Yes, many routes include one. A common rule in the documents is that the insured person must be under 75 on the cover start date. If a route measures age at the start date, that detail matters more than the date when you buy or read about the cover.
Do not rely on memory or a website summary alone if age is close to the limit. Ask support or check the policy documents carefully so the rule is applied correctly to your exact dates.
Age limits are one of the easiest issues to misunderstand, so it is worth checking directly.