Easier for you... my experience was the opposite - ran 2:50 for marathon down to 16:21 for 5K, but never broke a 5 minute mile.
Jeff Albertson wrote:
Sub-5 is loads easier than sub-3.
I ran my first sub-5 within 12 months of starting running. It took me 12 years to break 3:00.
I’m 35 now. I can break 5:00 with two months training at any time. Sub-3:00 would likely take me a 6 month buildup.