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Boston Cut-off Time Prediction Contest

Boston Cut-off Time Prediction Contest

Predict the 2027 Boston Cut-off Time and win a great prize and bragging rights among all your running friends.

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Best Boston Marathon Qualifiers for 2026

Best Boston Marathon Qualifiers

It's here! Our annual list of the year's
best marathons to help you qualify for the Boston Marathon.

2026 IS HERE!


Marathon Pace Bands

Marathon Pace Bands

Run the Right Pace in Your Next Marathon

Nearly 500 marathon courses.
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The 2026 London Marathon Weather is LIVE!

See your likely race conditions from the start to The Mall based on your start time and goal time.

Customize your forecast

Select Your Goal Time and Start Time

Choose your projected finish time and approximate start time to see more personalized weather, wind, and race-day guidance along the course.

Goal Finish Time

: :

Start Time

Units

London Marathon Course Weather

Personalized to your selected start time and finish goal.

9:35am Start 10:05am Cutty Sark 10:32am Tower Bridge 11:02am Canary Wharf 11:35am Finish
Race Conditions Summary
Good Expect a overcast start around Greenwich/Blackheath near 55°F, with temperatures rising to about 60°F by the finish. Overcast conditions should hold for much of the day. The biggest wind challenge looks to be in the opening 5 miles, where headwind exposure may be the most noticeable. The late miles may feel warmer than the opening stretch, so staying controlled early should help.
ToughFairGoodGreat
Based on temperature, humidity, wind, and precipitation across your time on the course.

Start

9:35am
Overcast
55°F
Humidity: 66%Dewpoint: 44°FWind: 7mph E

Cutty Sark (6.5)

10:05am
Overcast
55°F
Humidity: 67%Dewpoint: 44°FWind: 7mph E

Tower Bridge (12.4)

10:32am
Overcast
58°F
Humidity: 60%Dewpoint: 43°FWind: 7mph E

Canary Wharf (19)

11:02am
Sunny
58°F
Humidity: 56%Dewpoint: 42°FWind: 7mph E

Finish

11:35am
Overcast
60°F
Humidity: 50%Dewpoint: 42°FWind: 6mph E

Wind Snapshot

Tailwind41% of the course
Headwind22% of the course
Start to Mile 5
Slightly challenging
32% tailwind / 41% headwind
7 mph · E
Gusts: 15 mph
Miles 6 - 10
Helpful
43% tailwind / 5% headwind
7 mph · E
Gusts: 15 mph
Miles 11 - 15
Slightly challenging
23% tailwind / 41% headwind
7 mph · E
Gusts: 14 mph
Miles 16 - 20
Neutral
22% tailwind / 22% headwind
7 mph · E
Gusts: 15 mph
Miles 21 to Finish
Helpful
77% tailwind / 3% headwind
6 mph · E
Gusts: 14 mph

What This Means for Your Race

The opening miles should feel fairly comfortable for marathon running, with a good chance to settle into pace early.
Late-race conditions look relatively manageable, which should reward runners who stay patient through Tower Bridge and the Docklands.
There looks to be some helpful wind across larger sections of the course, but it is still best to avoid forcing the pace early.

What to Wear / Carry

Quick recommendations based on start temperature, late-race warmth, wind, and rain risk.

✓Race kit should be enough at the start
✓Prioritize fluids late
✓No major rain gear needed
✓Minimal extra gear needed

2026 vs Typical London

Metric
2026
Typical
Diff
Race average temp
57°F
52°F
+5°
Start temperature
55°F
51°F
+4°
Start humidity
66%
76%
-10%
Start wind speed
7 mph
8 mph
-1 mph
Start wind direction
E
SW
 
Start conditions
Overcast
Partly Cloudy
Different

A warmer-than-normal London race day could make the second half and final Embankment miles feel harder than usual.

London Marathon Course Map

Interactive route map of the London Marathon with checkpoint weather from Start, Cutty Sark, Tower Bridge, Canary Wharf, and the Finish.
London Marathon Elevation Profile