In and around Las Vegas
Harry Reid International (LAS) is 15 minutes from the Strip; official taxi $25 to $35, Uber $15 to $25, RTC Centennial Express bus $6. The Las Vegas Monorail runs $6 per ride or $15 day pass along the east side of the Strip — useful if your hotel is on it (MGM, Bally's, Flamingo, Harrah's, Convention Center, Westgate, Sahara). The Deuce bus runs the full Strip plus downtown 24 hours, $8 for 24-hour pass. Uber and Lyft are everywhere; expect $15 to $30 surges Friday and Saturday nights.
Between cities
Vegas to Reno is 440 miles and eight hours by car — flying makes more sense at $60 to $150. Vegas to LA is 4.5 hours on I-15 (add two hours on peak Sunday returns). Vegas to the Grand Canyon South Rim is 4.5 hours, North Rim closer at 3.5. Vegas to Zion is 2.5 hours, Bryce is 4. Amtrak does not directly serve Vegas — you connect via bus from Los Angeles or Kingman. Greyhound and FlixBus run Vegas-LA for $30 to $70. Rent a car for anything beyond city limits — the state runs on cars.
Good to know
Do I need a car in Las Vegas?+
No if you are staying on the Strip and hitting standard tourist sights. Yes for day trips, Henderson, Summerlin or if you value time over $30 Ubers.
Is the monorail worth it?+
Only if your hotel connects to a station. Otherwise walking or Uber is faster since it runs behind the resorts, not through them.