TCS New York City Marathon

{
  "guide": [
    "Run the Verrazzano with restraint. The climb is hidden by adrenaline — every second saved here pays double in Central Park.",
    "The Queensboro at km 25 is silent. Use your watch and run by effort, not by crowd noise.",
    "First Avenue is the loudest section in marathoning. Runners surge 10–15 sec/km here. Don't.",
    "Central Park's rolling hills come at km 38+. Train rolling terrain in long runs.",
    "November NYC weather is unpredictable. Layer choices matter."
  ],
  "profile": "The hardest of the World Majors. Five boroughs, five bridges. Constant rolling terrain plus the Verrazzano climb at the start and the Central Park hills at the finish.",
  "terrain": "rolling",
  "keyFeatures": [
    "km 0–3 — Verrazzano-Narrows Bridge. ~40 m climb in the first 2 km, then descent.",
    "km 13 — Pulaski Bridge into Queens. Sneaky climb at halfway.",
    "km 25 — Queensboro Bridge. The silent killer — no crowds, 1.5 km climb, lonely and steep.",
    "km 26 — First Avenue. Wall of sound coming off the bridge — easy to surge and blow up.",
    "km 32 — Willis Avenue Bridge into the Bronx, then back over Madison Avenue Bridge.",
    "km 38–42 — Central Park. Rolling hills the whole way to the finish at Tavern on the Green."
  ],
  "elevationGain": 250,
  "elevationLoss": 250
}