There is no elite field in ultras, only in big road races. Look at the PR-s for the elite guys here: https://www.baa.org/john-hancock-announces-2019-boston-mara

There is no elite field in ultras, only in big road races. Look at the PR-s for the elite guys here: https://www.baa.org/john-hancock-announces-2019-boston-marathon-elite-team https://www.baa.org/john-hancock-announces-2019-boston-marat... . The slowest one has a 2:13 which is below women's world record and 6 minutes faster than any of the elite women.