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Boston Marathon 2027

✓ Verified date — April 19, 2027
Date
April 19, 2027
Location
Boston, USA
Distance
42.2 km
Difficulty
Easy
Field
28,487 finishers

The 2027 Boston Marathon takes place on Monday, April 19, 2027 in Boston, USA. A point-to-point course from Hopkinton to downtown Boston, Massachusetts, passing through Ashland, Framingham, Natick, Wellesley, Newton and Brookline before finishing on Boylston Street near Copley Square. Race-week weather is typically 5°C to 14°C.

Training for the Boston Marathon?

Coach Icarus builds your plan around your fitness and your schedule.

The course

A point-to-point course from Hopkinton to downtown Boston, Massachusetts, passing through Ashland, Framingham, Natick, Wellesley, Newton and Brookline before finishing on Boylston Street near Copley Square. The opening miles descend, followed by rolling terrain; from mile 16 the route hits the four Newton Hills, culminating in Heartbreak Hill just after mile 20. The final miles descend through Brookline and Kenmore Square, ending with the right onto Hereford Street and left onto Boylston; the course has a net elevation drop of about 140 metres.

Course summary source: runabc.co.uk

Course map & elevation

Distance

42.4 km

Elevation gain

80 m

Elevation loss

226 m

High / low

134 / 8 m

0 km8 m – 139 m42.4 km

🛰️ Community-sourced GPX with DEM-corrected elevation — not an organizer-verified course.

Race-week weather

Typical high

14°C

Typical low

5°C

Year-to-year swing

±2.4°C

Rain

2.8 mm/day

Based on 2020-2025 of race-week history, with peak gusts around 23 km/h.

Difficulty

Easyrolling terrain
Climbing1/3
Downhill0/3
Heat1/3
Altitude0/3

Entry difficulty: BQ time required — separate from how hard the course itself is.

Race facts

Official race site
baa.org ↗
Start time
10:00
Field size
28,487 finishers (2025)
Boston qualifier
Yes

Distances: 42.2 km

When is the Boston Marathon 2027?

The 2027 Boston Marathon takes place on Monday, April 19, 2027.

Training for the Boston Marathon?

Coach Icarus builds your plan around your fitness and your schedule.

Predict your finish time

Enter one recent race result and get predicted finish times across 5K, 10K, half marathon, and marathon.

Race Time Predictor
Enter a recent race result to predict your finish time at another distance, using Riegel's formula.
Hours
Minutes
Seconds

Predicted Finish Time

52:07

Pace / km

5:13

Pace / mile

8:23

DistancePredicted Time
5K25:00
10K52:07
Half Marathon1:55:00
Marathon3:59:47

Predictions assume similar fitness, course, and conditions — they are a starting point for goal setting, not a guarantee.

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