Hello. This is my first post on forums so sorry for it being so blunt.
As an ironman Im lazy gathering resources and always look for alternatives in training so I train in unusual ways and wanted to share one of them with you.
For this you will need to own a house ( Right click on teleport to house select outside/ talk to estate agent and buy a house for 10m gp)
You should buy a formal garden next to your portal ( 750k gp)
Buy a saw and a hammer from estate agent as well as limestone bricks ( right click - trade supplies)
Right click portal - build mode
Right click on fence space and select stone wall Lvl 61 - You can only build 2 per trip since it takes 10 bricks each
In your normal spellbook right click on your house teleport select outside to teleport next to estate agent again
This is 10k xp with no bonuses for one build 15,6k xp with well on (4,2,m xp / hr no bonus) and (5m+ xp / hr with well on)
No materials gathering
3,15m gp for 1-99 construction calculating 1gp - 4,25 xp but a little less since you only unlock this at level 61.
Xp rates and xp per gp is calculated based on normal ironman xp rates
This is very click intensive