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About RaceIndexOur methodologyData coverageCyclingTriathlon
  • Half Marathon
  • 21.1 km
  • Barnes
  • Event weekend starts
  • Past event

Thames Meander Marathon (London) Half Marathon

This race edition

Race date
Date not confirmed for this distance
Race timezone
Timezone not confirmed
Edition status
Status not confirmed

Entry options

2026 edition

Entry options are not yet confirmed for this edition. Check the organiser before making plans.

Modelled energy-cost change 0.5% versus flat · net elevation 0 m

View verified GPS mapOfficial event website ↗
Plan my trainingPlan my paceData current as of Source last verified

Decision summary

Thames Meander Marathon (London) Half Marathon at a glance

Route ascent
159 m

Lower than 47% of comparable mapped races

Cut-off average pace
17:04/km

6:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.

Typical conditions
36/100

Historical race-date favourability, not a forecast

Evidence depth
26 verified facts

Stored GPS route

Quick answers

What runners ask first

Thames Meander Marathon (London) Half Marathon route map

raceindex.org has a GPS course file for Thames Meander Marathon (London) Half Marathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.

How hilly is the Thames Meander Marathon (London) Half Marathon?

The Thames Meander Marathon (London) Half Marathon route has 159 m of ascent, 159 m of descent and an estimated 0.5% grade-adjusted pace penalty versus a flat route.

Where does the Thames Meander Marathon (London) Half Marathon route go?

The Thames Meander Marathon (London) Half Marathon route starts at Small Profit Dock Gardens, Lonsdale Road, Barnes, London SW13 9JS (CP1 Start/Finish) and finishes at Small Profit Dock Gardens, Lonsdale Road, Barnes, London SW13 9JS. Underfoot, expect a road course. It passes River Thames, Barnes Bridge, Thames Path towpath, Kew Gardens and Richmond. Three distances on the same day along the Thames Path: Marathon, Half Marathon and 10K, all very flat and fast with an out-and-back format.

What should runners know on race day for the Thames Meander Marathon (London) Half Marathon?

Bag storage available at race HQ; runners are advised to arrive at least 45 minutes before their start to register, store bags and warm up.

Race character

Scenery

  • Riverside
  • Waterfront
  • Parkland
  • City

Atmosphere

  • Scenic Tour
  • Community

Terrain

  • Road
  • Trail

Entry, logistics and records

Entry requirements

Entry status
Past event: The listed edition date has passed.
Minimum age
17+
Cut-off
Half Marathon time limit is 6 hours.

Race day logistics

Bag drop
Bag storage available at race HQ; runners are advised to arrive at least 45 minutes before their start to register, store bags and warm up.
Medal
Finishers receive a medal; medals and merchandise are available at the event.

Access and course status

Start
Small Profit Dock Gardens, Lonsdale Road, Barnes, London SW13 9JS (CP1 Start/Finish).
Finish
Small Profit Dock Gardens, Lonsdale Road, Barnes, London SW13 9JS.
Nearest station
Barnes Bridge railway station is adjacent to the Barnes start/finish; bus routes 65 and 371 also serve the area
Measured course
Yes

Course facts

Course type
Out And Back
Landmarks
River Thames, Barnes Bridge, Thames Path towpath, Kew Gardens, Richmond, Petersham, Ham
Notable features
  • Three distances on the same day along the Thames Path: Marathon, Half Marathon and 10K, all very flat and fast with an out-and-back format

How hilly is the Thames Meander Marathon (London) Half Marathon?

15%69%15%
  • Steep descent 0%
  • Descent 15%
  • Flat 69%
  • Climb 15%
  • Steep climb 0%
Total ascent
159 m
Net elevation
+0 m
GAP factor
0.5%
Longest climb
360 m at 2.0%
Gradient mix and ascent are derived from the course geometry under our published normalisation, not taken from organiser marketing.

What are typical race-day conditions?

  • 25°CTypical temperature
  • 18 kphTypical wind
  • 2 mmTypical rainfall
  • 36Favourability /100
Typical conditions for the race date and locality, warmer than the endurance-optimal window. These are climatological norms, not a forecast, and are shared across every distance at this event.

More race details

Is the Thames Meander Marathon (London) Half Marathon flat?

Its normalised GAP factor is 0.5% slower than a flat course, with about 159 m of total ascent.

How we calculated this

Published facts and derived model outputs on this page are tied to stored sources or a published, version-locked methodology. We show the provenance so runners, coaches and organisers can check it. Data on this page is current as of .

Derived numbers use scoring-methodology-v1.0.

Sources used on this page (2)

Read the full methodology →

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