@jmbmkn The multi-modal bike+transit routing option was great, even though it didn’t offer turn-by-turn of the bike segment.
I believe Citymapper uses (or used?) the Cyclestreets.net bike routing algorithm (which uses OSM). Last I did a deep dive this seemed about as good as bike routes get - with quiet / medium / fast route options. I’ve been doing plenty of Valhalla experiments but am always looking for good client apps.
I’ll have a look at Cyclers, thanks!