De 24 uur van Daytona 1985 was de 23e editie van deze endurancerace. De race werd verreden op 2 en 3 februari 1985 op de Daytona International Speedway nabij Daytona Beach, Florida.

De race werd gewonnen door de Henn's Swap Shop Racing #8 van A.J. Foyt, Bob Wollek, Al Unser sr. en Thierry Boutsen. Voor Foyt en Wollek was het hun tweede Daytona-zege, terwijl Unser en Boutsen hun eerste overwinning behaalden. De GTO-klasse werd gewonnen door de Roush Racing #65 van Wally Dallenbach jr., John Jones en Doc Bundy. De Lights-klasse werd gewonnen door de Mid-O/Rusty Jones #93 van Kelly Marsh, Ron Pawley en Don Marsh. De GTU-klasse werd gewonnen door de Team Highball #71 van Amos Johnson, Jack Dunham en Yojiro Terada.

Race Winnaars in hun klasse zijn vetgedrukt.

Pos. Klasse No. Team Coureurs Chassis Ronden 1 GTP 8 Henn's Swap Shop Racing A.J. Foyt Bob Wollek Al Unser sr. Thierry Boutsen Porsche 962 703 2 GTP 14 Holbert Racing Al Holbert Al Unser jr. Derek Bell Porsche 962 686 3 GTP 67 BFGoodrich Jim Busby Rick Knoop Jochen Mass Porsche 962 674 4 GTP 5 Bob Akin Motor Racing Hans-Joachim Stuck Bob Akin Paul Miller Porsche 962 670 5 GTP 7 Bob Akin Motor Racing Jim Mullen Kees Nierop Ray McIntyre Porsche 935 668 6 GTP 2 Leon Bros. Racing Skeeter McKitterick Terry Wolters Art Leon March 84G 654 7 GTP 1 Leon Bros. Racing Bill Whittington Randy Lanier Al Leon March 85G 652 8 GTO 65 Roush Racing Wally Dallenbach jr. John Jones Doc Bundy Ford Mustang 637 9 GTP 9 Personalized Autohaus Jack Newsum Wayne Baker Chip Mead Ren Tilton Porsche 935 624 10 Lights 93 Mid-O/Rusty Jones Kelly Marsh Ron Pawley Don Marsh Argo JM16 602 11 GTO 53 Mandeville Auto/Tech Danny Smith Tom Waugh Diego Febles Mazda RX-7 599 12 GTU 71 Team Highball Amos Johnson Jack Dunham Yojiro Terada Mazda RX-7 599 13 Lights 63 RGP 500 Racing Jim Downing John Maffucci Yoshimi Katayama Argo JM16 599 14 GTO 09 901 Shop Mike Schaefer Peter Uria Jack Refenning Larry Figaro Porsche 911 Carrera RSR 586 15 GTO 90 Road Circuit Tech Les Delano Andy Petery Tommy Riggins Pontiac Firebird 578 16 GTO 21 Gopher Motion Steve Cohen Don Walker William Gelles Ferrari 512 567 17 GTP 6 Morgan Performance Charles Morgan Bill Alsup Jim Miller Royale RP40 564 18 GTU 42 Mike Meyer/Daffy SWR Scott Pruett Paul Lewis Joe Varde Mazda RX-7 558 19 GTU 99 All American Racers Chris Cord Dennis Aase Toyota Celica 533 20 GTO 92 OMR Engines Chris Gennone Fern Prego Hoyt Overbagh Lewis Fuller Chevrolet Camaro 516 DNF GTP 11 Kendall Racing Chuck Kendall Peter Fitzgerald John Hotchkis Porsche 935 512 22 GTP 30 Momo Corse Gianpiero Moretti Jim Trueman Massimo Sigala Alba AR5 505 23 Lights 37 Aerex Manufacturing Peter Welter Nick Nicholson Tom Burdsall Tiga GT284 501 24 GTO 96 Allan Moffat Racing Allan Moffat Gregg Hansford Kevin Bartlett Peter McCloud Mazda RX-7 482 25 GTU 94 49th Star Racing William Pfalf Skip Winfree Wally Hopkins Porsche 911 477 26 GTO 73 Wolf Engines Clark Howey Dale Koch Tracy Wolf Chevrolet Camaro 467 27 GTO 78 Raul Garcia Raul Garcia Eugenio Matienzo Pontiac Firebird 454 28 GTP 3 Pegasus Racing Bobby Allison Wayne Pickering Ken Madren March 84G 437 29 GTO 83 K&P Racing William Wessel Robert Whitaker Mark Kennedy Karl Keck Chevrolet Corvette 436 30 GTO 43 Starved Rock Lodge Rusty Schmidt Scott Schmidt Max Schmidt Chevrolet Corvette 413 DNF GTO 35 Team Dallas M. L. Speer Bobby Hefner Jack Griffin Porsche 911 Carrera RSR 395 DNF GTP 15 Kalagian Racing John Kalagian John Lloyd Tom Grunnah March 84G 394 DNF GTP 33 Bo-And Racing Richard Anderson Bard Boand Mike Brummer Lola T600 373 34 GTO 22 Walter Johnston Del Russo Taylor John Hayes-Harlow Bob Lee Pontiac Firebird 351 35 GTU 49 Conrad Racing Albert Naon jr. Dennis Vitolo Fernando Garcia Porsche 911 336 DNF GTP 45 Conte Racing John Paul jr. Bill Adam Whitney Ganz March 85G 330 DNF GTO 80 Lindley Motor Ltd. Neil Bonnett Jim Derhaag Les Lindley Chevrolet Camaro 295 DNF GTO 72 Centurion Auto Trans Harold Shafer Tom Nehl Kent Painter Chevrolet Camaro 283 DNF GTO 29 Southern Racing Promins Gary Baker Robin McCall Joe Ruttman Chevrolet Corvette 281 DNF GTP 0 Kreepy Krauly Racing Sarel van der Merwe Tony Martin Ian Scheckter March 84G 260 DNF GTO 38 Mandeville Auto/Tech Takashi Yorino Logan Blackburn Roger Mandeville Mazda RX-7 220 DNF GTU 81 Mosler Racing Steve Alexander Joe Hill George Alderman Ferrari 308 GTB/GTS 219 DNF GTO 89 Scorpio Racing Jamsal Eduardo Galdamez Anbagua Porsche 934 217 DNF GTU 55 Preston & Son Enterprises Robert Peters George Schwarz Andre Schwarz Mazda RX-7 214 DNF GTU 76 Malibu Grand Prix Jack Baldwin Ira Young Jeff Kline Mazda RX-7 205 DNF GTP 44 Group 44 Brian Redman Bob Tullius Hurley Haywood Jaguar XJR-5 203 DNF GTU 57 Zwiren Racing Steve Zwiren Tony Pio Costa Mike Allison Wes Donnington Mazda RX-7 188 DNF GTP 31 Goral Racing Hugo Gralia Emory Donaldson Paul Goral Porsche 935 183 DNF GTO 51 Mosler Racing John McComb Rick Mancuso Fred Fiala Ferrari 512 BB 171 DNF GTU 17 Al Bacon Racing Al Bacon Charles Guest Steve Millen Mazda RX-7 170 DNF GTP 4 Lee Racing Lew Price Carson Baird Billy Hagan Terry Labonte Lola T711 160 DNF GTP 29 DeAtley Motorsports Michael Roe Tommy Byrne Darin Brassfield March 84G 159 DNF GTP 95 Van Every Racing Lance van Every Ash Tisdelle Jack Refenning Porsche 935 157 DNF GTO 06 Roush Racing John Bauer Jim Miller Willy T. Ribbs Ford Mustang 157 DNF GTP 04 Group 44 Claude Ballot-Léna Jim Adams Chip Robinson Jaguar XJR-5 154 DNF GTU 60 Hobbit Racing Tony Swan Bob Ruth Steve Dietrich Mazda RX-7 150 DNF GTO 54 Dave Heinz Imports Dave Heinz Dave Barnett Jerry Thompson Chevrolet Corvette 138 DNF GTO 66 Bob Beasley Bob Beasley Jack Lewis Chuck Grantham Porsche 911 Carrera RSR 118 DNF GTP 68 BFGoodrich Pete Halsmer Dieter Quester John Morton Porsche 962 107 DNF GTP 86 Bayside Disposal Racing Bruce Leven Henri Pescarolo Thierry Boutsen Porsche 962 101 DNF GTO 97 Scyphers-Ankor Racing Billy Scyphers Allen Glick Bill Cooper Chevrolet Corvette 99 DNF GTP 25 Red Lobster Racing Kenper Miller Dave Cowart Mauricio de Narváez March 83G 92 DNF GTU 87 Performance Motorsports Elliott Forbes-Robinson John Schneider Don Istook Porsche 924 Carrera GTR 89 DNF GTO 58 Coin Operated Racing Jim Torres Don Kravig Michael Hammond Porsche 934 86 DNF GTU 13 Rubino Racing Frank Rubino Dennis Wagoner Ken Knott Mazda RX-7 67 DNF GTP 20 Spirit of Cleveland Freddy Baker Don Herman Rich Maher Richard Silver Porsche 935 62 DNF GTO 70 Ormond Racing Don Cummings Craig Rubright Greg Walker Chevrolet Corvette 58 DNF GTP 07 LSJ Racing Lyn St. James Tim Coconis Eric Lang Argo JM16 54 DNF GTU 08 Paul Romano Drake Olson Steve Potter Willard Howe Mazda RX-7 45 DNF GTU 77 Championship Motorsports Don Wallace John Petrick Don Sikes Mazda RX-7 36 DNF GTO 47 Dingman Bros. Racing Walt Bohren Ron Bouchard Billy Dingman Pontiac Firebird 35 DNF GTO 41 Unlimited Telephones Luis Sereix Ralph Noseda Pontiac Firebird 28 DNF GTU 84 Clay Young Clay Young Pontiac Fiero 21 DNF GTP 16 Henn's Swap Shop Racing Harald Grohs Jean-Louis Schlesser Preston Henn Walter Brun Porsche 935 15 DNF GTP 61 Team USA/Deco Sales Steve Shelton Don Courtney Brent O'Neill Royale RP40 14 DNF GTU 74 Whitehall Motorsports Paul Gentilozzi Kent Hill Austin Godsey Bobby Akin Porsche 924 Carrera GTR 12 DNS GTP 88 Bayside Disposal Racing Bruce Leven Henri Pescarolo Thierry Boutsen Porsche 962 0 DNS GTP 19 Performance Motorcar Jack Miller Carlos Ramirez Bruce Redding Nimrod NRA/C2 0 DNS GTO 64 Rene Rodriguez Ernesto Soto Rene Rodriguez Chevrolet Corvette 0 DNS GTP 05 Hi-Tech Racing Tico Almeida Miguel Morejon Porsche 935 0 DNS GTU 00 Jim Logan Jim Logan Graham McRae Leonard Yanke Dodge Daytona 0 DNS GTU 27 Paul Fortner Russell Gossett Gary Stephens Paul Wolfe Datsun 280Z 0 DNS GTP 85 Ralph Sanchez Racing Emerson Fittipaldi Tony Garcia Mauricio de Narváez March 85G 0 DNQ GTO 24 Kreider Racing Dale Kreider Roy Newsome Chevrolet Camaro 0 DNQ GTU 34 El Salvador Racing Alfredo Mena George Drolsom Porsche 924 Carrera GTR 0 DNQ GTU 02 RNGC Racing Dale Kreider Roy Newsome Mazda RX-7 0 DNQ GTO 23 Import Restoration Alan Howes Paul Reisman Bob Hebert Porsche 911 Carrera RSR 0 DNQ GTO 69 John Hofstra John Hofstra Charles Slater Porsche 911 Carrera RSR 0 DNQ GTU 79 Whitehall Motorsports Tom Winters Bob Bergstrom John Casey Porsche 924 Carrera GTR 0

1985 Daytona