The main issue is stamina, not distance.
The circuit is about 1.94 km, but children feel the stairs, exposed stone and stops more than the map distance. Build in time for pauses instead of promising a fast lap.
Supervision is an official requirement.
The City Walls code of conduct states that children must always be supervised by an adult. That matters especially on stairs, narrow areas and high viewpoints where the route can feel exciting and distracting.
Ticket rules differ by age.
The official FAQ states that children under 7 do not pay and ages 7–18 use a child ticket. Because prices and terms can change, confirm the live ticket categories before purchase.
Strollers are a poor fit for the circuit.
The Walls have extensive stairs and are not designed as a step-free route. For toddlers, consider whether carrying equipment and repeated steps will be realistic for your group before buying.
Quick answers
Are Dubrovnik Walls suitable for children?
They can be, especially for children comfortable with walking and stairs. Parents should plan for heat, breaks and close supervision.
Do children need tickets?
The official FAQ currently says children under 7 enter free and ages 7–18 use a child ticket. Check live terms before visiting.
Can I take a stroller on Dubrovnik Walls?
Because the circuit includes many stairs, a stroller is impractical for most families.
References: Official City Walls FAQ · Dubrovnik Tourist Board: City Walls and Fortresses