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| Race | 2027 Big Sur International Marathon - Apr 25 |
|---|---|
| City | Big Sur |
| Date | 2027-04-25 at 06:45 |
| Field Size | ~3,300 runners |
| Time Limit | 6 hours |
| Timezone | America/Los_Angeles |
| Official Site | Big Sur Marathon Foundation |
| Registration | Registration opens 2026-08 · Official Site |
| Average Temperature | 11°C / 51°F |
|---|---|
| Humidity | 88% |
| Wind | 6 km/h |
| Rain Chance | 20% |
| Typical Conditions | Cool, humid coastal morning with frequent marine-layer fog |
What to Prepare: Late April on the Big Sur coast starts cool (~51°F / 11°C) with high humidity off the Pacific and a common morning marine layer. The real wild card is wind — Highway 1 headwinds can bite, especially after the climb to Hurricane Point. Wear light layers you can shed, ease the downhills, and run this one by feel for the views, not the clock.
Based on historical averages for race week. Use our Weather Score Calculator and What to Wear Guide for personalized advice.
Wind at 6 km/h can affect your marathon pace by 5-15 seconds per kilometer. Headwinds slow you down exponentially — a 20 km/h wind costs more than twice a 10 km/h wind.
Calculate your wind-adjusted pace →| Course Type | Point-to-point |
|---|---|
| Elevation Gain | 665m |
| Terrain | Road (coastal highway) |
| Profile | A bucket-list scenic point-to-point from Big Sur to Carmel along Highway 1, fully closed to traffic on race morning. The signature 2-mile climb to Hurricane Point (miles 10-12) and the Bixby Bridge at the halfway mark are the centerpiece; +2,182 ft of total climbing on a net-downhill route. It is an official Boston qualifier course, but entry is by random drawing — not a qualifying time — so you come for the coastline, not a PR. |
| Boston Qualifier | Yes — Check your BQ time |
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Free running pace calculator for 5K, 10K, half marathon, and marathon. Get min/km or min/mile, your ...
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Use Calculator →Entry is by random drawing (lottery) — not first-come, and not a qualifying time. The application window opens in summer and names are typically drawn in early September; if you're selected, your card is charged automatically. Guaranteed-entry routes exist through Marathon Tours & Travel, charity bibs, and the Boston 2 Big Sur Challenge.
It is a challenging course — about +2,182 ft of total climbing on a net-downhill, point-to-point route. The signature test is the two-mile climb to Hurricane Point around miles 10-12, often straight into a Pacific headwind. Most runners treat it as a scenic, run-by-feel day rather than a PR attempt.
The course has a 6-hour limit (about a 13:45 per-mile pace), with Highway 1 reopening to traffic at 1 PM. Runners who fall off that pace are picked up and shuttled to the finish so the road can reopen on schedule.
Yes — Big Sur is a certified Boston Marathon qualifier, though the hills make it a tough place to chase a time. The Boston 2 Big Sur (B2B) Challenge is a dedicated program for runners who complete the Boston Marathon and then Big Sur in the same spring.
Late-April mornings on the coast start cool (around 51°F / 11°C) with high humidity and a frequent marine-layer fog, and wind off the Pacific is the wild card. Dress in light layers you can shed and plan for damp, breezy conditions rather than heat.
It is a limited field — around 3,200 marathon finishers in recent years — which is part of why entry runs on a lottery. Keeping the field small protects the point-to-point course on two-lane Highway 1.
It is a point-to-point race: runners start near Big Sur and finish in Carmel, heading north on Highway 1, which is closed to traffic for the morning. The Bixby Creek Bridge marks roughly the halfway point.
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