You can bet on the TwinSpires.com from Wisconsin but you will be required to provide your social security number.  Online sportsbooks licensed outside the state do not have such a requirement and tend to offer much better odds.  BetUS (in business since 1994) welcomes customers from Wisconsin and offers a welcome bonus (max $2500).

The regular registration process allows you to place bets immediately using your credit card and requires limited information. 

While Wisconsin is not known for its gambling, nearly all online betting sites are accessible from within the state.  BetUS  offers a wide variety of wagering in addition to horse racing.

Preakness Stakes 2023 Odds

Sat, May 20, 2023 EST
Rot     To Win The 2023 Preakness Stakes     Moneyline
1     National Treasure         +250
2     Chase the Chaos         +4000
3     Mage         -140
4     Coffeewithchris         +3300
5     Red Route One         +1500
6     Perform         +1800
7     Blazing Sevens         +725

2025 Kentucky Derby Updated Post Positions and Odds

•     Gate 1: Citizen Bull (17-1)
•     Gate 2: Neoequos (57-1)
•     Gate 3: Final Gambit (17-1)
•     Gate 4: American Promise (13-1)
•     Gate 5: Admire Daytona (39-1)
•     Gate 6: Luxor Cafe (15-1)
•     Gate 7: Journalism (7-2)
•     Gate 8: Burnham Square (19-1)
•     Gate 9: Grande (19-1)
•     Gate 10: Flying Mohawk (36-1)
•     Gate 11: East Avenue (33-1)
•     Gate 12: Publisher (30-1)
•     Gate 13: Tiztastic (20-1)
•     Gate 14: Render Judgment (13-1)
•     Gate 15: Coal Battle (30-1)
•     Gate 16: Sandman (5-1)
•     Gate 17: Sovereignty (11-1)
•     Gate 18: Chunk of Gold (33-1)
•     Gate 19: Owen Almighty (44-1)
•     Gate 20: Baeza (50-1)

- Don Shapiro, Gambling911.com