otb.us - Off Track Betting US


Montana Off Track Betting



  • Belgrade Lounge
    32 East Main
    Belgrade, Montana 59714
    Tel. No.: +1 406 388-6098


  • Play Inn
    1432 Main Street
    Billings, Montana 59105
    Tel. No.: +1 406 252-9034

  • Doc & Eddy's
    15th & Broadwater
    Billings, Montana 59102
    Tel. No.: +1 406 248-8728


  • BB's Casino
    3878 Paxson
    Butte, Montana 59701
    Tel. No.: +1 406 494-6062

Great Falls

  • Halftime Sports Bar
    1199 Northwest Bypass
    Great Falls, Montana 59404
    Tel. No.: +1 406 727-8053


  • Bull's Eye Casino
    1612 Prospect Avenue
    Helena, Montana 59601
    Tel. No.: +1 406 449-2419

  • Motherlode Sport's Bar
    1428 Cedar Street
    Helena, Montana 59601
    Tel. No.: +1 406 443-3510


  • Sawbucks
    1301 South Main
    Kalispell, Montana 59901
    Tel. No.: +1 406 755-4778

Miles City

  • Golden Spur Casino
    1014 South Haynes Avenue
    Miles City, Montana 59301
    Tel. No.: +1 406 232-3544


  • Lucky Strike Casino
    1515 Dearborn Street
    Missoula, Montana 59801
    Tel. No.: +1 406 549-4152

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Parimutuel betting (French for mutual betting) is a betting system in which all bets of a particular type are placed together in a pool; taxes and a house take are removed, and payoff odds are calculated by sharing the pool among all placed bets.

The parimutuel system was invented by Parisian perfume maker Pierre Oller in 1865 when asked by a bookmaker friend to devise a fair system for bettors which guarantees a fixed profit for the bookmaker.

The large amount of calculation involved in this system led to the invention of a specialized mechanical calculating machine known as a totalisator, "automatic totalisator" or "tote board".

The first was installed at Ellerslie Racecouse in Auckland, New Zealand on 1913. Since then totalisators came into widespread use at race courses throughout the world. The first totalisator in the US as installed at Arlington Park, near Chicago, Illinois in 1933.

The parimutuel system is used in gambling on horse racing, greyhound racing, jai alai, and all sporting events of relatively short duration in which participants finish in a ranked order.

A modified parimutuel system is also used in some lottery games such as Lotto South.

Parimutuel gambling is frequently state-regulated, and offered in many places where gambling is otherwise illegal. Parimutuel gambling is often also offered at OTB facilities, where players may bet on the events without actually being present to observe them in person.

Parimutuel betting differs from fixed odds betting in that the final payout is not determined until the pool is closed - in fixed odds betting, the payout is agreed at the time the bet is sold.