You got the place. The job now is making the start line.
Whether it is a 10K or a marathon, most people who take a charity place and do not make it to race day are not stopped by the distance. They are stopped in the middle of the block by a calf or a knee, after training that asked too much too early. These are the plans that do not do that to you.
No signup to read them. No wall.
The risk is not that you are too slow. It is that you try too hard.
You have a cause, a fundraising page and people watching. That is a lot of motivation, and motivation is exactly what gets charity runners hurt. Every easy run becomes a bit quicker than it should be. Every long run becomes a test. Nothing is ever properly easy, so nothing is ever properly recovered, and the body files the bill somewhere in the middle of the block.
Zonna exists for that specific problem. It sets a zone for every session and holds you to it, which mostly means telling you to slow down on days you were planning to prove something. It is not the exciting version of training. It is the version that gets you to the start line.
Free plans, whatever you signed up for.
Every one of these is the real thing the engine builds, laid out week by week and free to read in full. No email, no signup.
Doing an ultra? There is no free 50K or 100K plan on this site. The app builds them, and that sits inside the trial and the paid tier. The advice on this page still holds, and holds harder: the further the race, the more of your week should be easy.
Mostly easy. One hard day. Every run zoned.
Most of it is easy on purpose
The majority of every plan is run at a conversational effort. That is not the plan being gentle with you, it is the plan working.
One quality session a week
From the build phase, one session a week asks something of you. One. The rest protects it.
Every run has a zone and a pace band
Derived from your inputs, not guessed, so "easy" is a number you can check rather than a feeling you can talk yourself out of.
A long run that builds you up
It climbs steadily and backs off on recovery weeks, instead of getting longer every single week until something gives.
What is free and what is not
Every plan linked above is free to read on this site, in full, with no signup. You can follow one from a screenshot and never pay us anything.
The app is the part that adapts. It sets your real heart-rate zones, moves sessions when your week changes, and tells you afterwards whether you actually held the zone. New accounts get two weeks of all of it. After that a free tier keeps the plan you built.
One thing worth knowing before you start rather than after: in the app, 5K, 10K and half marathon plans can be built on the free tier. Marathon and ultra plan generation sits inside the trial and the paid tier. You keep a plan you built during the trial either way.
The ones charity runners actually ask.
Start with the plan. Decide about the app later.
Read the whole thing, see how much of it is easy, and judge for yourself whether that looks like training you could actually hold down alongside a job and a fundraising target.