Well there are plenty of people here to talk to

Would your husband and sister do a relay with you just to get them feeling involved? I did this with my two sisters - they were coming to visit and I thought that watching me do a triathlon would be boring for them, so I changed my entry to a relay; baby sister swam, little sister ran and I did the cycle leg.
This year, little sister came out to visit, did the whole triathlon and beat me, grrrrrr.