Day trip with guide from Prague to Turnov

Karen, I can't answer your specific question, but I'm curious about why you feel having a tour guide for this excursion is necessary. I believe you can take a train from Prague to Turnov in under 2 hours, or rent a car and drive in under 1 hour.

Do you feel a guide would help you explore Turnov? Or simplify your travel between Prague and Turnov? Or help you with your ancestry research?

Unless you have a specific need for a tour guide, it seems like it would be easy enough to make this day trip independently. Just a thought.

I'm heading to Prague for 4 nights at the beginning of April, and considering some options for a day trip if I decide I have time and a desire to get out into the countryside. So I'm always happy to read about places where other people are going. You've given me another option to consider. Thanks!

http://www.infocentrum-turnov.cz/dr-en/1978-turnov-town-information-centre.html
I would contact the tourist office in Turnov. I have been there a few times first time about 25 years ago and again about 18 months ago to do some walking in the area.I would have been there again a few months ago but there is a lot of work being done on the train tracks in the area and making 3 connections just to get there meant too much time would have used up for my day trip.If travelling by train then check that there are direct trains

lane, you might find this useful.
https://en.mapy.cz/zakladni?planovani-trasy&x=15.2004184&y=50.5817743&z=12&rc=9iMfJx-aW39iCxnx-oGn&rs=muni&rs=pubt&ri=2713&ri=15213102&mrp=%7B%22c%22%3A132%7D&rt=&rt=&xc=%5B%5D
you can take a local train from Turnov to Hruba Skala and walk back to Turnov, takes about 3 hours but longer if you go into some of the litlle view points along the way or stop for a few refreshments. the last bit going into Turnov itself got me a bit lost but with the help of Google maps on my phone I made it ok.

Thank you for the tip, Unclegus!