diff --git a/python/fastsim/simdrive.py b/python/fastsim/simdrive.py
index 196763415..1ee94abdf 100644
--- a/python/fastsim/simdrive.py
+++ b/python/fastsim/simdrive.py
@@ -209,7 +209,7 @@ def __init_objects__(self, cyc: cycle.Cycle, veh: vehicle.Vehicle):
 
     def init_arrays(self):
         self.i = 1  # initialize step counter for possible use outside sim_drive_walk()
-        cyc_len = self.cyc.len
+        cyc_len = len(self.cyc)
 
         # Component Limits -- calculated dynamically
         self.cur_max_fs_kw_out = np.zeros(cyc_len, dtype=np.float64)
@@ -487,7 +487,7 @@ def activate_eco_cruise(
         params = self.sim_params
         params.idm_allow = True
         if not by_microtrip:
-            if self.cyc0.len > 0 and self.cyc0.time_s[-1] > 0.0:
+            if len(self.cyc0) > 0 and self.cyc0.time_s[-1] > 0.0:
                 params.idm_v_desired_m_per_s = self.cyc0.dist_m.sum() / self.cyc0.time_s[-1]
             else:
                 params.idm_v_desired_m_per_s = 0.0
diff --git a/python/fastsim/tests/test_simdrive.py b/python/fastsim/tests/test_simdrive.py
index bec2fdcaf..90647e48a 100644
--- a/python/fastsim/tests/test_simdrive.py
+++ b/python/fastsim/tests/test_simdrive.py
@@ -262,12 +262,12 @@ def test_that_vehdb_single_files_simulate(self):
         if USE_PYTHON:
             sd = simdrive.SimDrive(cyc, veh)
             sd.sim_drive()
-            self.assertEqual(sd.i, sd.cyc0.len)
+            self.assertEqual(sd.i, len(sd.cyc0))
 
         if USE_RUST:
             sd = simdrive.RustSimDrive(cyc.to_rust(), veh.to_rust())
             sd.sim_drive()
-            self.assertEqual(sd.i, sd.cyc0.len)
+            self.assertEqual(sd.i, len(sd.cyc0))
 
 class TestSimDriveVec(unittest.TestCase):
     def test_sim_drive_vec(self):
diff --git a/rust/fastsim-core/src/cycle.rs b/rust/fastsim-core/src/cycle.rs
index 0e1daa879..39a2e2b3f 100644
--- a/rust/fastsim-core/src/cycle.rs
+++ b/rust/fastsim-core/src/cycle.rs
@@ -494,6 +494,10 @@ impl RustCycleCache {
         }
     }
 
+    pub fn __len__(&self) -> usize {
+        self.len()
+    }
+
     #[allow(clippy::type_complexity)]
     pub fn __getnewargs__(&self) -> (Vec<f64>, Vec<f64>, Vec<f64>, Vec<f64>, &str) {
         (self.time_s.to_vec(), self.mps.to_vec(), self.grade.to_vec(), self.road_type.to_vec(), &self.name)
@@ -606,11 +610,6 @@ impl RustCycleCache {
         self.dt_s().to_vec()
     }
     #[getter]
-    /// cycle length
-    pub fn get_len(&self) -> usize {
-        self.len()
-    }
-    #[getter]
     /// distance for each time step based on final speed
     pub fn get_dist_m(&self) -> Vec<f64> {
         self.dist_m().to_vec()