Mostly suburban streets and a section of pathway. The street lights are shrouded by old trees for much of the suburban part.
The basic commute is only 4.5 kilometers. The increased need comes if I want to get a swim in before work, which triples the distance and includes a completely unlit and unpaved section between two paths. It's a goat track, really - for some reason the city has not extended the two paths to meet each other, and riding on the road between would mean going the wrong way into traffic.
Can an led light offer 200 or more lumens? I've heard that a single high intensity led can actually be better than multiple leds packed into a headlight. I've gotten by with two multi-led headlights either side of the stem, one aimed low, the other a bit higher, but have had to slow down quite a bit to see properly.