
Trek to the Lost City
7 Mar 2025 - 16 Mar 2025 OR 20 Sep 2025 - 29 Sep 2025
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Walking is a fantastic way to exercise with axial SpA. Whether you walk, hike, go for 10 miles or 100 miles, every penny you raise will help support people with axial SpA with the help of NASS.

7 Mar 2025 - 16 Mar 2025 OR 20 Sep 2025 - 29 Sep 2025
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26 Apr 2025 - 5 May 2025 OR 6 Sep 2025 - 15 Sep 2025 OR 11 Oct 2025 - 20 Oct 2025
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22 Feb 2025 - 28 Feb 2025 OR 4 Oct 2025 - 10 Oct 2025
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1 May 2025 - 5 May 2025 OR 25 Sep 2025 - 29 Sep 2025
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Sat 25 & Sun 26 January 2025 (Full, Half Marathon,10K or Sunday Family Fun 5K)
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Sat 29 March 2025 (50 km, 25 km or 10 km)
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Sat 12 April 2025 (50 km or 25 km or 10 km Loop)
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3 - 4 May 2025 (106km & 50 / 53km & 25km Options +10 Mile Option)
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17-18 May 2025 (100 & 75 & 50 & 25 & 10 km)
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24-25 May 2025 (100km, 75km, 1/2, Marathon & 25km)
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7-8 June 2025 (100km & 50km, 25km, & Marathon, 10K option)
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21-22 June 2025 (100, 75, 50, 25 KM Options)
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28 - 29 June 2025 (100, 75, 50 & 25 km & Bakewell 10 mile)
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19 - 20 July 2025 (100km, 50km, Marathon, 25km & 10K)
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Sat 12 July 2025 (50 km Loop + 25 km & 10K)
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Sat 2 August 2025 (50 km Loop + 25 km & 10K)
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Sat 23 August 2025 (50km, 25km or 10km loop)
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6 - 7 September 2025 (100km, 50km & 25km Options)
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13-14 September 2025 (100 & 75 & 50 & 25km)
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Sat 13 September 2025 (25 km & 16 Bridges + New 'Thames 10K' option)
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Friday 13 September 2024 (10 miles or 10 km)
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Sat 27 September 2025 (50 km Loop + 25 km & 10K)
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Sat 12 October 2025 (50 km Loop + 25 km & 10K)
Sign me upFill in the form below to receive your welcome email and supporters’ pack to get you started on your fundraising journey. We’ll support you every step of the way.
If you have any questions about challenge events, please email fundraising@nass.co.uk or call 020 8741 1515 and press option 2.

“I have come across people who are thriving, struggling, and somewhere in-between. I have been in all three camps since having been diagnosed. I know what it’s like to feel desperate, vulnerable, lost (and worse) because of this condition.”
Read Mark's story
Get inspired by reading more stories of others affected by axial SpA who have chosen to fundraise to support people with axial SpA.
Read more stories
Find out why your support really does matter, the impact your support can have, and why your support has never been more urgent.
Find out more1 in 200 of the adult population in the UK have axial SpA (AS). That's twice as many as multiple sclerosis and Parkinson's disease.
Axial SpA (AS) is a condition that affects young people. Symptoms start late teens to early twenties, with the average age of onset being 26.
The current average delay to diagnosis from when symptoms start is 8.5 years, by which irreversible damage to the spine may have occurred.
59% of people with axial SpA (AS) report experiencing mental health problems compared to 25% of those with musculoskeletal conditions overall.