SplitType:
| "ascent_split"
| "descent_split"
| "interval_active"
| "interval_rest"
| "interval_warmup"
| "interval_cooldown"
| "interval_recovery"
| "interval_other"
| "climb_active"
| "climb_rest"
| "surf_active"
| "run_active"
| "run_rest"
| "workout_round"
| "rwd_run"
| "rwd_walk"
| "windsurf_active"
| "rwd_stand"
| "transition"
| "ski_lift_split"
| "ski_run_split"
| number