as said build up to it. having done it on a few occasions geared (and off road more than once) take a few weeks before hand and cycle 60,70,80,90 etc. to reach you goal. if you aclimatise you should not have any problems. i regularly put in +60 miles on a relaxing ride but know that +100 takes alot of extra effort.
everybody is different with how far they can ride straight off you need to find you limit then work on it to extend your stamina.
eat lots of fast burning foods like fruit and glucose whilst riding and build slow burning carbs from pasta in advance of cycling. if your going over the 6 hour limit (which you are) stop and have some proper food dont just depend on sugers.
as said build up to it. having done it on a few occasions geared (and off road more than once) take a few weeks before hand and cycle 60,70,80,90 etc. to reach you goal. if you aclimatise you should not have any problems. i regularly put in +60 miles on a relaxing ride but know that +100 takes alot of extra effort.
everybody is different with how far they can ride straight off you need to find you limit then work on it to extend your stamina.
eat lots of fast burning foods like fruit and glucose whilst riding and build slow burning carbs from pasta in advance of cycling. if your going over the 6 hour limit (which you are) stop and have some proper food dont just depend on sugers.