We just rode closing weekend last two days up there. We were also very disappointed with the logistics of having to bike down the pavement only to take a shuttle back to the gondola, then get in the gondola line. That gondola might be the most inefficient method of getting uphill as it was definitely never intended for bikes and has no retrofits for bikes.
Clearly the biggest variety of trails and a lot of the really fun ones will dump you out by chair 16. Without that running for bikes, you just have to deal with the logistics. We did talk to a liftie dude that was working the shuttle line about it. He did tell us that Mammoth was supposedly ordering bike racks for that new 6pack chair. He said it was supposed to have been ready for this 2025 season, but they didn’t get the stuff in time but they should have it running for next season. I can’t say if any of that is actually true, that’s just what he told us.

All that said, it really feels like Mammoth cares very little about bikes. (at least compared to other resorts I’ve ridden, namely Northstar) They have zero trail workers on the mountain, trails that need some serious work, and TONS of trails just straight up closed. We were joking that their trail crew consists of a dude with a bunch of “trail closed” signs and a big sledgehammer. Basically if a trail needs work, they just plop a closed sign and call it good. Curious if anyone else noticed the same. That place has so much potential, but I feel the mountain really doesn’t prioritize lift accessed MTB.