Trail Running calendar near Brentwood 2025-2026

We have found 305 Trailruns within 80 miles of Brentwood. See below where and when you can find the races.

TrailFest at Salcey Forest on 28 June 2026 offers 10K, half, marathon and 50 km routes through scenic, firm forest trails with a friendly festival vibe. Carry your own cup or bottle and enjoy well marked routes for all abilities.

July 2026

Join a guided 10km trail run around the Devil's Punchbowl in Hindhead, enjoying rolling hills and a scenic pause with great views. This friendly group paced run is led by an experienced guide and runs at sunset or by headtorch in winter.

Tackle the Essex Way Ultra, an 82 mile trail from Epping tube to Harwich lighthouse on 3 and 4 July 2026. With just 65 places this scenic mixed terrain challenge offers GPS tracking, race support and a 24 hour cut off.

UTMB Index

Event overview The SATURN Midweek Chasing Numbers event takes place on Friday, 3 July 2026 at Wraysbury Skiff & Punting Club, Egham (TW20 0AE). It is a 7 hour Time Challenge with flexible start times available throughout the day. The ev..

Take on the Serpent Trail in the South Downs on 4 July 2026, with routes from 10 km to 100 km across heathland, ancient woods and chalk hills. Camping, coach transfers, food and a licensed bar make it a perfect weekend for runners and walke..

UTMB Index

Fen Gallop 2026 is a scenic running event held in Willingham, Cambridgeshire, featuring flat, multi-terrain courses along country roads, footpaths, and bridleways. Participants can choose between a 10K race or a shorter 4-mile option, both..

On 5 July 2026 the Chiltern Ridge Half Marathon offers a scenic off road challenge along The Ridgeway near Wendover, with rolling climbs and woodland views. Entries are limited to 350 runners so book early for this memorable trail experienc..

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Join the Bishop's Stortford Mitre on 5 July 2026 for community 10k, 5k and a fun 1K kids race on traffic free country lanes at Jobbers Wood. Support the Mitre Fund and enjoy chip timing, a finisher T shirt or a tree planted in your name.

Explore Thursley Common on a guided 10km trail run, a notably flat route with a scenic boardwalk and plenty of birdlife and dragonflies. Enjoy a friendly group atmosphere with kit to try and optional post run refreshment.

Run the Ridgeway to the Avebury Standing Stones in Race to the Stones, with 50 km and 100 km options including a two day format. Scenic trails, marked course, pitstops and full support make this a bucket list ultramarathon.

The The Maverick Chilterns Trail will take place in Wendover on Saturday 11 July 2026. You can run between 10 and 51 kilometers.

Join the Norfolk Festival of Running at Bawsey Country Park for looped sand, gravel and grass trails with distances from 5k to ultra marathon. Small field, lap based courses with on site aid and parking included for a relaxed race day.

Ultra:5K Kempston is held at Box End Park, Box End Rd, Kempston MK43 8RQ. The event, scheduled for Sunday 12 July, offers a simple but challenging format: participants run a 5K on the hour, every hour, for five hours. A three-race option is..

BigHeat CAMP FIRE is a festival style trail weekend at Mill Farm in the Surrey Hills, pairing single lap scenic trails with a fiery communal vibe. Choose from 2 km to a 50 km ultra, then unwind with camping, live music and yoga.

Run through scenic Wendover Woods with 5K and challenging 10K trail options plus a 1.5K accessible loop. Limited to 500 runners, with chip timing and a finisher medal for all.

Camp and run for 24 hours on the scenic Shotley peninsula in Suffolk, tackling a fully marked 4.3 mile coastal lap with solo, pairs or team entries. Enjoy onsite camping, yoga sessions, sauna options and bespoke vests and medals.

Enjoy scenic trails at Winwick Hall with 10k, 5k and a 2k kids fun run, all fully marshaled and perfect for families. Run for the Bruce Green Foundation and pick up a finisher medal in this friendly country event.

Run the ATW St Albans Summer 10K on 19 July 2026 at Highfield Park for a chip timed 10 km along the Alban Way, with a free family fun run. Festival vibes with live music, kids activities, food stalls and a custom medal while supporting Alzh..

Run ten consecutive days at the Suffolk Running Centre in the Great Barrow Challenge, choosing distances from 5 km to ultra. Entry covers all ten days and parking, bespoke medals each day and the event is cupless so bring your own bottle.

Zig Zag Running hosts the Great Barrow Challenge at the Suffolk Running Centre, Church Road, Bury St Edmunds, IP29 5AX. This 10-day, individual event offers multiple distances — 5k, 10k, half, full and ultra — with Day 1 featuring the Denha..