Don't worry folks, we haven't suddenly turned into superwomen and made a last-minute entry into the London Marathon.
We will, however, be there on the day to show our support for the largest single annual fundraising event in the world - and the people that have put in months of training to take part and raise money for a good cause.
We'll be providing live coverage from the Marathon on our Twitter page @mumsnettowers.
Let us know who you're supporting and which charity they're running for (or indeed if you're participating!) and we'll give them a shout-out on our Twitter feed during the big day.
I'll be there supporting MrAmyMumsnet who is running to raise money for Target Ovarian Cancer. Do come and say hello if we cross paths.
Best of luck to you all!