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BOSTON MARATHON 2023

Kathryn Segien

Bib: 25984•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:37
Rank: #23077
Start → 5K
30:37 | 9:51/mi
10K· 6.21 mi
59:54
Rank: #22727 (+350)
5K → 10K
29:17 | 9:26/mi
15K· 9.32 mi
1:30:24
Rank: #22875 (-148)
10K → 15K
30:30 | 9:49/mi
20K· 12.43 mi
2:02:56
Rank: #23174 (-299)
15K → 20K
32:32 | 10:28/mi
Half· 13.11 mi
2:12:04
Rank: #23579 (-405)
20K → Half
9:08 | 13:23/mi
25K· 15.53 mi
2:41:15
Rank: #23928 (-349)
Half → 25K
29:11 | 12:02/mi
30K· 18.64 mi
3:21:03
Rank: #24328 (-400)
25K → 30K
39:48 | 12:49/mi
20M
3:39:17
Rank: #24481 (-153)
30K → 20M
18:14 | 13:25/mi
21M
3:55:26
Rank: #24725 (-244)
20M → 21M
16:09 | 16:09/mi
35K· 21.75 mi
4:05:16
Rank: #24770 (-45)
21M → 35K
9:50 | 13:09/mi
23M
4:22:09
Rank: #24848 (-78)
35K → 23M
16:53 | 13:29/mi
24M
4:36:24
Rank: #24988 (-140)
23M → 24M
14:15 | 14:15/mi
40K· 24.85 mi
4:48:24
Rank: #25052 (-64)
24M → 40K
12:00 | 14:02/mi
25.2M
4:53:49
Rank: #25073 (-21)
40K → 25.2M
5:25 | 15:42/mi
Finish· 26.22 mi
5:06:03
Rank: #25085 (-12)
25.2M → Finish
12:14 | 12:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:12:04
Pace10:04 /mi
2nd Half
Distance13.11 mi
Time2:53:59
Pace13:16 /mi
📊Positive Split: 31.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:4930:379:5130:37
9:51
-
10K
6.21 mi12:16:0659:549:3829:17
9:26
-0:25
15K
9.32 mi12:46:361:30:249:4230:30
9:49
+0:23
20K
12.43 mi13:19:082:02:569:5432:32
10:28
+0:39
Half
13.11 mi13:28:162:12:0410:049:08
13:23
+2:55
25K
15.53 mi13:57:272:41:1510:2329:11
12:02
-1:21
30K
18.64 mi14:37:153:21:0310:4739:48
12:49
+0:47
20M
20.00 mi14:55:293:39:1710:5818:14
13:25
+0:36
21M
21.00 mi15:11:383:55:2611:1316:09
16:09
+2:44
35K
21.75 mi15:21:284:05:1611:179:50
13:09
-3:00
23M
23.00 mi15:38:214:22:0911:2416:53
13:29
+0:20
24M
24.00 mi15:52:364:36:2411:3114:15
14:15
+0:46
40K
24.85 mi16:04:364:48:2411:3612:00
14:02
-0:13
25.2M
25.20 mi16:10:014:53:4911:405:25
15:42
+1:40
Finish
26.22 mi16:22:155:06:0311:4112:14
12:00
-3:42

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

9:26 /mi

Average Pace

11:41 /mi

Slowest Pace

16:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:21

54% of race

Time at Steady Pace

1:45:53

35% of race

Time at Slower Pace

35:49

12% of race

Average Pace: 11:40 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:46:4930:379:5130:37
9:51
#23077
10K
6.21 mi12:16:0659:549:3829:17
9:26
#22727
15K
9.32 mi12:46:361:30:249:4230:30
9:49
#22875
20K
12.43 mi13:19:082:02:569:5432:32
10:28
#23174
Half
13.11 mi13:28:162:12:0410:049:08
13:23
#23579
25K
15.53 mi13:57:272:41:1510:2329:11
12:02
#23928
30K
18.64 mi14:37:153:21:0310:4739:48
12:49
#24328
20M
20.00 mi14:55:293:39:1710:5818:14
13:25
#24481
21M
21.00 mi15:11:383:55:2611:1316:09
16:09
#24725
35K
21.75 mi15:21:284:05:1611:179:50
13:09
#24770
23M
23.00 mi15:38:214:22:0911:2416:53
13:29
#24848
24M
24.00 mi15:52:364:36:2411:3114:15
14:15
#24988
40K
24.85 mi16:04:364:48:2411:3612:00
14:02
#25052
25.2M
25.20 mi16:10:014:53:4911:405:25
15:42
#25073
Finish
26.22 mi16:22:155:06:0311:4112:14
12:00
#25085
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi230779438943823102(Top 87%)9403(Top 82%)9403(Top 193%)
10K6.21 mi3.10 mi22727+3509214+2249214+22422296(Top 84%)8980(Top 79%)8980(Top 184%)
15K9.32 mi3.11 mi22875-1489277-639277-6323102(Top 87%)9403(Top 82%)9403(Top 193%)
20K12.43 mi3.11 mi23174-2999446-1699446-16923792(Top 89%)9797(Top 86%)9797(Top 201%)
Half13.11 mi0.68 mi23579-4059651-2059651-20526445(Top 99%)11333(Top 99%)11333(Top 232%)
25K15.53 mi2.42 mi23928-3499861-2109861-21025192(Top 95%)10624(Top 93%)10624(Top 218%)
30K18.64 mi3.11 mi24328-40010112-25110112-25125263(Top 95%)10716(Top 94%)10716(Top 219%)
20M20.00 mi1.36 mi24481-15310201-8910201-8925484(Top 96%)10852(Top 95%)10852(Top 222%)
21M21.00 mi1.00 mi24725-24410347-14610347-14626262(Top 99%)11251(Top 98%)11251(Top 230%)
35K21.75 mi0.75 mi24770-4510376-2910376-2925672(Top 96%)10982(Top 96%)10982(Top 225%)
23M23.00 mi1.25 mi24848-7810432-5610432-5625488(Top 96%)10892(Top 95%)10892(Top 223%)
24M24.00 mi1.00 mi24988-14010521-8910521-8926170(Top 98%)11236(Top 98%)11236(Top 230%)
40K24.85 mi0.85 mi25052-6410560-3910560-3925710(Top 97%)11030(Top 97%)11030(Top 226%)
25.2M25.20 mi0.35 mi25073-2110576-1610576-1626027(Top 98%)11176(Top 98%)11176(Top 229%)
Finish26.22 mi1.02 mi25085-1210585-910585-925238(Top 95%)10787(Top 94%)10787(Top 221%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

23102

Females

9403

F18-39

9403

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

22296

Females

8980

F18-39

8980

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

23102

Females

9403

F18-39

9403

15K→20K

9.3 - 12.4 mi

Top 89%
×5stories
+106ft-86ft

Overall

23792

Females

9797

F18-39

9797

20K→Half

12.4 - 13.1 mi

Top 99%
×2stories
+19ft-37ft

Overall

26445

Females

11333

F18-39

11333

Half→25K

13.1 - 15.5 mi

Top 95%
×4stories
+66ft-88ft

Overall

25192

Females

10624

F18-39

10624

25K→30K

15.5 - 18.6 mi

Top 95%
×9stories
+181ft-148ft

Overall

25263

Females

10716

F18-39

10716

30K→20M

18.6 - 20.0 mi

Top 96%
×5stories
+64ft-50ft

Overall

25484

Females

10852

F18-39

10852

20M→21M

20.0 - 21.0 mi

Top 99%
×8stories
+106ft-24ft

Overall

26262

Females

11251

F18-39

11251

21M→35K

21.0 - 21.8 mi

Top 96%
×7stories
+17ft-86ft

Overall

25672

Females

10982

F18-39

10982

35K→23M

21.8 - 23.0 mi

Top 96%
×5stories
+23ft-63ft

Overall

25488

Females

10892

F18-39

10892

23M→24M

23.0 - 24.0 mi

Top 98%
×6stories
+12ft-82ft

Overall

26170

Females

11236

F18-39

11236

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

25710

Females

11030

F18-39

11030

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

26027

Females

11176

F18-39

11176

25.2M→Finish

25.2 - 26.2 mi

Top 95%
×2stories
+22ft-21ft

Overall

25238

Females

10787

F18-39

10787

Passing Analysis

Category:
Athletes Passed
716
Passed By
2724
Net Change
-2008
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23077
5K → 10K451101+350#23077#22727
10K → 15K94242-148#22727#22875
15K → 20K55354-299#22875#23174
20K → Half1406-405#23174#23579
Half → 25K19368-349#23579#23928
25K → 30K27427-400#23928#24328
30K → 20M12165-153#24328#24481
20M → 21M2246-244#24481#24725
21M → 35K1055-45#24725#24770
35K → 23M1492-78#24770#24848
23M → 24M2142-140#24848#24988
24M → 40K973-64#24988#25052
40K → 25.2M425-21#25052#25073
25.2M → Finish1628-12#25073#25085
TOTALS7162724-2008
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing