I've got 186k on mine, my wife got it from her mother at 100k about 7 years ago. I had a Volvo 850 Turbo wagon go 265k before giving her up, and applied the maintenance records for that car for my expectations of the 4runner (about $1200 a year). The 4runner has not nearly cost that much, somewhere below $3000 for the whole 7 year period including oil changes and tires. It's been an extremely reliable car. The front suspension is getting crunchy, feels like the shock mounts are blown out but I know they haven't ever been changed.
It burns about a quart of oil every 7k miles, so it's totally fine right now but I might try and get the heads rebuilt at 200k. Runs great, it's essentially a perfect car.