Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Race name | Dist (miles) | Course | Prize | Jockey | Odds | Runners |
| --- | --- | --- | --- | --- | --- | --- |
| Great Subscription Purse | 4 | York | £160 5s | Christopher Jackson | 1/2 | 3 |
| not known | not known | Morpeth | £50 | not known | not known | not known |
| Ladies' Plate | 4 | York | 126 gs | not known | not known | not known |
| Ladies' Plate | not known | Lincoln | £80 | not known | not known | not known |
| Unnamed race | not known | Morpeth | £50 | none | not known | walkover |
| Unnamed race | 4m 1.5f | Newmarket | £50 | not known | £4/£5 6s | 4 |
| Open race | not known | York | £20 | none | none | no entries |
| Match race | 4 m 1.5f | Newmarket | 200 gs | John Singleton | 1/2 | 2 |
| Jockey Club Plate | not known | Newmarket | not known | not known | 2/1 first heat | 6 |
| Unnamed race | not known | Newcastle | 60 gs | not known | not known | 3 |
| Jockey Club Plate | not known | Newmarket | not known | not known | 10/1 | 5 |
| Unnamed race | not known | Scarborough | £50 | not known | 10/1 | 3 |
Question:
What is the distance for the unnamed race with 3 runners at Newcastle?
Answer:
not known