Castleton, United Kingdom · Saturday, April 18, 2026

Fixed Distance 50 mi

Peak District Birthday Bash

Race completed

70 km Distance

8 m Climbing

3.5 Grit · Challenging

53.3407° N, 1.7868° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 0 m / km Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.

Time limit 12 hours 10:17 min/km average. Generous. Walkable throughout for most of the field. Tighter than 70% of 50 mi races. Measured against 471 races of the same distance. Cut-off calculator →

Field size ~74 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 edition (70km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, April

Daytime high 12°C

Night low 3°C

Rainfall Mostly dry

Daylight 14 h 08 m of light

Regional 2001-2020 average for April — NASA POWER, grid elevation 176 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	70km	74	Tim Brook · 07:50:11	Sian Dillon · 09:51:04
2024	70km	70	Daniel Floyd · 08:14:50	Rachel Lee · 10:17:38
2023	70km	34	Didzis Glusnevs · 07:42:11	Jessica Jones · 11:19:38
2022	70km	65	Ryan Whelan · 08:19:42	Frances Collett · 08:20:31

The field grew 6% between 2024 (70) and 2025 (74). 42% of the 2025 field were women.

DUV results for the 2025 edition (70km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a fast & flat course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 70 km of trail with 8 m of ascent.

Trail Running Shoes 70 km of trail — cushioning that is still there in the last quarter.
Race Nutrition 70 km of self-supported fuelling between aid stations.
Hydration Vests Flask capacity for 70 km, without the bounce.
Headlamps A 12 h limit puts you out there after dark.
GPS Watches Battery life first — a 70 km day outlasts most full-GPS modes.

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Adidas

Terrex Agravic Speed Ultra

RunRepeat found the Adidas Terrex Agravic Speed Ultra to be perfect for midfoot and forefoot strikers, while iRunFar noted that the shoe feels incredibly effici…

★★★★★ 4.5

Spring Energy

Awesome Sauce

Real food gel with 180 calories. Rice-based with natural flavors.

$4 ★★★★★ 4.6

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

Petzl

NAO RL

1500-lumen reactive lighting headlamp with 15-hour runtime. Automatic brightness adjustment.

$150 ★★★★★ 4.7

COROS

APEX 2 Pro

GPS running watch with 75-hour GPS battery, topo maps, and training metrics.

$500 ★★★★★ 4.7

All gear guides →

Overview

The Peak District Birthday Bash is a 70-kilometre trail race that has taken place in Castleton, United Kingdom since 2022. The course features 8 metres of elevation gain, which at 0.1 metres per kilometre, makes it a flat course.

With a time limit of 12 hours, the cut-off pace of 10.3 minutes per kilometre is tighter than 68% of 50-mile races. The event's field size is larger than 65% of its 654 peer races. The entry fee ranges from £70-72.

Similar races

Other 50 mi trail ultras, closest in distance first.