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BOSTON MARATHON 2023

Katy Mcnamara

Bib: 27238•F

NC

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
26:26
Rank: #17610
Start → 5K
8:30/mi
26:26 split
10K· 6.21 mi
51:44
Rank: #16692 (+918)
5K → 10K
8:09/mi
25:18 split
15K· 9.32 mi
1:17:16
Rank: #16457 (+235)
10K → 15K
8:13/mi
25:32 split
20K· 12.43 mi
1:42:58
Rank: #16157 (+300)
15K → 20K
8:16/mi
25:42 split
Half· 13.11 mi
1:48:26
Rank: #16068 (+89)
20K → Half
8:01/mi
5:28 split
25K· 15.53 mi
2:08:46
Rank: #15965 (+103)
Half → 25K
8:23/mi
20:20 split
30K· 18.64 mi
2:36:04
Rank: #15951 (+14)
25K → 30K
8:47/mi
27:18 split
20M
2:48:20
Rank: #16014 (-63)
30K → 20M
9:02/mi
12:16 split
21M
2:57:57
Rank: #16020 (-6)
20M → 21M
9:37/mi
9:37 split
35K· 21.75 mi
3:04:44
Rank: #16100 (-80)
21M → 35K
9:04/mi
6:47 split
23M
3:16:42
Rank: #16290 (-190)
35K → 23M
9:33/mi
11:58 split
24M
3:26:07
Rank: #16450 (-160)
23M → 24M
9:25/mi
9:25 split
40K· 24.85 mi
3:34:16
Rank: #16518 (-68)
24M → 40K
9:32/mi
8:09 split
25.2M
3:37:37
Rank: #16515 (+3)
40K → 25.2M
9:43/mi
3:21 split
Finish· 26.22 mi
3:46:21
Rank: #16473 (+42)
25.2M → Finish
8:34/mi
8:44 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:26
Pace8:16 /mi
2nd Half
Distance13.11 mi
Time1:57:55
Pace9:00 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:0626:268:3026:26
8:30
-
10K
6.21 mi12:09:2451:448:2025:18
8:09
-0:21
15K
9.32 mi12:34:561:17:168:1725:32
8:13
+0:04
20K
12.43 mi13:00:381:42:588:1725:42
8:16
+0:03
Half
13.11 mi13:06:061:48:268:165:28
8:01
-0:15
25K
15.53 mi13:26:262:08:468:1720:20
8:23
+0:22
30K
18.64 mi13:53:442:36:048:2227:18
8:47
+0:24
20M
20.00 mi14:06:002:48:208:2512:16
9:02
+0:15
21M
21.00 mi14:15:372:57:578:289:37
9:37
+0:35
35K
21.75 mi14:22:243:04:448:306:47
9:04
-0:33
23M
23.00 mi14:34:223:16:428:3311:58
9:33
+0:29
24M
24.00 mi14:43:473:26:078:359:25
9:25
-0:08
40K
24.85 mi14:51:563:34:168:378:09
9:32
+0:07
25.2M
25.20 mi14:55:173:37:378:383:21
9:43
+0:11
Finish
26.22 mi15:04:013:46:218:388:44
8:34
-1:09

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

8:01 /mi

Average Pace

8:38 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:20

45% of race

Time at Steady Pace

1:21:31

36% of race

Time at Slower Pace

42:30

19% of race

Average Pace: 8:38 /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 mi11:44:0626:268:3026:26
8:30
#17610
10K
6.21 mi12:09:2451:448:2025:18
8:09
#16692
15K
9.32 mi12:34:561:17:168:1725:32
8:13
#16457
20K
12.43 mi13:00:381:42:588:1725:42
8:16
#16157
Half
13.11 mi13:06:061:48:268:165:28
8:01
#16068
25K
15.53 mi13:26:262:08:468:1720:20
8:23
#15965
30K
18.64 mi13:53:442:36:048:2227:18
8:47
#15951
20M
20.00 mi14:06:002:48:208:2512:16
9:02
#16014
21M
21.00 mi14:15:372:57:578:289:37
9:37
#16020
35K
21.75 mi14:22:243:04:448:306:47
9:04
#16100
23M
23.00 mi14:34:223:16:428:3311:58
9:33
#16290
24M
24.00 mi14:43:473:26:078:359:25
9:25
#16450
40K
24.85 mi14:51:563:34:168:378:09
9:32
#16518
25.2M
25.20 mi14:55:173:37:378:383:21
9:43
#16515
Finish
26.22 mi15:04:013:46:218:388:44
8:34
#16473
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi176106323632316001(Top 60%)5301(Top 46%)5301(Top 109%)
10K6.21 mi3.10 mi16692+9185705+6185705+61815861(Top 60%)5184(Top 45%)5184(Top 106%)
15K9.32 mi3.11 mi16457+2355563+1425563+14216001(Top 60%)5301(Top 46%)5301(Top 109%)
20K12.43 mi3.11 mi16157+3005399+1645399+16415445(Top 58%)4997(Top 44%)4997(Top 102%)
Half13.11 mi0.68 mi16068+895353+465353+4614589(Top 55%)4458(Top 39%)4458(Top 91%)
25K15.53 mi2.42 mi15965+1035312+415312+4115513(Top 58%)5151(Top 45%)5151(Top 105%)
30K18.64 mi3.11 mi15951+145340-285340-2815984(Top 60%)5489(Top 48%)5489(Top 112%)
20M20.00 mi1.36 mi16014-635400-605400-6016696(Top 63%)5969(Top 52%)5969(Top 122%)
21M21.00 mi1.00 mi16020-65428-285428-2816519(Top 62%)5923(Top 52%)5923(Top 121%)
35K21.75 mi0.75 mi16100-805497-695497-6918177(Top 68%)6929(Top 61%)6929(Top 142%)
23M23.00 mi1.25 mi16290-1905610-1135610-11318553(Top 70%)7152(Top 63%)7152(Top 146%)
24M24.00 mi1.00 mi16450-1605723-1135723-11318910(Top 71%)7389(Top 65%)7389(Top 151%)
40K24.85 mi0.85 mi16518-685779-565779-5618446(Top 69%)7178(Top 63%)7178(Top 147%)
25.2M25.20 mi0.35 mi16515+35783-45783-416235(Top 61%)6002(Top 53%)6002(Top 123%)
Finish26.22 mi1.02 mi16473+425770+135770+1315850(Top 60%)5729(Top 50%)5729(Top 117%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16001

Females

5301

F18-39

5301

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

15861

Females

5184

F18-39

5184

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16001

Females

5301

F18-39

5301

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

15445

Females

4997

F18-39

4997

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

14589

Females

4458

F18-39

4458

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

15513

Females

5151

F18-39

5151

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

15984

Females

5489

F18-39

5489

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

16696

Females

5969

F18-39

5969

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

16519

Females

5923

F18-39

5923

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

18177

Females

6929

F18-39

6929

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18553

Females

7152

F18-39

7152

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

18910

Females

7389

F18-39

7389

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18446

Females

7178

F18-39

7178

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16235

Females

6002

F18-39

6002

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

15850

Females

5729

F18-39

5729

Passing Analysis

Category:
Athletes Passed
2555
Passed By
1418
Net Change
+1137
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17610
5K → 10K100082+918#17610#16692
10K → 15K342107+235#16692#16457
15K → 20K34747+300#16457#16157
20K → Half967+89#16157#16068
Half → 25K18077+103#16068#15965
25K → 30K184170+14#15965#15951
30K → 20M68131-63#15951#16014
20M → 21M8288-6#16014#16020
21M → 35K36116-80#16020#16100
35K → 23M30220-190#16100#16290
23M → 24M28188-160#16290#16450
24M → 40K45113-68#16450#16518
40K → 25.2M3532+3#16518#16515
25.2M → Finish8240+42#16515#16473
TOTALS25551418+1137
📊

Passing Visuals

Category:
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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