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@hippy
F1 means nothing to me. People keep saying it's fast but I can't even tell where to turn. Where is Girtford Underpass on a map?
COURSE F1/100 100 miles (Revised 2009)
START On B1043 about 0.4 ml north of Tempsford flyover.
Just north of road to Everton, 10yds north of kerb start, and 77 yds south of large green sign. (GR163531 )
Proceed southwards, at RAB on flyover turn right, over A1, left at next RAB, down slip rd , left at T-jn onto A1 northbound..
Northwards on A1, and continue over Black Cat RAB to
TURN (10.85 mls) at Buckden RAB. Retrace on A1 southbound, straight on at Black Cat Rab to
BEAR LEFT ( 22.24 mls) at Girtford U/Pass..Through underpass and under A1 Retrace on A1 northbound, straight on at Black Cat Rab to
TURN (33.89 mls) at Buckden Rab. Retrace on A1 southbound, straight on at Black Cat Rab, Girtford U/pass and Sandy Rab to
TURN (48.83 mls) at Nth Biggleswade RAB. Retrace on A1 northbound , straight on at Sandy RAB and Black Cat RAB to
TURN (63.84 mls) at Buckden RAB. Retrace on A1 southbound, straight on at Black Cat RAB and Sandy RAB to
TURN (78.78 mls) at Nth Biggleswade RAB. Retrace on A1 northbound , straight on at Sandy RAb to Black Cat RAB
TURN LEFT (85.72 mls) take 2nd exit, onto westbound A421, to
BEAR LEFT (89.83 mls) at Renold flyover (the first flyover) onto old A421, thru Gt Barford, onto Black Cat RAB to
TURN LEFT (94.52 mls) take 1st exit onto westbound A421 to
BEAR LEFT (98.63 mls) at Renold flyover onto old A421
FINISH About ½ mile before Great Barford X-rds, 10 yds west of tree, 40 yds before (west of) large disused layby. (GR 122517)