The short answer
On a cruise stop, do the Walled City. It's about 5km from the cruise terminal, 15 to 20 minutes by taxi, and travel guides put the fare at around $20 USD each way. Three hours on foot covers it without rushing, which leaves room for lunch and a slow walk back. Everything else in this article is about whether you have time for something better, and the honest answer depends entirely on your all-aboard time.
We live 25 minutes offshore and run boats to and from the city several times a day, so the clock is the thing we think about most. Here's how we'd spend your hours.
First, work out your real number
Your usable time is not your time in port. Take your all-aboard time, subtract 45 minutes of slack, then subtract the round trip from wherever you're going. What's left is the day.
| If you have | What actually fits |
|---|---|
| Under 4 hours ashore | The Walled City on foot, lunch, nothing else |
| 4 to 6 hours | Walled City plus Getsemani, or the Walled City plus a fortress |
| All-aboard after 5:30pm | A boat out to the islands is on the table |
The terminal itself is not a waiting room, and that's the trap
The cruise terminal has free wifi, ATMs, restrooms and a coffee shop, which is enough to make people linger. Don't. The terminal is a filter, not a destination: taxis wait at the exit plaza on zone rates, and the fare to the old town is the one thing worth settling out loud before the doors close. Ask the driver to confirm the number, in pesos, at the kerb.
The Walled City: three hours, on foot, no plan required
The Walled City is a working colonial quarter inside intact 16th and 17th century stone walls, and it is the correct default for a cruise day because you can do it badly and still have a good time. Enter at the Torre del Reloj, the yellow clock-tower gate, and walk without a route. The grid is small enough that you cannot get properly lost and shaded enough that midday is survivable.
Our point of view: skip the emerald shops, spend the money on lunch, and climb onto the walls themselves for the last half hour before you head back. The walls are free, they're where the breeze is, and they're the only part of the old city that looks like what it was built for. Go in the morning if your ship docks early. By 1pm the stone is throwing heat back at you.
If you have a spare hour on top, Getsemani is the neighbourhood immediately outside the walls, quieter, painted, and more lived-in. It's a ten minute walk from the Torre del Reloj and a better coffee stop than anywhere inside the walls.
Can you get to a beach? Only with a late all-aboard
A proper island beach day is possible, but the arithmetic is unforgiving, so here it is plainly. Our boat leaves from the Muelle de la Bodeguita, at the edge of the old city, at 10am and 11:30am. The crossing to us on Tierra Bomba takes about 25 minutes. The boats back leave us at 4pm and 5:30pm. Add the taxi at both ends and the 4pm boat has you at the terminal around 5pm.
So: if your all-aboard is 5pm or earlier, don't. You'll spend the day watching your watch, which is the opposite of the point. If your ship sits late, the day works, and it's $40 for a club day pass with the boat transfers included, with a sun lounger extra and food and drink charged as you order it. Reserve ahead, because the boat has a limited capacity and if there's no space on it, the wait for the next one is long.
What you get for the crossing: our beach has volcanic sand, which is grey rather than white, and it faces open ocean rather than a sheltered bay. The pool is where most people end up. The beach club runs 10:30 to 6pm, day visitors from 11am, and on Saturdays there's a DJ from one until five if you want the louder version.
Bocachica, if you'd rather see something than sit on it
Bocachica is the village on our island: no paved roads, no running water, and a lot more character than a beach club can manufacture. From us it's a five minute motorbike-taxi ride, and the walk takes in the San Fernando fortress, the twin of the fort across the channel that once closed off the southern entrance to Cartagena's bay with a chain. It'll blow your mind, and it will not look like the brochure version of the Caribbean. Do not expect chic restaurants. This is island life as it's actually lived.
This is a half-day on top of the crossing, so it's for people whose ship overnights, not for a six-hour stop.
What we'd actually do with your day
Short stop: taxi in, Torre del Reloj, wander, lunch inside the walls, half an hour up on the walls, taxi back, early. Long stop with a late all-aboard: 10am boat out to the island, lunch by the pool, 4pm boat back with an hour of slack in hand. Either way, agree fares before you ride, carry pesos, and put your return time in your phone rather than in your memory.
See you on the boat.