Table:
text: Matchem
Summary
Summary
Race_name Dist_miles Course Prize Jockey Odds Runners
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

text: Matchem
Summary
Summary
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

Question: What is the distance for the unnamed race under matchem with 3 runners at Newcastle?