Bardenas Reales - a badlands semi-desert of sculpted buttes (Castildetierra) and canyons

The line through Navarra, Spain - waypoints, elevation and the day-by-day shape of the walk.
Spring and autumn (avoid summer heat)
Extreme heat, no shade, wind and dust
Best spring/autumn; extreme summer heat and no shade; some tracks close on military-range firing days. Confirm.
Flat semi-desert of clay and wind-carved buttes
Non-technical walking/hiking; confirm any exposed or scrambly sections locally
Marked/waymarked route; navigation generally straightforward - carry a map and confirm locally
Accessible to most walkers and families; not fully wheelchair accessible - confirm
A popular, well-known route - busier in peak season
Drive-and-short-walk to Castildetierra; longer cycling/walking loops
Bardenas Reales, from Tudela
Out-and-back/loop - no shuttle needed
Day route - none needed
Day-hike kit, water, sun/rain protection, sturdy footwear; coverage varies
Services in Tudela; limited or none on the trail
Not required; self-guided
No permit; a natural park; parts close for military-range use - verify. Confirm.
Permits and operators change - confirm before booking.
Heat/dehydration, no shade, getting lost on the tracks, occasional range closures
Retrace the route to exit; dial local emergency services; carry a means of calling for help where remote
This profile is desk research, compiled from public sources - not a first-hand trail report. Coordinates are approximate.