The scarlet mormon butterfly (Papilio rumanzovia) uses mimicry to resemble other toxic butterfly species, deterring predators despite being beautifully harmless itself. Take on our 50k or 50m challenge and there will be no games with us, we’ll plant 30 trees for you.

This challenge can be for either 50k or 50 miles – and can be done in stages.

Your seeded medal, if you’ve ordered one, will be sent within 7 working days of your event deadline by 2nd class post.

RACE OPTIONS

Select whether you’re running, walking, cycling or rolling to compare your finish times like-for-like. To add a seeded medal if you complete the race, select ‘Add medal’ below (+£3.75 inc. postage).