London Landmarks Half Marathon

London, UK, England · April 4, 2027
partly-cloudy-day46°·49° high·Breezy·Dry
9
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London Landmarks Half Marathon race day weather

partly-cloudy-day
46°at start
54° high
Breezy
Dry
Your goal
0:00:00

Cool conditions, strategic pacing needed

Runners will face a start temperature of 46°F, rising slightly to 49°F by finish. Wind will present a challenge with headwinds during miles 5 and 8, and again from miles 10 to 12, while tailwinds will assist in miles 1-3 and 7. With humidity at 72%, it's advisable to adjust pace conservatively, especially in exposed sections against the wind.

Race day forecast available in 127 days
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Pace Calculator

13.1mi
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London Landmarks Half Marathon route and elevation

The London Landmarks Half Marathon course has about 195 ft (59 m) of climbing and 283 ft (86 m) of descent, a net drop of about 88 ft (27 m). It drops more than it climbs, and its terrain is faster than 92% of the half marathon courses racecast.io has mapped, measured by what the hills cost in time. It has no steep miles: no mile climbs more than 40 ft (12 m).

What the hills cost

  • 1:45 on a flat course is about 1:44:40 here (20 seconds faster).
  • 2:00 on a flat course is about 1:59:40 here (20 seconds faster).
  • 2:15 on a flat course is about 2:14:35 here (25 seconds faster).

Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.

Even-effort splits for a 1:45, 2:00 or 2:15 finish
The London Landmarks Half Marathon mile splits at even effort for three finish times, with each mile's climb and descent
MileClimbDescent1:452:002:15
134 ft31 ft8:039:1210:21
236 ft38 ft8:019:1010:19
329 ft61 ft7:559:0210:10
413 ft15 ft8:019:1110:19
529 ft23 ft8:059:1410:24
615 ft27 ft7:599:0810:16
715 ft25 ft8:009:0810:16
822 ft35 ft7:599:0710:16
913 ft34 ft7:579:0610:14
1033 ft34 ft8:029:1010:19
1111 ft19 ft8:009:0910:18
127 ft7 ft8:029:1110:20
1329 ft29 ft8:029:1110:19
Last 0.10 ft3 ft0:541:011:09

Explore the London Landmarks Half Marathon course with the weather and your pace along the route, or compare it with other races.

Race Plan

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A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

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About the London Landmarks Half Marathon

London Landmarks Half Marathon is a closed-road half marathon run entirely through the City of London and City of Westminster, the only UK half marathon to cover both. The route starts near Pall Mall and finishes on Downing Street, passing landmarks including Big Ben, Trafalgar Square, St Paul's Cathedral, the Royal Courts of Justice, Tower Bridge and the London Eye. The event is owned and organized by the charity Tommy's and has raised over £88 million for the charity sector since launching in 2018. Runners have set multiple Guinness World Records at the event while in costume, and fancy dress is common. About 14,000 runners take part each year via public ballot or charity places, with a four-hour time limit before roads reopen to traffic. Source

London Landmarks Half Marathon FAQ

When is the 2027 London Landmarks Half Marathon?

The 2027 London Landmarks Half Marathon will be held on Sunday April 4, 2027.

What will the weather be like for the 2027 London Landmarks Half Marathon?

The forecast calls for a high of 55°F and a low of 41°F with a 7% chance of rain.

What is the elevation gain of the London Landmarks Half Marathon?

The London Landmarks Half Marathon course has about 195 ft (59 m) of climbing and 283 ft (86 m) of descent, a net drop of about 88 ft (27 m).

Is the London Landmarks Half Marathon flat?

Yes. It has about 15 ft (5 m) of climbing per mile, and no mile climbs more than 40 ft (12 m). 2:00 on a flat course is about 1:59:40 here (20 seconds faster). It drops more than it climbs, and its terrain is faster than 92% of the half marathon courses racecast.io has mapped, measured by what the hills cost in time.

What is the weather usually like for the London Landmarks Half Marathon?

Over the 8 years racecast.io has race-day weather for (2018 to 2026), it averaged 49°F at the start and 53°F by a typical finish. Rain fell during race hours in 1 of those years (2026).

What was the hottest London Landmarks Half Marathon?

Of the 8 years on record, 2021 was the warmest, reaching 66°F during race hours. The coldest start was 2022, at 40°F.

What was the windiest London Landmarks Half Marathon?

Of the 8 years on record, 2024 was the windiest, with wind averaging 21 mph during race hours. The calmest was 2021, at 3 mph.

London Landmarks Half Marathon weather history

Based on 8 years of data
Avg Temp
51°F
L:49° H:53°
RunScore
9
Conditions
Rain Freq
13%
1 of 8 yrs
Wind10mph
Dew41°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
50°/54°Light
9
2025
clear-day
47°/54°-
9
2024
partly-cloudy-day
56°/59°-
7
2023
cloudy
45°/46°-
10
2022
clear-day
40°/44°-
10
2021
partly-cloudy-day
61°/66°-
6
2019
partly-cloudy-day
42°/50°-
10
2018
cloudy
47°/48°-
10