Schedule



March 24-25, 2023.     URA/CSRADes Moines, IAIowa Horse Fair RodeoRogue RodeoAdded Money: $700BB, SB; $1,000BR; $400 TEEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: March 13Books Rough Stock & Steer Wrestling 515-681-4626Books For all other Timed Events: 515-975-9110All books open from 6:30-8:30pmPerf: 7pm; Slack to follow with barrels first in slackNOTE: Health Papers are required and will be checked.Emergency #: 515-681-4626Location: Jacobsen Building, Iowa State Fairgrounds
May 11-12, 2023 (Thurs/Fri) URA/MRCABolivar, MOMissouri Beef Days RodeoC.R. McKellips RodeoAdded Money: $1,000 per event$60 RS; $80 TE; $67 GBR; $97 DTRBooks Open Thurs May 4    10am-3pmEntry Number: (417)876-2353Perf: 7 P.M.Location: Polk County FairgroundsDirections: 100th rd Boivar, MOAdditional Info: There will be a Contestant and Buddy Hospitality. Slack following the performances once they are full.
May 19-20, 2023    URA/MRCABurlingame, KS52nd Annual Burlingame Saddle Club RodeoHigh Stakes Rodeo Co.Added Money: $400RS; $300TEEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: May 15   6pm-10pmEntry Number: 660-489-2258Rough Stock can enter twiceNEW:  Champion buckles in each eventPerf:  7pmEmergency Number:  816-215-3391
May 27-28, 2023 URA/MRCA/IRCAMilan, MOMilan Old Timers RodeoC.R. McKellips RodeoAdded Money: $750 RS; $325 all other eventsEntry Fees:   $62 RS; $82 TE  $69GBR; $99 DTRBooks Open: May 17    10am-3pmEntry Number: (417)876-2353Perf: 7 P.M.Location: Sullivan Co FairgroundsDirections: MO-5 Milan, MO
June 2-3, 2023    MRCA/URA/ACRALicking, MOLicking Chamber of Commerce RodeoOutlaw 5J RodeoAdded Money:  $1,000RS; $800TEEntry Fees:  $72RS; $82TE; $69GBR; $99DTRBooks Open:  May 24   6pm-10pmEntry Number:  573-875-1348Perf:  7 pmRanch Broncs $200 added per night
June 1-3, 2023 URA/MRCA/ACRANevada, MOVernon Co Fair RodeoC.R. McKellips RodeoAdded Money: $350 all eventsEntry Fees:  $62 RS; $82TE; $69 GBR; $99 DTRBooks Open: May  24 by  10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location: Vernon Co FairgroundsDirections: 1679 E Ashland St Nevad a, MO
June 9, 2023.     URA/IRCAOsceola, IAWright RodeoAdded Money: $300 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online May 30-June 1 3pm: Phone June 1 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: June 2-5  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7:30Clarke County FairgroundsEmergency #: 641-414-0077Camping $10 per night without electrical; $15 with electrical
June 9-10, 2023 MRCA/URA/ACRACarthage, MO​​​​​​​Carthage 46th Annual Stampede RodeoC.R. McKellips RodeoAdded Money: $500 all eventsEntry Fees:   $71 RS; $81 TE ; $68 GBR; $98 DTRBooks Open: May  31       10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location: Carthage Saddle Club ArenaDirections: 521 Robert Ellis Young Dr Carthage, MO
June 9-10, 2023    MRCA/URA/IRCALaBelle, MO73rd Annual LaBelle RodeoOutlaw 5J RodeoAdded Money:  $800RS; $400TEEntry Fees:  $72RS; $82TE; $69GBR; $99DTRBooks Open:  May 31   6pm-10pmEntry Number:  573-875-1348Perf:  8pm

June 10, 2023.        URA/IRCAOsceola, IAWright RodeoAdded Money: $300 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online May 30-June 1 3pm: Phone June 1 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: June 2-5  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7:30Clarke County FairgroundsEmergency #: 641-414-0077Camping $10 per nihgt without electrical; $15 with electrical
June 15-16, 2023      URA/MRCA
Gardner, KS
Rodeo GoldAbdallah Shriners RodeoAdded Money: $500 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: June 7     6pm-9pmEntry #: 913-837-0745BUCKLES TO EVENT WINNERSJohnson Co. FairgroundsPerf:  7:30pmEmergency #: 913-636-9573
June 16-17, 2023     IRCA/URAAdel, IAWright RodeoAdded Money: $300 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online June 7-8  3pm: Phone June 8 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: June 9-12 5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7:30Dallas Co. FairgroundEmergency #: 641-414-0077Camping $10 per night without electrical; $15 with electrical
June 16-17, 2023 URA/MRCA/ACRAAurora, MO​​​​​​​Rocking A Saddle Club RodeoC.R. McKellips RodeoAdded Money: $500 all eventsEntry Fees:  $62 RS; $82 TE; $69 GBR; $99 DTRBooks Open: Wed June 7  10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location: Rocking A Saddle Club ArenaDirections: 1207 E Church St, Aurora, MO
June 16-17, 2023   URA/MRCAHigbee, MOTNT Rodeo Co.Added Money: $300 per eventEntry Fees:  $60RS; $80TE; $67GBR; $97DTRBooks Open: June 5   5pm-9pmEntry #: 573-881-3795Perf: 7 pm102 Railroad St.From 63 Hwy turn onto state Hwy B drive 8.6 milesTurn right staying on Hwy B for 1.4 milesFairgrounds will be off of Railroad St.Emergency #: 573-881-3795
June 21, 2023 MRCA/URACorder, MO​​​​​​​Corder Picnic RodeoC.R. McKellips RodeoAdded Money: $300 all eventsEntry Fees:  $60 RS; $75 TE ; $62 GBR; $92 DTRBooks Open: Wed June 21     10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location: Corder City Park
June 23-24, 2023 URA/MRCAHolden, MOHolden Chamber of Commerce RodeoC.R. McKellips RodeoAdded Money: $400 RS; $300 all other eventsEntry Fees: $60 RS; $80 TE ; $67 GBR; $97 DTRBooks Open: Wednesday June 14     10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location: Holden Saddle Club ArenaDirections: 301 E 10th St, Holden, MO
June 24-25,2023    URA/IRCALake City, IAWright RodeoAdded Money: $500 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online June 17-18 3pm: Phone June 18 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: June 19-20  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: Sat: 7:30   Sunday  6pm618 W. Franklin St.Emergency #: 641-414-0077
July 1, 2023      URA/MRCA
Louisburg, KS
Rodeo GoldLouisburg StampedeAdded Money: $300 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: June 21     6pm-9pmEntry #: 913-837-0745Lewis & Young ParkPerf:  7:30pmEmergency #: 913-636-9573
July 1-2, 2023    IRCA/URAOttumwa, IAOutlaw/5J RodeoAdded Money:  $300 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBareback & Saddle Bronc Enter TwiceBooks Open: June 21     6pm-10pmEntry #: 573-875-1348Perf:  7pmEmergency #: 573-470-6888

July 2-4 , 2023  IRCA/URABloomfield, IAWright RodeoAdded Money: $550 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online June 21-22 3pm: Phone June 22 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: June 23-27 5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7:30pm618 W. Franklin St.Emergency #: 641-414-0077
July 3-4, 2023 URA/MRCAHepler, KSHepler Ruritarian RodeoC.R. McKellips RodeoAdded Money: $300 all eventsEntry Fees: $60 RS; $80 TE; $67 GBR; $97 DTRBooks Open: Monday June 26      10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location: Hepler, KS Rodeo ArenaDirections:105 Hwy 3 Hepler, KS
July 7, 2023 URA/MRCAMarshall, MOSaline Co Fair RodeoC.R. McKellips RodeoAdded Money: $500 all eventsEntry Fees:   $60 RS; $80 TE ; $67 GBR; $97 DTRBooks Open: Monday June 26       10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location: Saline Co FairgroundsDirections: 2707 S Hwy 65 Marshall, MO
July 8. 2023 IRCA/URADayton, IAWright RodeoAdded Money: $600RS; $300TEEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online June 28-29  3pm: Phone June 29 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: June 30-July 3  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7pm: Des. Slack 11am24 W. Skillet$15 camping feeEmergency #: 641-414-0077
July 7-8, 2023   URA/MRCAIndian Grove, MOTNT Rodeo Co.Added Money: $300 per eventEntry Fees:  $60RS; $80TE; $67GBR; $97DTRBooks Open: June 27   5pm-9pmEntry #: 573-881-3795Perf: 8pmFrom Indian Grove turn west on Hwy M then 2-3 miles North on Rodeo Ave.Emergency #: 573-881-3795
July 13, 2023.    IRCA/URAEagle Grove, IAWright RodeoAdded Money: $300 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online July 5-6  3pm: Phone July 6 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: July 7-9  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7:30pm1000 E. BroadwayEmergency #: 641-414-0077
July 14, 2023   IRCA/URAJefferson, IAWright RodeoAdded Money: $300 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online July 5-6  3pm: Phone July 6 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: July 7-9  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7pm601 E. Lincoln WayEmergency #: 641-414-0077
July 14-15, 2023 URA/MRCAPleasant Hill, MOCass Co Fair RodeoC.R. McKellips RodeoAdded Money: $350 all eventsEntry Fees:  $60 RS; $80 TE; $67 GBR; $97 DTRBooks Open: Wednesday July 5       10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location: Cass Co FairgroundsDirections: 58 Hwy Pleasant Hill, MO
July 14-15, 2023  URA/IRA/Mid-StatesFremont, NEJohn C. Fremont Days RodeoRodeo RoseAdded Money:  $600 RS;  $300 TEEntry Fees: $62RS; $82TE; $69GBR; $99DTRMixed Team Roping $150 addedBooks Open: July 5  10am-2pmEntry Number:  785-806-4015Perf: 7:30pmEmergency #: 785-806-4015

July 15, 2023.  IRCA/URAAudubon, IAWright RodeoAdded Money: $300 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online July 5-6  3pm: Phone July 6 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: July 7-9  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7 pm400 N. Division St.Emergency #: 641-414-0077
July 15, 2023   URA/MRCAMacon, MOTNT Rodeo Co.Added Money: $300 per eventEntry Fees:  $60RS; $80TE; $67GBR; $97DTRBooks Open: July 5   5pm-9pmEntry #: 573-881-3795Perf: 7 pmOff 63 turn on County Park Dr.Emergency #: 573-881-3795
July 16, 2023.   IRCA/URAGreenfield, IAWright RodeoAdded Money: $300 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online July 9-10  3pm: Phone July 10 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: July 11-12  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7 pm: Des. Slack  2pm1000 E. BroadwayEmergency #: 641-414-0077
July 19, 2023 URA/MRCATracy, MOPlatte Co Fair RodeoC.R. McKellips RodeoAdded Money: $400 all eventsEntry Fees:  $60 RS; $80 TE; $67 GBR; $97 DTRBooks Open: Wednesday July 12      10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location:Platte Co FairgroundsDirections: 1530 Fairgrounds Rd Tracy, MO
July 20-21, 2023      IRCA/URA/IRAWinterset, IADuckworth RodeoAdded Money: $800RS; $400TEEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: July 9:  Text 8-5: Phone: 5-7Entry #: 641-344-5403Ranch Broncs: $30 EF, $400 addedPerf: 8pmEmergency #: 41-344-5403Madison County Fair Grounds
July 20-22., 2023    URA/IRCALenox, IAWright RodeoAdded Money: $1,100 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online July 9-10 3pm: Phone July 9 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: July 11-16  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7:30pmEmergency #: 641-414-0077
July 24-25, 2023.    URA/IRCAAfton, IAWright RodeoAdded Money: $400RS; $300TEEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online July 17-18  3pm: Phone July 18 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: July 19-20-  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7 pmEmergency #: 641-414-0077
July 29, 2023     IRCA/URAWaverly, IAWright RodeoAdded Money: $400 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online July 17-18  3pm: Phone July 18 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: July 19-20-  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7 pmEmergency #: 641-414-0077
Aug 2-3, 2023 URA/MRCA/ACRAGirard, KSCrawford Co Fair RodeoC.R. McKellips RodeoAdded Money: $350 all eventsEntry Fees:  $62 RS; $82 TE; $69 GBR; $99 DTRBooks Open: Wednesday July 26       10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location: CrawfordCo FairgroundsDirections: 249 E 47 Hwy Girard, KS
Aug. 3, 2023      MRCA/URA
Gardner, KS
Rodeo GoldJohnson Co. Fair RodeoAdded Money: $300 per eventEntry Fees: $55RS; $75TE; $62GBR; $92DTRBooks Open: July 26     6pm-9pmEntry #: 913-837-0745Johnson Co. FairgroundsPerf:  7:30pmEmergency #: 913-636-9573
Aug. 4-5, 2023   IRCA/URAMaxwell, IAWright RodeoAdded Money: $500 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online July 26-27  3pm: Phone July 1275pm-8pmClick here for online entries Phone: 641-766-6401Call back: July 28-30  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7:30 pmEmergency #: 641-414-0077
Aug. 4-5, 2023 URA/MRCAHume, MOHume Fair RodeoC.R. McKellips RodeoAdded Money: $300 all eventsEntry Fees:  $60 RS; $80 TE; $67 GBR; $97 DTRBooks Open: Wednesday July 26      10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.
August 10-12, 2023 MRCA/URASedalia, MO​​​​​​​Show Me State RodeoC.R. McKellips RodeoAdded Money: $500 all eventsEntry Fees:   $70 RS; $80 SW, TD, O/40, BAW; $67 GBR; $97 DTRBooks Open: Mon July 30  10am-3pmEntry Number: (417)876-2353Perf: 7 P.M.Location: Missouri State Fairgrounds (Everyone pays Fair Admission!!)Directions: 2503 W 16th St Sedalia, MOAdditional Info: STATE VET WILL BE CHECKING COGGINS. EVERYONE MUST HAVE THEM. OUT OF STATE HORSES MUST HAVE HEALTH PAPERS AS WELL. There will be an exceptional rodeo Friday morning at 9AM for any contestant that can volunteer to help. Anyone entering the fairgrounds/arena will have to pay daily fair admission and sign a release waiver. Camping available Thurs and Fri night for $10/night. No camping allowed Saturday night. SLACK IS ONLY ON THURS AND FRI NIGHTS AND WILL BE TAKEN ONCE THE PERFS ARE FULL.
Aug. 18-19, 2023.    IRCA/URAAdel, IAWright RodeoAdded Money: $300 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online Aug. 9-10  3pm: Phone Aug. 10 5pm-8pmClick here for online entries Phone: 641-766-6401Call back: Aug. 11-14  5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 7:30 pmEmergency #: 641-414-0077
Aug. 18-19, 2023 URA/MRCAElDorado Springs, MOLand O Lakes RodeoC.R. McKellips RodeoAdded Money: $300 all eventsEntry Fees:  $60 RS; $80 TE; $67 GBR; $97 DTRBooks Open: Monday, Aug. 7th      10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.3390 E. 380 Rd.
Aug. 26, 2023    IRCA/URANevada, IAWright RodeoAdded Money: $800 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: online Aug. 16-17  3pm: Phone Aug. 17  5pm-8pmClick here for online entries Phone: 641-766-6401Call back: Aug. 18-22 5pm-7pmBareback & Saddle Bronc option to enter twiceNovice bareback & Saddle Bronc: $25 EF: $100 addedPerf: 6:30 pmEmergency #: 641-414-0077
Sept. 1-2, 2023 URA/MRCAWarsaw, MOBenton County RodeoC.R. McKellips RodeoAdded Money: $400 Rough Stock: $300 Timed EventsEntry Fees:  $60 RS; $80 TE; $67 GBR; $97 DTRBooks Open: Wednesday Aug. 23rd      10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.915 Main St, behind Osage Mini Mart
Sept. 2-3, 2023      URA/MRCA
Eskridge, KS
Rodeo GoldAdded Money: $350 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: Aug. 23     6pm-9pmEntry #: 913-837-0745Perf:  7:30pmEmergency #: 913-636-9573
SEPT 8-9, 2023 MRCA/URAWarrensburg, MO​​​​​​​Johnson Co Fair RodeoC.R. McKellips RodeoAdded Money: $500 all eventsEntry Fees:  $70 RS; $80 TE; $67 GBR; $97 DTRBooks Open: Wed Aug 30      10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location:Johnson Co FairgroundsDirections: 386 NW 145 Rd Warrensburg, MO
Sept. 15-16, 2023      MRCA/URA
East Lynne, MO
Rodeo GoldAdded Money: $300 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: Sept. 6    6pm-9pmEntry #: 913-837-0745Perf:  7:30pmEmergency #: 913-636-9573
Sept. 22-23, 2023      MRCA/URA
Green Ridge, MO
Rodeo GoldGreen Ridge Patriot RodeoAdded Money: $500 per eventEntry Fees: $60RS; $80TE; $67GBR; $97DTRBooks Open: Sept. 13    6pm-9pmEntry #: 913-837-0745Jennings ArenaPerf:  7 pmEmergency #: 913-636-9573

September 23-24, 2023 URA/MRCA/ACRAFair Grove, MOCowboy Church Fall RodeoC.R. McKellips RodeoAdded Money: $300 all eventsEntry Fees:  $62 RS; $82 TE; $69 GBR; $99 DTRBooks Open: Wednesday Sept 13    10am-3pmEntry Number: (417)876-2353Perf: Sat 5PM Sunday 4PMLocation: Fair Grove, MODirections: 331 W Saddle Club Rd Fair Grove, MO
September 29-30, 2023 URA/MRCA/ACRAChanute, KSChanute Bit & Spur Saddle Club RodeoC.R. McKellips RodeoAdded Money: $500 RS, SW, TD, GBR, BAW; $300 O/40 TD & DTREntry Fees: $62 RS; $82 TE $69 GBR; $99 DTRBooks Open: Wednesday Sept 20  10am-3pmEntry Number: (417)876-2353Perf: 8 PMLocation: Chanute, KSDirections: 2730 Katy Ave Chanute, KS
Oct 6-7, 2023 URA/MRCAHarrisonville, MOCass Co Sheriff's RodeoC.R. McKellips RodeoAdded Money: $300 all eventsEntry Fees:  $60 RS; $80TE; $67 GBR; $97 DTRBooks Open: Wednesday Sept 27       10am-3pmEntry Number: (417)876-2353Perf: 8 P.M.Location: North Park ArenaDirections: 1500 Jefferson Pkwy Harrisonville, MO
October 13-14, 2023 URA/MRCA/ACRACarthage, MOMaple Leaf Festival RodeoC.R. McKellips RodeoAdded Money: $500 all eventsEntry Fees:   $62 RS; $82 TE; $69 GBR; $99 DTRBooks Open: Wednesday Oct 4      10am-3pmEntry Number: (417)876-2353Perf: 8 PMLocation:Carthage, MODirections: 521 Robert Ellis Young Dr Carthage, MO

Nov.3-5, 2023URA FinalsTopeka, KSTop 15 in all events
2022 Finals Program

Judging Clinic: Saturday, Nov. 5th 9am at Domer Arena, Topeka, KS