Marathon Compass
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Compare · goal: a fast time

Two ways to run this. One of them is your answer.

Best fitBoston MarathonHopkinton, MA
Course shape
+1,830 ft · net −291 ft
+815 ft · net −490 ft
Race morning
53°F · 48°F dew
49°F · 41°F dew
Getting in
lottery · $275
qualifier · $255
Trip estimate
~$1,655
~$1,505
Race date
Apr 25, 2027
Apr 19, 2027

Boston, on this goal. It has the easier course and the better race morning — and against Big Sur International that is the difference that actually shows up in your finish time.

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If your goal is different
A fast time / BostonBoston
A first marathonBoston
Easiest entryBig Sur International
Crowd & supportBoston
Lower trip costBoston

Race-morning figures are 10-year history normals, not forecasts. Cost and travel are estimated from South Florida; your own origin may flip the trip-cost row. Full method on the methodology page.

Score (10 = easiest)Big Sur International MarathonBoston Marathon
Green Score (overall)
6.4
7.1
First-timer score
6.7
8.0
Terrain
4.2
6.9
Climate
9.0
10.0
Entry
9.5
2.0
Travel
3.0
5.0
Field & support
6.0
10.0
Distancemarathonmarathon
DateApril 25, 2027April 19, 2027
LocationBig Sur, CAHopkinton, MA
Typical race-day weather (normal)53°F / dew 48°F49°F / dew 41°F
Elevation gain1831 ft814 ft
Field size4,50030,000
Entrylotteryqualifier
Entry fee$275$255
Boston qualifier courseYesNo

Sign in and connect Strava to see your projected finish time and qualifying odds at both races — heat- and course-adjusted to race day.