Richmond Runfest Marathon
Race Day Weather
Cool start, gradual warm-up
Runners will face a temperature range from 54°F at the start, rising to 66°F by the finish, alongside high humidity at 78%. A light crosswind will be present initially, shifting to headwinds during key segments like miles 4, 7-8, and 11-16, making pacing adjustments essential. Runners should consider a conservative start and maintain hydration, particularly as temperatures rise in the later miles.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Richmond Runfest Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Get your personalized Richmond Runfest Marathon race plan
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.
Race Info
The Richmond Runfest Marathon runs through Richmond upon Thames in southwest London, starting inside the Royal Botanic Gardens, Kew and finishing at Old Deer Park. The England Athletics certified course follows the Thames Towpath past Ham House, Teddington Lock, Kingston Riverside and Hampton Court Palace. It is a Boston Marathon qualifier and a London Marathon Good for Age qualifying course. The same weekend also includes a half marathon and a 10K over the Richmond RUN-FEST festival.