or older inside state lines can wager on Thoroughbred, Quarter Horse and Arabian racing through a licensed advance-deposit (ADW) racebook. Every major US horse racing betting site operates here — TwinSpires, FanDuel Racing, AmWager, DRF Bets, NYRA Bets and 1/ST BET — each covering Colorado’s own Arapahoe Park alongside daily cards from Churchill Downs, Saratoga, Santa Anita and tracks across the UK and Ireland from a single account.

Colorado is also a state that permits fixed-odds horse racing: bet365 lets customers 21+ bet online, lock in win and place prices upfront instead of waiting on the pari-mutuel pools. The state’s only live track, Bally’s Arapahoe Park in Aurora, runs a roughly 31-day summer-to-fall meet and anchors a statewide network of 10+ off-track betting locations. Online sports betting, live since May 2020, rounds out one of the country’s most competitive dual-market scenes — 25+ licensed apps, FanDuel, DraftKings, BetMGM and Caesars among them — for bettors 21 and over.

Colorado (CO) Horse Race Betting Facts: Online horse race betting in Colorado is legal for bettors 18+ through licensed ADW racebooks; one of the few states to also allow fixed-odds horse racing (bet365, 21+). Dual market — online sports betting live since May 2020, 25+ apps, 21+. Live track: Bally’s Arapahoe Park (Aurora), Thoroughbred/Quarter Horse/Arabian, ~31-day summer–fall meet + 10+ OTBs. Top Colorado horse racing betting sites & apps (ADWs): AmWager (best), TwinSpires, FanDuel Racing, DRF Bets, NYRA Bets, 1/ST BET — each with welcome offers and promo codes.

Best Horse Racing Betting Sites in Colorado (2026)

All major US Advance Deposit Wagering (ADW) apps operate in Colorado. Each lets you bet every Colorado track plus US, UK and international racing from one account. Minimum age 18.

1. 1
   ★ TOP PICK

   AmWager

   ★ 4.8 / 5

   Colorado legalized online sports betting and ADW wagering together in May 2020, and AmWager fits the state’s bet-anywhere ethos: independent, with a 6–8% rebate on every wager, win or lose. It carries Arapahoe Park’s summer meet in Aurora — the state’s only track — plus 250+ signals nationwide in HD, with the fastest cashier in our 2026 ADW testing.

   $50 DEPOSIT MATCH 6-8% REBATES LIVE STREAMING 250+ TRACKS
   Sign up at AmWager → Bonus: 100% deposit match up to $50
   18+. New AmWager customers only. Limit one signup bonus per person. Match applies to first deposit only, up to $50. To unlock the full bonus, deposit $50 and place qualifying wagers totaling $50 within 30 days. Cancelled or refunded bets don't count. Bonus credited in single deposit within 7 business days of meeting requirements. Bonus credits are non-withdrawable; winnings are cash and withdrawable. Unused bonus expires after 30 days. · Full AmWager review
2. 2

   TwinSpires

   ★ 4.5 / 5

   Best for: Triple Crown. Churchill Downs Inc.’s TwinSpires is the Triple Crown app in Colorado — official wagering partner of the Kentucky Derby, with the deepest stakes coverage on the market. Locally it carries Arapahoe Park’s short summer meet, and its rewards program rewards regular play.

   Bonus: $200 bonus after $500 in wagers · Min age 18
3. 3

   FanDuel Racing

   ★ 4.6 / 5

   Best for: Live streaming. FanDuel Racing — TVG, owned by Flutter — gives Colorado players the same polished app as the day-one FanDuel sportsbook, carrying Arapahoe Park alongside the national simulcast menu. Expect strong daily coverage, expert handicapping picks, and a first-bet refund up to $500 for new accounts.

   Bonus: Up to $500 back on first wager if it loses · Min age 18
4. 4

   DRF Bets

   ★ 4.3 / 5

   Best for: Handicapping data. DRF Bets is the handicapper’s pick in Colorado: a funded account includes unlimited DRF Classic past performances and Beyer Speed Figures. It covers Arapahoe Park and the national menu — a strong, data-driven companion even for bettors who wager elsewhere.

   Bonus: 100% deposit match up to $200 · Min age 18
5. 5 NYRA Bets
   $200 in cash rewards after $400 in wagers
6. 6 1/ST BET
   Choice of three options up to $500

Best Colorado Horse Race Betting Apps: Coverage, Rebates & Bonuses

Choosing the best horse racing betting site in Colorado comes down to three things: track coverage, rebates and live streaming. The top online horse race betting apps — AmWager, TwinSpires and FanDuel Racing — carry 250+ US and international tracks in HD, pay cashback on every wager (AmWager runs 6–8% rebates, win or lose), and bundle handicapping tools like DRF Classic past performances and Beyer Speed Figures.

Every Colorado-legal racebook offers a new-customer welcome bonus, from AmWager’s 100% deposit match up to $50 to FanDuel Racing’s first-bet refund up to $500. Because all of them are advance-deposit wagering (ADW) operators, you fund the account once, bet from your phone anywhere inside state lines, and withdraw winnings straight to your bank — no trip to Arapahoe Park required.

Best Sportsbook Apps in Colorado (2026)

Licensed online sportsbooks operating in Colorado, regulated by the state gaming authority. Minimum age 21.

1. 1
   ★ EDITOR'S PICK

   FanDuel Sportsbook

   ★ 5.0 / 5

   FanDuel was one of four books live on Colorado’s May 1, 2020 launch day, operating under a master license with Bally’s Black Hawk West Casino in the mountains. It’s the state handle leader — cleanest app, deepest same-game parlays, the current Bet $5-a-day-for-7-days, $350-guaranteed offer — and Colorado’s low 10% tax keeps promos generous.

   BET $5 GET $350 SAME-GAME PARLAY LIVE STREAMING
   Sign up at FanDuel → Bet $5 for 7 days, Get $350 in Bonus Bets — Guaranteed
   21+. New customers only, 21+ (18+ in DC, KY and WY) and present in eligible states. First online real-money wager only; place a $5+ wager on each of 7 consecutive days to receive $50 in Bonus Bets per day ($350 total, guaranteed). $5 first deposit required. Bonus Bets are non-withdrawable and expire 7 days after receipt. See full terms at sportsbook.fanduel.com. · Full FanDuel Sportsbook review
2. 2

   DraftKings

   ★ 4.8 / 5

   Best for: Daily fantasy + sportsbook. DraftKings was among Colorado’s first wave in May 2020, running on a master license with Bally’s Black Hawk North Casino. It’s a top-two book by handle, strong on props and live betting, with a daily-fantasy funnel that suits Colorado’s sports-obsessed, outdoorsy market.

   Bonus: Bet $5, Get $200 · Min age 21
3. 3

   BetMGM

   ★ 4.6 / 5

   Best for: MGM Rewards crossover. BetMGM operates in Colorado through the Midnight Rose Casino in Cripple Creek, one of the state’s historic mountain gaming towns. For MGM Rewards members the draw is the crossover — Colorado wagers earn tier credits good across MGM resorts in Las Vegas.

   Bonus: $1,500 first-bet offer · Min age 21
4. 4

   Caesars

   ★ 4.5 / 5

   Best for: Caesars Rewards. Caesars runs in Colorado via the Horseshoe and Lady Luck casinos in Black Hawk, with Caesars Rewards baked in — Colorado bets earn the same tier credits as a Las Vegas stay. The app is deep on odds boosts and parlay tools.

   Bonus: $1,000 first-bet · Min age 21
5. 5
   ★ BEST LOYALTY PROGRAM

   BetRivers

   ★ 4.5 / 5

   Rush Street’s BetRivers was an early Colorado operator, running under its own Colorado master license. Its iRush Rewards program is among the most generous loyalty schemes in US betting, paying out on every wager — and where Colorado allows it, the iCasino tie-in adds value.

   UP TO $500 2ND CHANCE BET PROMO CODE USBTRV iRUSH REWARDS iCASINO LINK
   Sign up at BetRivers → 2nd Chance Bet up to $100
   21+. Colorado customers only. $10 minimum deposit. First wager placed within 30 days qualifies; if it loses, BetRivers returns the stake up to $100 as a single Bonus Bet. Bonus Bet expires after 30 days, 1× playthrough requirement. Use promo code USBTRV at signup. 21+. T&Cs apply. · Full BetRivers review
6. 6 bet365
   Bet $5, Get $200 in Bonus Bets
7. 7 Fanatics Sportsbook
   Bet and Get up to $2,000
8. 8 theScore Bet
   $1,000 First Bet Reset · rebranded from ESPN BET (Dec 1, 2025)

Colorado’s one racetracks — addresses & live cards

Signature stakes races at Colorado’s tracks

Beyond the everyday cards, each Colorado track hosts at least one feature stakes race that draws statewide attention — most are bettable through every ADW listed above.

How Colorado compares to neighboring states

Who regulates horse racing & sports betting in Colorado

Colorado uses two separate regulators for horse racing and sports wagering — each licenses operators independently.

Colorado horse betting — frequently asked questions

Is online horse racing betting legal in Colorado?

Yes. Licensed ADW racebooks accept wagers from anyone 18 or older located in Colorado. The state also allows fixed-odds horse racing — bet365 offers locked-in prices for customers 21+.

What's the best horse racing app in Colorado?

Our editors rate AmWager the top pick — 250+ tracks, 6–8% rebates and a 100% deposit match up to $50. Sign up at AmWager. TwinSpires, FanDuel Racing, DRF Bets, NYRA Bets and 1/ST BET also serve Colorado, along with DK Horse.

Which racetracks are in Colorado?

Bally’s Arapahoe Park in Aurora is the only live track, running a roughly 31-day Thoroughbred, Quarter Horse and Arabian meet in the summer and fall. More than 10 OTB locations across the state offer simulcast wagering year-round.

Is sports betting legal in Colorado?

Yes — online and retail since May 2020, regulated by the Limited Gaming Control Commission. With 25+ apps it’s one of the most competitive markets in the US, and betting on in-state college teams is permitted. Minimum age 21.

What's the minimum age to bet in Colorado?

21 for sports betting and fixed-odds horse racing; 18 for pari-mutuel ADW horse wagering.

Can I bet the Kentucky Derby from Colorado?

Yes. Every Colorado-legal ADW carries the Kentucky Derby, Triple Crown and Breeders’ Cup, and you can also take fixed-odds Derby prices through bet365.

New to horse betting in Colorado? Explore our guides for clear answers to the most common questions — explained by veteran horse racing commentator Mike Brunker of the Las Vegas Review-Journal.