Seoul Walkability & Gradient Index
A Topographical Analysis of Hotel Accessibility (2025-2026)
Seoul's topography is deceptive. A hotel 200 meters from the subway on a map may sit atop a 15% gradient—turning a short walk into a strenuous climb. We analyzed 21 hotels for incline, steps, pavement quality, and MRT proximity.
Seoul is built on mountains. Unlike Tokyo's flatlands, the city's topography means a 200-meter walk on a map can become a 15% gradient climb with luggage. We evaluated 21 hotels using elevation data, OpenStreetMap audits, and step counts to rank walkability.
The results split into two cities: the “Underground City” (direct subway connections, zero gradient) and the “Hillside Economy” (steep climbs, no elevators).
Our Methodology: The “Sensei Score”
We define walkability as the absence of physical exertion. If you have to drag your luggage up a 15% gradient in sub-zero temperatures, it fails the audit.
Topographical Analysis
Each hotel receives a Sensei Score (0-10) calculated from 4 independent walkability metrics based on elevation data, OpenStreetMap audits, and granular sentiment analysis. We measure actual gradients, step counts, and transit access—not subjective reviews.
Incline Metric
The single most critical determinant of walkability in Seoul is elevation gain. We utilized elevation APIs to calculate the average gradient percentage from the nearest subway exit to the hotel lobby. A 5% grade increases exertion by approximately 50% compared to level ground.
Step Count
Seoul's subway system is vast and efficient, but its depth—often designed to double as bomb shelters—means that surface access can involve hundreds of stairs. We audited OSM data and guest reviews for specific keywords (“stairs,” “no elevator,” “carry luggage”).
Pavement Quality
The friction of travel is heavily influenced by surface texture. We analyzed the “rolling resistance” of the primary pedestrian path. High quality: smooth, wide, paved sidewalks; indoor mall connectors. Low quality: cobblestones, uneven pavement, narrow shared lanes.
MRT Proximity & Hill Penalty
Measured as absolute walking distance in meters. However, we apply a non-linear “Hill Penalty” to this distance. A 500-meter walk on flat ground is manageable; a 200-meter walk on a 10% incline is punitive.
Sensei Score
Weighted average of all 4 metrics, normalized to 0-10 scale. Higher score = Less exertion required. This is our final recommendation metric.