Pippa Middleton joins the Kintbury 5 charity run near her Berkshire home on Sunday

Pippa Middleton delighted residents on Sunday when she took part in the Kintbury 5, a charitable five-mile run hosted by Kintbury St Mary's Primary School near Hungerford, Berkshire.

A composed athletic performance

The Princess of Wales's younger sister, 42, appeared effortlessly composed throughout the course, cutting an athletic figure in HOKA running shorts paired with a Williams Racing cap, her race number 164 pinned to her top.

Fresh blue and white HOKA trainers completed the ensemble, with her hair swept back in a practical ponytail. Her £250,000 diamond engagement ring was clearly visible as she navigated the muddy tracks, trails, and quiet roads that make up the route.

The charity run, which commenced at 10 a.m., was billed as a "fun, lively run" through scenic countryside close to the family's home.

The Kintbury 5 organisers also arranged activities for younger participants, raising the possibility that Pippa's three children — Arthur, seven, Grace, five, and Rose, three — may have joined their mother, though that remains unconfirmed. Pippa shares the children with her husband James Matthews.

An impressive athletic record

Sunday's outing is entirely in keeping with Pippa's remarkable record in endurance sport. She has previously conquered the Great Wall Marathon in China across 26.2 miles in intense heat, completed the gruelling 3,000-mile Race Across America cycling challenge, swum across Istanbul's waters, and taken on a demanding 47-mile Swedish event combining six miles of open-water swimming with 41 miles of trail running.

Her passion for running is one she shares with her elder sister, the Princess of Wales. Mike Tindall once joked that Catherine could "run all day" when selecting her for the wing position in a fantasy rugby squad, though the Princess has acknowledged that marathon running is not possible for her due to security constraints.

A welcome distraction from a legal dispute

Pippa's Sunday outing provided a moment of normality amid more difficult circumstances for the family.

The Middletons are currently embroiled in a privacy dispute concerning their £15 million, 32-bedroom Berkshire residence, Barton Court, where hearings are underway to determine whether an electric security gate erected on the property may remain in place.

Residents have objected, arguing the driveway serves as an essential pedestrian route connecting two footpaths and allowing walkers to avoid hazardous roads.

Pippa has been notably absent from the ongoing Planning Inspectorate hearings, where her husband has continued to argue the case.

In written evidence, Matthews stated: "There are implications for my family, due to their high public profile, which means there is a need for a higher level of security than would otherwise be the case if the circumstances were different."