[5] In 2011, Creed won a pair of Lucas Oil Regional championships in the Modified Karts and SuperLite Southern California divisions.

[9][10] In September, he made his SuperLite national debut at Speedworld Offroad Park, where he recorded a runner-up finish in the weekend's second race.

[23] The 2014 Pro Lite season began with six consecutive podium finishes,[24] including a win at Wild Horse Pass Motorsports Park after holding off Justin Smith, while the second victory came at Miller in June.

[25][26] Despite the strong start, Creed did not win again for the rest of the year as he "had some rough races in the middle (of the season)",[27] while main championship rival Deegan won twice.

70 at Wild West Motorsports Park; Creed went on to win the first race after taking the lead early, and DeBerti was credited with the victory in the standings.

[35] When the series returned to Qualcomm Stadium two weeks later, he set the fastest lap time in qualifying before finishing second in the final to Robby Gordon.

[44] Creed won again in the final race of the year at MGM Resorts Village, but finished second in the championship behind Gordon by 75 points.

[50] He ended the season with nine wins and 13 podiums,[51] the former of which also included victories at the Sand Sports Super Show (twice),[52] Surfers Paradise Street Circuit (twice),[53][54] Valvoline Raceway,[55] and Las Vegas.

[64][65] In October, he joined Gordon at the Mike's Peak Hill Climb Challenge in Baja California, a hillclimbing event that did not count for the championship.

[69][70] Additional victories came with a sweep of the Chevrolet Detroit Grand Prix and winning the second race at Texas Motor Speedway.

[73] In 2018, he ran the Lake Elsinore season opener, during which he won his heat and finished sixth in the feature after being spun on lap two,[74] and the year's final two races at Glen Helen Raceway, where he was marred by engine problems.

[75] The next season featured a six-race slate for Creed as he swept the Texas Motor Speedway weekend and won the Saturday race at Portland International Raceway.

Mechanical troubles plagued Creed's stint before Max took over and completed the distance, though the younger Gordon's ineligibility meant the entry was officially classified as a retirement.

[99] He raced for Jefferson Pitts Racing in the Pro Series West at Orange Show Speedway, where he qualified sixth after being the fastest car in practice and finished second to Chris Eggleston, and Sonoma Raceway, where he finished ninth in a two-car effort for JPR alongside NASCAR Cup Series driver Kevin Harvick.

[100][96] Creed's 2017 stock car schedule also included ARCA, which began with the Nashville race in April with MDM, where he finished sixth.

[105] At Kentucky Speedway, Creed won the pole position and finished third after hitting the wall on the last lap while attempting to pass Theriault for the lead.

[117] After starting sixth, Creed claimed the lead following a penalty to leader Christopher Bell, and he held off fellow off-road racer Hailie Deegan for the win.

[118][117] Creed returned to ARCA in 2019 at Charlotte Motor Speedway with GMS Racing, finishing second after rebounding from a late speeding penalty.

[139] Despite showing competitive race paces during his rookie campaign, he struggled with consistency and controlling his aggressive driving style, the latter of which Creed noted was effective in ARCA but unsustainable in NASCAR.

[147] The final race at Phoenix Raceway saw him pit prior to overtime and fall from third to ninth, but a strong restart propelled him to the lead and ultimately the championship.

[150] At Darlington Raceway, crashes in the last stage eliminated the leaders and Creed took the lead on the final restart, preventing Rhodes from passing him as he won his first race of the season.

[151] The inaugural Corn Belt 150 at Knoxville Raceway saw Creed struggle midway before climbing to sixth with ten laps remaining before he was collected in a multi-driver accident.

[160][161] He chose to compete in the road course events as he felt he needed more experience on such tracks in cars, and that when one received an "opportunity with a big-time ride, you want to be ready.

"[162] Mechanical issues plagued Creed's Xfinity debut at Mid-Ohio, with a jammed gearbox in practice causing him to qualify 32nd and visit the garage for repairs during the race; when he returned to the track, he was 16 laps behind the leaders.

Although he had no prior experience at Road Atlanta and was unable to test the car due to other obligations, he prepared for the race using iRacing.com, in-car video from Stevens-Miller, and a virtual track system from Ross Bentley.

[178][179] He recorded another top ten at Mid-Ohio (sixth) before scoring his first TA2 win at Road America;[180] in rainy conditions, he passed race leader Tony Buffomante with five laps remaining.

[182] After Creed and Stewart Friesen finished second and first in the 2019 Eldora Dirt Derby, the two held a ten-lap one-on-one exhibition race at Orange County Fair Speedway in August as part of the track's centennial anniversary.

[189] In August 2022, Creed made his USAC National Midget Series debut in the BC39 at Indianapolis Motor Speedway with Abacus Racing.

[192] During qualifying at Atlanta Motor Speedway in 2024, Rick Allen gave Sheldon the nickname "Silver" to represent the amount of times he has finished second in the Xfinity series.

His father Scott, who supported him throughout his early career,[5] was a dirt bike rider while his grandfather was a late model racer at Cajon Speedway.