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About RaceIndexOur methodologyData coverageCyclingTriathlon
  • Relay
  • 21.1 km
  • London
  • Event weekend starts
  • Past event

The Big Half Relay

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.

Official event website ↗
Data current as of Source last verified

Decision summary

The Big Half Relay at a glance

Cut-off average pace
11:23/km

4:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.

Typical conditions
72/100

Historical race-date favourability, not a forecast

Evidence depth
18 verified facts

Source facts available

Route details

Known course facts at a glance

Methodology →

The Big Half Relay has known course details for its relay race. The summary below keeps the focus on what is confirmed for the course.

Official distance
21.1 km
Scenery
City, Riverside, Historic, Waterfront, Parkland

Quick answers

What runners ask first

Where can I find the The Big Half Relay route map?

Use the official course links on this page for the organiser route page, map PDF or route download.

Official course links

What should runners know on race day for the The Big Half Relay?

Bag drop is available. The event uses closed-road arrangements.

Race character

Scenery

  • City
  • Riverside
  • Historic
  • Waterfront
  • Parkland

Atmosphere

  • Big City
  • Community
  • Festival

Entry, logistics and records

Entry requirements

Entry status
Past event: The listed edition date has passed.
Cut-off
4:00:00
Sold out
Yes

Race day logistics

Bag drop
Yes
Closed roads
Yes

Access and course status

Accessibility
Accessible toilets, sensory calm space, parent and child space, multi-faith prayer space, support runner places for visually impaired participants, disability hubs and accessible spectator areas

Course facts

Laps
4

What are typical race-day conditions?

  • 17°CTypical temperature
  • 19 kphTypical wind
  • 1 mmTypical rainfall
  • 72Favourability /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.

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 →