The way to get good distance on the ice is to get a good push, good stroking, whatever is the best technique for the particular kind of stroking you're doing.
If you're doing swizzles, you will need to spread your feet apart on the ice and then bring them together, because that's the way that particular kind of stroking works. It makes a pattern like this on the ice:
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If you're doing wiggles, also called slaloms, another kind of two-foot stroking, with both feet going in the same direction at the same time, then you'll get better power if you keep your feet closer together. That makes a pattern like this:
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There's also something called half swizzles that's kind of like a cross between those two techniques. Check with your coach about what you're doing and what technique they recommend to do it efficiently.