Here is a primer for the 24 at Daytona this weekend (also known as the Rolex 24 Daytona in deference to the provider of the traditional* prize of a watch to class winners).

Where can I watch/listen to it?

Motors TV and Speed have TV coverage for Europe and the USA respectively. Magnus Racing (one of the GT teams, running car #4) will have an on-board camera accessible via the internet all race. Please consult your TV listings if you live elsewhere and post if you are in a position to augment or correct my information.

Where is it?

The race is held at a tri-oval with infield section called the Daytona International Speedway, in Florida, USA. It is 5 hours behind GMT. The track is 3.56 miles long, with very fast corners (aided by the 31-degree banking) and somewhat trickier (but still fast) final sector.

How old is it?

The 24 at Daytona celebrates its 50th birthday this year, having run a race every year since 1962. It has "only" been 24 hours long since 1967, which is still long enough to be considered one of the three races in the Triple Crown of endurance racing (albeit Petit Le Mans is sometimes substituted for it).

Points situation?

It's the first race of the Grand-Am season, so nobody has any points at the moment. Many of the entries have no intention of completing the whole season, but some will complete the 13-race calendar. For those doing so, the points on offer go from 35 for the winner to 1 for 30th place. Only finishing positions score points.

Who and what is in it?

The entry list is divided into prototypes (which are all a Grand-Am specific class called Daytona Prototypes) and GT cars (which are also a Grand-Am specific class, similar to GT3s in performance level). It's a very long list, so I will simply provide a link to the full list and highlight some names who may do well.

Prototypes

#01 Chip Ganassi Racing with Felix Sabates, BMW-Riley (Hand, Pruett, Rahal, Rojas)
#02 Chip Ganassi Racing with Felix Sabates, BMW-Riley (Dixon, D Franchitti, McMurray, Montoya)

Chip Ganassi has raced at Daytona for 7 years, with Scott Pruett having been there since the beginning. It won the 24-hour race last year as well as in 2007 and has three championships under its belt in this series. It is difficult to find any weak link in this team, though Corvette is providing strong competition.

#2 Starworks Motorsport, Ford-Riley (Hunter-Reay, Kanaan, M Potolicchio, Scala, Viso)
#8 Starworks Motorsport, Ford-Riley (Dalziel, Luhr, McNish, Popow, E Potolicchio)

Starworks is running a pair of grandfathered cars this year, in contrast to the likes of SunTrust (car #10) who have a 2012-spec car. In testing, the #2 had the fastest grandfathered car in the "Roar Before the 24" test. Allan McNish of Audi is in #8, while the #2 car is full of Indycar stars.

Sadly the #2 StarWorks has since been withdrawn.

#10 SunTrust, Corvette DP (Taylor, Angelelli, Briscoe)

By some margin the fastest prototype overall (though not the holder of its fastest lap), SunTrust has clearly learned the Daytona circuit well. Keep a close eye on SunTrust as it is arguably the strongest contender for the overall win.

#60 Michael Shank Racing with Curb-Agajanian, Ford-Riley (Allmedinger, Negri, Pew, Wilson)

Like the #2 Starworks, this car is full of Indycar experts. Michael Shank Racing has previously qualified on pole in Daytona, back in 2008.

#76 Krohn Racing, Ford-Lola (Braun, Jonsson, T Krohn, Zonta)

Nic Jonsson turned the fastest lap of the "Roar Before the 24" test, suggesting that Krohn will be extremely quick in qualifying. He and Tracy Krohn teamed up to great effect in the GTE-Am class of ILMC last year, while Ricardo Zonta is an ex-F1 driver.

GT cars

#03 Extreme Speed Motorsports Ferrari 458 (Brown, Cosmo, Sharp, van Overbeek)

It's the first time the Ferrari 458 has been used at Daytona and it is proving to be a very quick car in Daytona configuration. Ed Cosmo produced the fastest GT lap of the final day. Extreme Speed hasn't done Daytona before but it is already a very strong prospect.

#45 Flying Lizard Motorsports with Wright Motorsports, Porsche GT3 (Bergmeister, P Long, Neiman, Rockenfeller)

Last year, Flying Lizard took overall pole and second place in the race with a prototype. In GT they will be with a car they are even more familiar with, making them a big threat for the top positions. Mike Rockenfeller will be familiar to most sportscar fans from his work at Audi. His talents will be complemented by Joerg Bergmeister and Patrick Long, who drove commendably for Flying Lizard in ILMC last year. The weak link is likely to be Seth Neiman, but even so, car #45 should not be lightly discounted.

#48 Paul Miller Racing, Porsche GT3 (Bell, Maarsen, Miller, Wilkins)

Rob Bell impressed enormously at JMW last year and his addition to the squad will help it a lot. The others are experienced at Daytona. Expect car #48 to run quietly under the radar and surprise with a good result at the end of the race.

#51 APR Motorsport, Audi R8 Grand-Am (Baas, Canache, Norman, Pirro, Moltke)

APR Motorsport has two things in its favour; the Audi R8 (as a new car to this category, a surprise could be sprung) and the evergreen skill of Emanuele Pirro. The car will probably run in the back half of the grid most of the time but have some spectacular stints from Pirro to enliven the race.

#55 AF Waltrip, Ferrari 458 (Augas, Kauffman, Pastrana, Waltrip)

European powerhouse AF Corse and Michael Waltrip team up with 24H Le Mans team-mate Rob Kauffman. Expect Rui Augas, who raced well in GTE-Am ILMC last year, to be quick. It is not yet clear how fast Travis Pastrana will be, but this year is mostly a learning experience for the AF Waltrip alliance.

#59 Brumos Racing, Porsche GT3 (Davis, Haywood, Keen, Lieb)

Brumos is a highly experienced squad, with all four of its drivers having done the race in its car last year. They carry the confidence born of winning the Grand-Am championship last year. Marc Lieb is one of the fastest GT drivers in ILMC and Leh Keen is doing very well in GTC. Hurley Haywood is doing his 40th and final Daytona, so it would be good to see him and his team-mates have a great race to remember.

#62 Risi Competizione, Ferrari 458 (Bruni, Fisichella, Matos)
#63 Risi Competizione, Ferrari 458 (Beretta, Bertolini, Vilander)

Risi Competizione hasn't visited Daytona in over a decade, not that anyone would have known from looking from the timesheets. Toni Vilander produced the fastest GT lap of the entire test. The Risis have been slightly inconsistent, but much of this is due to three of its six drivers having never driven in a Daytona race before. By race day, expect both cars to be up there with the best. Each car is only going to use three drivers in a race that normally uses four, but everyone in the squad is experienced either with Daytona or Le Mans' 24-hour races, so fatigue shouldn't pose a significant problem.

#64 TRG, Porsche GT3 (Ardagna, Costobal, Da Guida, Orjuela, Salazar)
#66 TRG, Porsche GT3 (Farnbacher, Keating, Pilet, Simonsen)
#67 TRG, Porsche GT3 (Bertheau, Bleekemolen, Goosens, Henzler, Pumpelly)

The record of TRG is excellent at Daytona. They've put 5 cars into the race, 3 of which are likely to be of particular interest. The #66 TRG has got the core of the old Spyker GT2 team in its driving squad, plus Patrick Pilet from the IMSA Performance Matmut team. This balanced squad should help it do well in the race. The #67 TRG also has a high-quality driver line-up, ranging from Jeroen Bleekemolen (one of the stand-out talents in GTC last year) to Wolf Henzler, who was in a huge variety of GT races last year and did respectably well in all of them. While the #64 TRG probably won't be as quick as either, it does feature ex-F1 racer Eliseo Salazar.

#70 Speedsource, Mazda RX-8 (Bomarito, M Franchitti, Hinchcliffe, Tremblay)

Marino Franchitti knows sportscars well and will be the key to this car's speed. Promising Indycar driver Jamie Hinchcliffe has joined in and the other two drivers are experienced with the Mazda RX-8. They've looked pretty good throughout the "Roar Before the 24" test.

#88 Autohaus Motorsports, Camaro GT.R (Edwards, Marsh, Milner, Taylor)

Autohaus is a strong team that came 2nd in the Grand-Am championship last year. The only car out of those I've highlighted to be using the Camaro GT.R, the balanced line-up is likely to be strong.

#93 Turner Motorsport BMW GT3 (Auberlen, Dalla Lana, Marsal, D Muller, J Muller)
#94 Turner Motorsport BMW GT3 (Auberlen, Dalla Lana, Johnson, Said, Werner)

While there are BMWs in the prototype race, this is the place to look for the drivers who previously competed in the ILMC and ALMS series. There is a lot of talent here. Granted, many of the drivers don't have Daytona experience, but they are all likely to learn the ropes quickly. Also, the Auberlen and Dalla Lana mentions are not typos; in Grand-Am, drivers are allowed to swap cars if entered for both, provided drivers doing so only take points for the first car they drove out of those listed.

* - I say "traditional" but it's only been awarded since 1991, the point where Rolex began the sponsorship.