What will my marathon time be?

As May approaches, I sometimes wonder what my marathon time will be. I've always had "4 hours" as this vague number in my head that seems reasonable. But the more 7 minute kilometers that I run, the more I think that 4 hours, while very attainable, isn't very realistic for me for a 42 kilometer distance.

At a 7 min/km pace, 42 km takes 4:54... that's a long, long ways off of 4 hours! And while I did manage to do 21 km in 2:05 last year, I haven't really had any runs this year where I've managed that pace over a long run.

Only time will tell!