Benchmarked strictly across TripTiming's 5 empirical pillars: Crowds, Weather, Vibes, Prices, and Safety.
Medellín emerges as the optimal March destination with an overall TripTiming Index of 72/100 vs 69/100 for Cartagena (+3 point advantage). Medellín experiences more manageable visitor density and shorter landmark queues (carrying capacity score 71/100 vs 56/100 in Cartagena). This is reinforced by lower lodging rates (~$67/night vs ~$161/night, saving ~$658 over 7 nights). While Cartagena retains an edge in Weather Comfort (90/100 vs 79/100), Medellín's commanding performance in Space & Crowds secures the overall March recommendation.