Martin Truex Jr. Says Goodbye to NASCAR: Martin Truex Jr. has declared his retirement from full-time NASCAR racing, effective at the end of the 2024 season. Martin Truex Jr. announced his retirement from full-time NASCAR racing after the 2024 season to prioritize family time and personal fulfillment. Martin Truex Jr.’s illustrious career at Joe Gibbs Racing has set a high bar in NASCAR, but with the end of the 2024 season approaching, he is preparing for a remarkable life change.