Running
50km
50 km
Start: Aug 14, 02:00 PM

Running
50km
50 km
Start: Aug 14, 02:00 PM
Running
Marathon
42.2 km
Start: Aug 14, 02:00 PM
Running
Half Marathon
21.1 km
Start: Aug 14, 02:00 PM
180.00 EUR
Running
Half Marathon
21.1 km
Running
10km
10 km
Start: Aug 14, 02:30 PM
Running
5km
5 km
Start: Aug 14, 03:00 PM
Running
Colourburst
5 km
Running
Tunnel Running
4 km
Running
Colourburst
2 km
Start: Aug 14, 03:30 PM
50.00 EUR
The UK's longest underground marathon set in and around the World Heritage City of Bath, featuring tunnel running, countryside and city routes.
Fresh fruit, jaffa cakes, jelly buns, flapjacks, crisps, water and electrolyte drinks at 9 feed stations around the course and at the finish line.
Pacemaker / Pacer information: Target times per start wave are published on the Renntag (race day) page. The event uses Pacerflaggen (pacer flags) to identify pacers on course.
Monthly averages based on historical data (2000–present).
Refunds are available up until 24 August 2026. Please refer to the Terms & Conditions on the registration page for full details.
On-site registration is available at £60 for marathon and £46 for half marathon; standard prices apply.
Yes — register 10 runners and pay for 8; register 20 runners and pay for 15; register 50 runners and pay for 35. Contact tom@relishrunningraces.com for a group registration link.
Marathon and half marathon: 16+. 10km: 14+. 5km/Colourburst: 10+. Those under 16 must be accompanied by an adult at the finish.
Charity places are available — contact tom@relishrunningraces.com for details about fundraising and booking.
Last updated: Jun 5, 2026, 08:11:19 PM
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