Summarise the Best Walks and Hikes Near UK Cities

You want a decent walk this weekend, not forty browser tabs of route research. This points you at the free tools that find routes by location and difficulty, the canal towpaths nobody uses, countryside within an hour of most UK cities, and how to judge a route before committing boots.

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You live in or near a UK city and want to find accessible walking and hiking routes without needing to travel far or spend time researching.
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<task>
Summarise practical walking resources and approaches for city-based walkers:
1. The best free resources for finding routes by location and difficulty
2. Canal towpaths: the urban walking network most people do not use
3. Accessible countryside within an hour of major UK cities
4. What to look for when assessing a route for a beginner
5. How to make a familiar route feel new
</task>

<output_format>
- One paragraph per point (40-60 words each)
- Resource list: 3 free tools or websites to bookmark
- Length: 250-320 words
- Tone: practical and inviting
</output_format>