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Easiest way to use an online mapping app to trace a historic road trip route Illustration

Easiest way to use an online mapping app to trace a historic road trip route

Written by Nikhil Badjatya
Direct Summary:

The reliable division of labor for a historic road trip is: use an AI assistant to brainstorm and research which historic sites, towns, or landmarks belong on your route, then build and drive the actual route in a real mapping app (Google Maps or Apple Maps), both of which support multi-stop custom routes with live traffic and turn-by-turn navigation. Don't ask an AI chatbot to calculate driving distances or times itself — language models are unreliable at precise mileage and don't have access to live road/traffic conditions.

"The only source of knowledge is experience."

— Albert Einstein

Key Insights

  • Both major map apps support multi-stop routes: Google Maps and Apple Maps both let you add multiple waypoints to a single route and reorder them, which is the actual mechanism for building a historic-sites road trip.
  • Don't trust an AI's stated mileage or drive time: a language model can state a plausible-sounding distance between two cities that's simply wrong — the mapping app's routing engine, which uses actual road network data, is the authoritative source.
  • AI is genuinely good at the research/curation step: "what historic sites are within 20 miles of Route 66 between Flagstaff and Albuquerque" is a reasonable AI research question — the routing and distances still belong to the map app.

Planning a historic road trip has two genuinely different sub-tasks that are easy to conflate: deciding what to see (research and curation — an AI assistant is useful here) and figuring out how to get there (routing, distance, drive time — this needs a real mapping engine with actual road network data, not a language model's estimate).

Splitting research from routing

1. Ask the assistant for candidate stops, not distances. "What are notable historic sites along a road trip from Chicago to New Orleans" is a good research question — it draws on general knowledge the model is actually likely to have reasonably correct.

2. Build the actual route in Google Maps or Apple Maps. Add each candidate stop as a waypoint, and let the app's routing engine calculate real distances, drive times, and suggest a sensible stop order — this is what those tools are built to do accurately.

3. Cross-check anything the assistant claimed about a place. If it told you a site is "10 minutes off the highway," verify that in the map app before committing — treat the AI's spatial claims as a starting hypothesis, not a fact.

roadtrip_prompt.md 
# Good: a research question the assistant can reasonably answer
What are 5-6 notable historic sites or landmarks along a
road trip route from Chicago to New Orleans, roughly
following the Mississippi River?

# Risky: asking the assistant to do the map app's job
# (don't trust the mileage/time it states here)
What's the exact driving distance and time between each stop?
Task Right Tool Why
Deciding which historic sites to visit AI assistant (research/brainstorming) Draws on general historical/geographic knowledge reasonably well
Calculating distance, drive time, stop order Google Maps / Apple Maps Uses actual road network and live traffic data; a language model has neither

The failure mode to avoid is asking one tool to do the other's job: an AI chatbot confidently stating "it's a 3-hour drive" when it's actually 5, or a map app having no opinion on which detour is historically interesting. Use each tool for what it's actually built to do well.

Practical Challenge

Ask an assistant for 5 historic stops along a route you're planning, then add all 5 as waypoints in Google Maps or Apple Maps and compare the app's suggested stop order to your own intuition.

Concept Check

Why shouldn't you rely on an AI chatbot's stated driving distance or travel time between two road trip stops?
Correct! Routing requires actual road-network and traffic data that a language model doesn't have — that's exactly what dedicated mapping apps are built to calculate accurately.
Incorrect. Try again! The issue is data access, not any restriction — mapping apps have the real routing data a chat model lacks.

Sources & Further Reading

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