Articles

Belgian Ultrarunner Karel Sabbe's Record-Breaking Pacific Crest Trail Run Showcased in New YouTube Documentary

Explore Karel Sabbe's record-breaking Pacific Crest Trail run in a riveting documentary. Jour..

Trail Running: How it Can Help Reduce Stress and Anxiety

Trail running is an effective way to reduce stress, anxiety, and improve physical and mental he..

Trail Running vs. Road Running: Which One Is Right For You?

When it comes to running, there are two primary options to choose from: trail running and road..

100 Mile Grand Slam

Name: 100 Mile Grand Slam
Start: 2026-05-02
End: 2026-10-18
Location: Worthing

Worthing, United Kingdom • 2-18 May-Oct 2026

100 Mile Grand Slam 2026

The Centurion 100 Mile Grand Slam 2026 is a combined entry that covers four Centurion 100 mile races held across 2026. The entry package includes the Thames Path 100, South Downs Way 100, North Downs Way 100 and Autumn 100. The event is organised by Centurion Running and listed location is All Four 2026 100 Mile Events. The published entry fee is £888 with a UKA discounted fee of £880. The listing notes that the event is full and no new entries can be made.

The four included races and their dates are:

Thames Path 100: 2nd-3rd May 2026
South Downs Way 100: 13th-14th June 2026
North Downs Way 100: 8th-9th August 2026
Autumn 100: 17th-18th October 2026

Entries opened 24th May 2025 and closed 4th April 2026 for this combined entry. The minimum age for entry is 20 on the event date. The entry list showed 21 participants at the time of the listing. An optional XCover product is offered so participants may be able to obtain a refund if unable to attend due to unforeseen circumstances. Event terms and a cancellation and refund policy are noted for this entry. Visit the organization's website for the most recent information.

United Kingdom South East (England) Worthing

Race information

Registration

100 mi

Thames Path 100

100 mi

North Downs Way 100

100 mi

South Downs Way 100

100 mi

Autumn 100

Visit the organization's website for the most recent information.

Trail runs nearby

Saturday Apr 18

Spring Trail Series by Ultra X

...

Experience the rolling hills and lowland heath of the South Downs National Park with five trail distances ranging from 12km to 110km. All races start and finish at a vibrant event village on the historic Cowdray Estate.

Sunday Apr 19

Martello Half Marathon

Seaford

Half Marathon

A scenic trail half marathon in Seaford on 19 April 2026 that links the seafront with the South Downs and features undulating terrain and climbs. Surplus funds support local charities and entrants receive a medal, water stations and finish..

Sunday Apr 19

Grand National Trail Run - Findon

A charity off road trail run in Findon on 19 April 2026 offering 10 km, canicross, 5 mile and a 2 km kids race. The course climbs to Cissbury Ring then follows Monarchs Way to Nepcote Green and finishes at Wattle House.

Sunday Apr 19

Phoenix Running Crawley

...

Timed lap event at Buchan Country Park on 19 April 2026 with 5.3 km laps to create distances from 5 km up to ultra within a 7 hour limit. Runners may choose one of twelve medals or a lower cost no medal entry.