San Francisco 49ers running back Christian McCaffrey feels he can continue playing into his mid-30s, citing his current physical condition and the success of other older running backs like Derrick Henry and Raheem Mostert. McCaffrey had a standout 2023 season, leading the NFL in rushing yards, touches, and total touchdowns, and he remains optimistic about his future contributions. Despite suffering a calf strain in early August, McCaffrey appears to be recovering well and is expected to be ready for the regular season. His versatility as both a rusher and pass-catcher continues to make him a valuable asset for the 49ers and a top pick in fantasy football drafts. McCaffrey's achievements and resilience underscore his intention to defy the typical career longevity for running backs.