# US road courses compared Road America is the longest of these 20 outlines at 4.048 mi (6.515 km). Lime Rock is the shortest verified outline at 1.474 mi (2.372 km). The table shows published layout figures. Where a TrackOutline sticker outline differs, the note says so. A blank cell reads Not published. | Track | State | Length | Length (km) | Turns | Direction | Opened | Major series | | --- | --- | --- | --- | --- | --- | --- | --- | | [Sebring](https://www.trackoutline.com/guides/sebring-international-raceway) | FL | 3.74 mi | 6.019 km | 17 | Clockwise | December 31, 1950 | IMSA 12 Hours of Sebring, Trans-Am | | [COTA](https://www.trackoutline.com/guides/circuit-of-the-americas) | TX | 3.426 mi | 5.513 km | 20 | Counter-clockwise | October 21, 2012 | Formula 1, MotoGP, NASCAR, FIA World Endurance Championship | | [VIR](https://www.trackoutline.com/guides/virginia-international-raceway) | VA | 3.27 mi | 5.262 km | 17 | Clockwise | August 3, 1957 | IMSA, MotoAmerica, Trans-Am | | [Road Atlanta](https://www.trackoutline.com/guides/road-atlanta) | GA | 2.54 mi | 4.088 km | 12 | Clockwise | September 13, 1970 | IMSA Petit Le Mans, MotoAmerica, Trans-Am | | [Watkins Glen](https://www.trackoutline.com/guides/watkins-glen-international) | NY | 3.45 mi | 5.552 km | 11 | Clockwise | 1956 | NASCAR Cup, IMSA | | [Laguna Seca](https://www.trackoutline.com/guides/weathertech-raceway-laguna-seca) | CA | 2.238 mi | 3.602 km | 11 | Counter-clockwise | November 9, 1957 | IndyCar, IMSA, MotoAmerica | | [Road America](https://www.trackoutline.com/guides/road-america) | WI | 4.048 mi | 6.515 km | 14 | Clockwise | September 10, 1955 | IndyCar, IMSA, GT World Challenge America, MotoAmerica, Trans-Am | | [Mid-Ohio](https://www.trackoutline.com/guides/mid-ohio-sports-car-course) | OH | 2.258 mi | 3.634 km | 13 | Clockwise | 1962 | IndyCar, IMSA Michelin Pilot Challenge, MotoAmerica | | [Barber](https://www.trackoutline.com/guides/barber-motorsports-park) | AL | 2.38 mi | 3.830 km | 15 | Clockwise | 2003 | IndyCar, MotoAmerica | | [Daytona road](https://www.trackoutline.com/guides/daytona-international-speedway-road-course) | FL | 3.56 mi | 5.729 km | 12 | Counter-clockwise | February 22, 1959 | IMSA Rolex 24 on this course. NASCAR Cup on the tri-oval. | | [Roebling](https://www.trackoutline.com/guides/roebling-road-raceway) | GA | 2.02 mi | 3.25 km | 9 | Not published | 1959 | Not published | | [Palmer](https://www.trackoutline.com/guides/palmer-motorsports-park) | MA | 2.3 mi | 3.7 km | 14 | Either way | May 2015 | Not published | | [CMP](https://www.trackoutline.com/guides/carolina-motorsports-park) | SC | 2.279 mi | 3.668 km | 14 | Not published | July 1999 | USF Juniors, Atlantic Championship | | [Buttonwillow](https://www.trackoutline.com/guides/buttonwillow-raceway-park) | CA | 3.000 mi | 4.828 km | 23 | Either way, except the Circuit | 1995 | Not published | | [Thunderhill](https://www.trackoutline.com/guides/thunderhill-raceway-park) | CA | 2.866 mi | 4.612 km | 16 | Not published | October 1993 | Not published | | [Willow Springs](https://www.trackoutline.com/guides/willow-springs-international-raceway) | CA | 2.5 mi | 4.023 km | 9 | Not published | November 23, 1953 | Not published | | [Lime Rock](https://www.trackoutline.com/guides/lime-rock-park) | CT | 1.474 mi | 2.372 km | 7 | Not published | April 1957 | Trans-Am, NASCAR Truck | | [NJMP Thunderbolt](https://www.trackoutline.com/guides/new-jersey-motorsports-park) | NJ | 2.25 mi | 3.621 km | 13 | Not published | August 31, 2008 | MotoAmerica | | [Sonoma](https://www.trackoutline.com/guides/sonoma-raceway) | CA | 2.52 mi | 4.056 km | 12 | Not published | March 28, 1969 | NASCAR Cup | | [Homestead road](https://www.trackoutline.com/guides/homestead-miami-speedway-road-course) | FL | 2.210 mi | 3.556 km | 13 | Not published | November 3, 1995 | NASCAR Cup on the oval. | ## Buy an outline Each course in the table is a 4 inch sticker. One sticker is about $12.28 with US shipping. 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CMP: [Buy one](https://291rxa-mt.myshopify.com/cart/67705138741547:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=carolina-motorsports-park-single&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) · [Five-pack](https://291rxa-mt.myshopify.com/cart/67705141297451:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=carolina-motorsports-park-5pack&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) - Buttonwillow: [Buy one](https://291rxa-mt.myshopify.com/cart/67705141625131:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=buttonwillow-raceway-park-single&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) · [Five-pack](https://291rxa-mt.myshopify.com/cart/67705141690667:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=buttonwillow-raceway-park-5pack&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) - 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Lime Rock: [Buy one](https://291rxa-mt.myshopify.com/cart/67705147162923:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=lime-rock-park-single&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) · [Five-pack](https://291rxa-mt.myshopify.com/cart/67705147261227:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=lime-rock-park-5pack&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) - NJMP Thunderbolt: [Buy one](https://291rxa-mt.myshopify.com/cart/67705149817131:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=new-jersey-motorsports-park-single&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) · [Five-pack](https://291rxa-mt.myshopify.com/cart/67705150079275:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=new-jersey-motorsports-park-5pack&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) - Sonoma: [Buy one](https://291rxa-mt.myshopify.com/cart/67705150210347:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=sonoma-raceway-single&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) · [Five-pack](https://291rxa-mt.myshopify.com/cart/67705150570795:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=sonoma-raceway-5pack&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) - Homestead road: [Buy one](https://291rxa-mt.myshopify.com/cart/67705153126699:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=homestead-miami-speedway-road-course-single&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) · [Five-pack](https://291rxa-mt.myshopify.com/cart/67705153225003:1?utm_source=trackoutline&utm_medium=site&utm_campaign=buy&utm_content=homestead-miami-speedway-road-course-5pack&attributes%5B_to_fp%5D=to-067-agent-md-cart-attr-20261030&attributes%5B_to_ref%5D=agent-md.compare) A five-pack is five copies of one outline. [Build your 5-pack](https://www.trackoutline.com/5-pack) to mix tracks. ## Notes and sources - Sebring: Wikipedia lists the current GP course at 3.741 mi. Wikipedia pairs 6.019 km with 3.741 mi. 3.74 mi converts to 6.019 km. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Sebring_International_Raceway), [IMSA 12 Hours supplementary regulations, 2026](https://www.imsa.com/wp-content/uploads/sites/32/2026/03/11/2026-IMSA-Official-Schedule-and-SR-Sebring-12H-031126.pdf) - COTA: COTA's 2026 USGP media kit says 3.41 mi. IMSA's 14 Oct 2026 supplementary regulations say 3.4 miles. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Circuit_of_the_Americas), [COTA 2026 USGP media kit](https://circuitoftheamericas.com/wp-content/uploads/2026_F1_USGP_Official_Media_Kit_A4_FINAL.pdf) - VIR: The Wikipedia infobox lists 5.262 km. One sentence in the article lists the Full Course at 5.263 km. Wikipedia also lists a reopening in March 2000. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Virginia_International_Raceway), [IMSA VIR supplementary regulations, 2026](https://www.imsa.com/wp-content/uploads/sites/32/2026/08/12/2026-IMSA-Official-Schedule-and-SR-VIR-081226-1.pdf) - Road Atlanta: Sources: [Wikipedia](https://en.wikipedia.org/wiki/Road_Atlanta), [IMSA Petit Le Mans supplementary regulations, 2026](https://www.imsa.com/wp-content/uploads/sites/32/2026/09/23/2026-IMSA-Official-Schedule-and-SR-MPLM-092326.pdf) - Watkins Glen: IMSA's 2026 Six Hours supplementary regulations say 3.4 miles. The IndyCar racetrack list says 3.370 mi. Wikipedia dates the permanent circuit to 1956. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Watkins_Glen_International), [IMSA Watkins Glen supplementary regulations, 2026](https://www.imsa.com/wp-content/uploads/sites/32/2026/06/23/2026-IMSA-Official-Schedule-and-SR-WGI-REV-062326.pdf) - Laguna Seca: Sources: [Wikipedia](https://en.wikipedia.org/wiki/Laguna_Seca), [IMSA Laguna Seca supplementary regulations, 2026](https://www.imsa.com/wp-content/uploads/sites/32/2026/04/22/2026-IMSA-Official-Schedule-and-SR-WRLS-042226.pdf), [Wikipedia IndyCar racetracks](https://en.wikipedia.org/wiki/List_of_IndyCar_Series_racetracks) - Road America: Sources: [Wikipedia](https://en.wikipedia.org/wiki/Road_America), [Wikipedia IndyCar racetracks](https://en.wikipedia.org/wiki/List_of_IndyCar_Series_racetracks), [IMSA Road America supplementary regulations, 2026](https://www.imsa.com/wp-content/uploads/sites/32/2026/08/05/IMSA-AEC-RDAM-Provisional-Schedule-8526.pdf) - Mid-Ohio: Wikipedia's lead sentence describes the original 2.40 mi course as 15 turns. The current layout in the infobox is 13. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Mid-Ohio_Sports_Car_Course), [Wikipedia IndyCar racetracks](https://en.wikipedia.org/wiki/List_of_IndyCar_Series_racetracks), [IMSA Michelin Pilot Challenge 2026 schedule](https://www.imsa.com/michelinpilotchallenge/imsa-michelin-pilot-challenge-2026-schedule/) - Barber: Sources: [Wikipedia](https://en.wikipedia.org/wiki/Barber_Motorsports_Park), [Wikipedia IndyCar racetracks](https://en.wikipedia.org/wiki/List_of_IndyCar_Series_racetracks) - Daytona road: Wikipedia lists the current sports car course from 1985. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Daytona_International_Speedway), [IMSA Rolex 24 supplementary regulations, 2026](https://www.imsa.com/wp-content/uploads/sites/32/2026/01/23/2026-IMSA-Official-Schedule-and-SR-Daytona-24H-REV-012326-1.pdf) - Roebling: Sources: [Wikipedia](https://en.wikipedia.org/wiki/Roebling_Road_Raceway), [Roebling Road Raceway](https://www.roeblingroad.com/) - Palmer: No current national series was named on the Wikipedia page or the track information page. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Palmer_Motorsports_Park), [Palmer track information](https://palmermotorsportspark.com/TrackInfo.aspx) - CMP: Full circuit. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Carolina_Motorsports_Park) - Buttonwillow: TrackOutline sticker outline: 2.68 mi (our measurement, not a published figure). Race #13 CW. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Buttonwillow_Raceway_Park), [Buttonwillow track info](https://buttonwillowraceway.com/track-info/) - Thunderhill: East circuit on Wikipedia. The track site calls the East track a 3-mile course. Wikipedia lists 16 turns on the East circuit. The track site says 15 turns. Wikipedia says the East course reached 2.866 mi in late 1997. Former: 25 Hours of Thunderhill, 1998 to 2023. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Thunderhill_Raceway_Park), [Thunderhill Raceway Park](https://www.thunderhill.com/) - Willow Springs: Big Willow. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Willow_Springs_International_Motorsports_Park) - Lime Rock: Wikipedia says IMSA gives the track as 1.474 mi (2.372 km). The infobox still lists 1.530 mi (2.462 km). The article says a 2008 measure came out near 1.500 mi. Lime Rock calls it a 1.5-mile course. Classic layout. Lime Rock lists seven-, eight- and nine-turn layouts. Wikipedia lists 8, 9 and 10-turn options. Wikipedia says the classic layout has one left-hand turn. It does not say clockwise or counter-clockwise. Wikipedia gives both April 27 and April 28, 1957. Lime Rock says it opened in the spring of 1957. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Lime_Rock_Park), [Lime Rock Park: facility overview](https://limerock.com/drive/facility-overview/), [Lime Rock Park: history](https://limerock.com/history/) - NJMP Thunderbolt: Thunderbolt. Sources: [Wikipedia](https://en.wikipedia.org/wiki/New_Jersey_Motorsports_Park) - Sonoma: Long circuit. The IndyCar racetrack list says 2.385 mi. That IndyCar listing is 2.385 mi, not the 2.52 mi long course. Wikipedia dates the road course to March 28, 1969. The dragstrip opened March 8, 1969. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Sonoma_Raceway), [Wikipedia IndyCar racetracks](https://en.wikipedia.org/wiki/List_of_IndyCar_Series_racetracks) - Homestead road: Wikipedia lists the road course at 2.210 mi (3.556 km) and 13 turns. TrackOutline sticker outline: 2.18 mi, following the Wikimedia Commons map of this layout, which gives 2.18 mi and numbers 15 corners. Wikidata lists the opening as November 5, 1995. Former: Formula E, 2025. Sources: [Wikipedia](https://en.wikipedia.org/wiki/Homestead%E2%80%93Miami_Speedway), [Wikimedia Commons main road course map](https://commons.wikimedia.org/wiki/File:Homestead-Miami_Speedway_track_map--Main_Road_Course.svg) - CSV: https://www.trackoutline.com/guides/us-road-courses-compared.csv - HTML: https://www.trackoutline.com/guides/us-road-courses-compared - Markdown: https://www.trackoutline.com/guides/us-road-courses-compared.md ## Common questions ### Which US road course on this list is the longest? Road America, at 4.048 mi (6.515 km). Sebring is next at 3.74 mi. ### Which course is the shortest? Lime Rock, at 1.474 mi (2.372 km). Roebling is next at 2.02 mi. ### Which course has the most turns? Buttonwillow, with 23 turns on its Race #13 CW layout. COTA is next with 20. ### How many of these courses run clockwise? 7 run clockwise and 3 run counter-clockwise (COTA, Laguna Seca, and Daytona road). Palmer and Buttonwillow (except the Circuit) can run either way. The other 8 have no published direction. ### Which course is the oldest? Sebring, which opened on December 31, 1950. Willow Springs is next. It opened on November 23, 1953.