Going out alone has one advantage that no group outing can match: it starts when you decide it starts. No messages, no waiting at the corner, no compromise on where to go. What it lacks is a reason, and that is what most of these ideas supply. They are daytime ideas, deliberately. Daylight makes everything here easier, from reading a plaque to finding your way back.
None of them need money or gear beyond shoes and a phone, and none of them need you to be fit, fast or brave.
A walk with a destination is a different thing from a walk. It doesn't matter how small the destination is.
You can't do these with company, or at least not well. They need the kind of attention that conversation eats.
Being outside alone doesn't have to mean moving. A bench is a fine place to spend twenty minutes if you give the twenty minutes a job.
If you have a free morning or afternoon and want it filled without thinking too hard, here is a plan. Adjust the distances to your legs.
Start by walking a kilometer before you eat or drink anything, then have breakfast or coffee somewhere you've never sat before. From there, head for the nearest water and follow it in one direction for as long as feels right, two kilometers or so. Turn inland and find the highest public point you can see. Sit there for ten minutes and do one of the sitting-down ideas above. Then come home a different way from how you went out, and bring back one small thing you didn't set out with.
That's roughly six kilometers and three hours, and it contains a walk, a meal, a view, a rest and a souvenir. Most days out with other people don't manage all five.
Solo doesn't mean secretive. If you're heading somewhere new, tell someone roughly where, and take a charged phone. Stick to daylight and to paths that are meant to be walked. The ideas on this page are chosen to work in ordinary streets, parks and paths; they don't need you to go anywhere you'd hesitate to be on your own.
A lot of people who like being outside alone still want someone to set the task. That's the gap RLQuest fills. Each morning it picks three to ten quests for you from a library of more than 2,700, fitted to your age, interests, the weather and the time you've said you have. A walking quest runs with your phone in your pocket. Photo quests are checked by looking at the photo, distance quests against the recorded route, and every walk uncovers new tiles on a hexagon map of where you've been. Every quest carries an age limit, a risk level and a night permission.
It's free to download for iPhone and Android, with a Premium subscription that adds more quests per day. The ideas above stand on their own; the app is for the mornings when you don't want to choose.