OSM cycle maps tend to show all cycle paths/sustrans routes.
But you'll never know if they are passable on a bent trike or not until you try to use them.
As for a route planner, I like/use BikeHike, http://www.bikehike.co.uk/mapview.php.
It's easy to swop between Google and OSM cycle maps, with a side view of OS maps.
Ah I didn't know about the wireless transfer thing to be honest - I thought the differences paralleled the 20 and 30. I know I could google the wireless thing but in the interests of chucking the info into the thread can I ask what sort of wireless/whether it works well? I agree that wireless is no great issue when you are with a PC/chromebook or whatever but I have been experimenting in the tent with hooking my Etrex20 to an android tab. This can be slightly tricky due to power considerations and oddities of some android tabs, even using a special lead and a powerbank.I'm with Blue Hills here, you're better off with the 20x. The only things the 30x has over it are a wireless transfer thingy, an electronic compass and an altitude thingybob. A hundred quid extra just for those? Pfft.
I transfer my data to the PC with a usb cable. This powers the 20 while doing so and so isn't sucking the batteries dry needlessly.
The 20 suffers from compass wander when stationary which the 30 doesn't but once you're on the move the 20 re-positions itself.
Unless you're literally flying on the bike, the altitude thingybob is pointless. It uses barometric pressure to get that data and as far as I'm aware, isn't terribly accurate.
I do prefer the colour of the 30 though but should the 20 jump from it's mount it'll be easier to find.
Make sure if you buy a bracket for the unit that it's not some cheap Chinese copy of Garmins own as they are reported to have many 20's and 30's launching through the air.
The one you need is this.......https://www.amazon.co.uk/gp/product/B0012MI7QE/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Congratulations. Now the fun begins - it's an excellent device but it takes a lot of learning.i got the
eTrex 30x GPS BirdsEye Select
from cotswold outdoor store Milton Keynes for £190 and the bike mount for a tenner whilst there and it has 2 yr guarantee. I like it and am playing around with it atm. I had a spendy day today as i got rid of some radio receivers i don't use so i thought the trike would benefit lol
Go Outdoors doesn't stock the 30x is it a new model?
They have etrex touch 25 and 35 for £290 / £330. What's the difference?
BTW the 25 and 35 are with full UK OSGB 50k scale maps. Don't sell without maps weigh probably explains the 5 in the name and extra price.