Progression

Year/age – 1500m, 3000m, 5000m, 10,000m, half marathon, marathon
1988 (14): 4:41.0
1989 (15): 4:34.9
1990 (16): 4:31.3, 9:41.4
1991 (17): 4:23.68, 9:23.39
1992 (18): 4:16.82, 8:51.28, 16:16.77
1993 (19): 4:11.6, 8:40.20
1994 (20): 4:23.84
1995 (21): 4:06.84, 8:40.82, 14:49.27
1996 (22): 4:08.42+, 8:37.07, 14:46.76
1997 (23): 4:06.93, 8:35.28, 14:45.51
1998 (24): 4:05.81, 8:38.84, 14:51.27, 30:48.58
1999 (25): 4:06.71, 8:27.40, 14:43.54, 30:27.13, 69:37
2000 (26): 4:11.45, 8:28.85, 14:44.36, 30:26.97, 67:07
2001 (27): 4:05.37, 8:26.97, 14:44.21, 30:55.80, 66:47
2002 (28): 4:13e, 8:22.20, 14:31.42, 30:01.09, 69:01+, 2:17:18
2003 (29): – , – , – , – , 65:40, 2:15:25
2004 (30): – , 8:39.08+, 14:29.11, 30:17.15, 70:51+, 2:23:10
2005 (31): 4:13.13, 8:50.18, 15:16.29+, 30:42.75, 68:27+, 2:17:42
2006 (32): – .
2007 (33): – , – , – , – , 67:53, 2:23:09
2008 (34): – , – , – , – , 73:23+, 2:23:56
2009 (35): – , – , – , – , 69:45, 2:29:27
2010 (36): – .
2011 (37): – , – , – , – , 70:30+, 2:23:46
2012 (38): – , – , – , – , 72:03