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BOSTON MARATHON 2023

Karen Smith

Bib: 9577•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 38%
Gender (Female)
#0 / 11423
Top 19%
Division (F18-39)
#0 / 4884
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:04
Rank: #6902
Start → 5K
22:04 | 7:06/mi
10K· 6.21 mi
44:09
Rank: #7158 (-256)
5K → 10K
22:05 | 7:06/mi
15K· 9.32 mi
1:07:07
Rank: #7762 (-604)
10K → 15K
22:58 | 7:24/mi
20K· 12.43 mi
1:30:42
Rank: #8243 (-481)
15K → 20K
23:35 | 7:35/mi
Half· 13.11 mi
1:35:50
Rank: #8340 (-97)
20K → Half
5:08 | 7:31/mi
25K· 15.53 mi
1:54:21
Rank: #8524 (-184)
Half → 25K
18:31 | 7:38/mi
30K· 18.64 mi
2:19:08
Rank: #8864 (-340)
25K → 30K
24:47 | 7:59/mi
20M
2:30:17
Rank: #9057 (-193)
30K → 20M
11:09 | 8:12/mi
21M
2:39:21
Rank: #9330 (-273)
20M → 21M
9:04 | 9:04/mi
35K· 21.75 mi
2:45:20
Rank: #9427 (-97)
21M → 35K
5:59 | 8:00/mi
23M
2:55:49
Rank: #9565 (-138)
35K → 23M
10:29 | 8:22/mi
24M
3:04:19
Rank: #9772 (-207)
23M → 24M
8:30 | 8:30/mi
40K· 24.85 mi
3:11:43
Rank: #9951 (-179)
24M → 40K
7:24 | 8:39/mi
25.2M
3:14:51
Rank: #9985 (-34)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:23:06
Rank: #10072 (-87)
25.2M → Finish
8:15 | 8:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:50
Pace7:19 /mi
2nd Half
Distance13.11 mi
Time1:47:16
Pace8:11 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:4622:047:0622:04
7:06
-
10K
6.21 mi11:09:5144:097:0622:05
7:06
0:00
15K
9.32 mi11:32:491:07:077:1222:58
7:24
+0:18
20K
12.43 mi11:56:241:30:427:1823:35
7:35
+0:11
Half
13.11 mi12:01:321:35:507:195:08
7:31
-0:04
25K
15.53 mi12:20:031:54:217:2218:31
7:38
+0:07
30K
18.64 mi12:44:502:19:087:2824:47
7:59
+0:21
20M
20.00 mi12:55:592:30:177:3111:09
8:12
+0:13
21M
21.00 mi13:05:032:39:217:359:04
9:04
+0:52
35K
21.75 mi13:11:022:45:207:365:59
8:00
-1:04
23M
23.00 mi13:21:312:55:497:3910:29
8:22
+0:22
24M
24.00 mi13:30:013:04:197:418:30
8:30
+0:08
40K
24.85 mi13:37:253:11:437:437:24
8:39
+0:09
25.2M
25.20 mi13:40:333:14:517:443:08
9:05
+0:26
Finish
26.22 mi13:48:483:23:067:458:15
8:06
-0:59

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

7:06 /mi

Average Pace

7:45 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:21

56% of race

Time at Steady Pace

50:10

25% of race

Time at Slower Pace

38:35

19% of race

Average Pace: 7:45 /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 mi10:47:4622:047:0622:04
7:06
#6902
10K
6.21 mi11:09:5144:097:0622:05
7:06
#7158
15K
9.32 mi11:32:491:07:077:1222:58
7:24
#7762
20K
12.43 mi11:56:241:30:427:1823:35
7:35
#8243
Half
13.11 mi12:01:321:35:507:195:08
7:31
#8340
25K
15.53 mi12:20:031:54:217:2218:31
7:38
#8524
30K
18.64 mi12:44:502:19:087:2824:47
7:59
#8864
20M
20.00 mi12:55:592:30:177:3111:09
8:12
#9057
21M
21.00 mi13:05:032:39:217:359:04
9:04
#9330
35K
21.75 mi13:11:022:45:207:365:59
8:00
#9427
23M
23.00 mi13:21:312:55:497:3910:29
8:22
#9565
24M
24.00 mi13:30:013:04:197:418:30
8:30
#9772
40K
24.85 mi13:37:253:11:437:437:24
8:39
#9951
25.2M
25.20 mi13:40:333:14:517:443:08
9:05
#9985
Finish
26.22 mi13:48:483:23:067:458:15
8:06
#10072
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi69026996999284(Top 35%)1548(Top 14%)1548(Top 32%)
10K6.21 mi3.10 mi7158-256774-75774-757511(Top 28%)895(Top 8%)895(Top 18%)
15K9.32 mi3.11 mi7762-604953-179953-1799284(Top 35%)1548(Top 14%)1548(Top 32%)
20K12.43 mi3.11 mi8243-4811136-1831136-18310034(Top 38%)1931(Top 17%)1931(Top 40%)
Half13.11 mi0.68 mi8340-971180-441180-4410464(Top 39%)2119(Top 19%)2119(Top 43%)
25K15.53 mi2.42 mi8524-1841269-891269-899840(Top 37%)1937(Top 17%)1937(Top 40%)
30K18.64 mi3.11 mi8864-3401432-1631432-16310709(Top 40%)2494(Top 22%)2494(Top 51%)
20M20.00 mi1.36 mi9057-1931531-991531-9911739(Top 44%)3124(Top 27%)3124(Top 64%)
21M21.00 mi1.00 mi9330-2731668-1371668-13713795(Top 52%)4373(Top 38%)4373(Top 90%)
35K21.75 mi0.75 mi9427-971723-551723-5512116(Top 46%)3479(Top 30%)3479(Top 71%)
23M23.00 mi1.25 mi9565-1381797-741797-7412400(Top 47%)3730(Top 33%)3730(Top 76%)
24M24.00 mi1.00 mi9772-2071923-1261923-12614472(Top 54%)4929(Top 43%)4929(Top 101%)
40K24.85 mi0.85 mi9951-1792040-1172040-11714270(Top 54%)4885(Top 43%)4885(Top 100%)
25.2M25.20 mi0.35 mi9985-342072-322072-3213018(Top 49%)4216(Top 37%)4216(Top 86%)
Finish26.22 mi1.02 mi10072-872129-572129-5712755(Top 48%)4079(Top 36%)4079(Top 84%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9284

Females

1548

F18-39

1548

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

7511

Females

895

F18-39

895

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9284

Females

1548

F18-39

1548

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10034

Females

1931

F18-39

1931

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10464

Females

2119

F18-39

2119

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9840

Females

1937

F18-39

1937

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

10709

Females

2494

F18-39

2494

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

11739

Females

3124

F18-39

3124

20M→21M

20.0 - 21.0 mi

Top 52%
×8stories
+106ft-24ft

Overall

13795

Females

4373

F18-39

4373

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12116

Females

3479

F18-39

3479

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

12400

Females

3730

F18-39

3730

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

14472

Females

4929

F18-39

4929

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

14270

Females

4885

F18-39

4885

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13018

Females

4216

F18-39

4216

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

12755

Females

4079

F18-39

4079

Passing Analysis

Category:
Athletes Passed
549
Passed By
3718
Net Change
-3170
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6902
5K → 10K107363-256#6902#7158
10K → 15K17621-604#7158#7762
15K → 20K29510-481#7762#8243
20K → Half4101-97#8243#8340
Half → 25K58242-184#8340#8524
25K → 30K82422-340#8524#8864
30K → 20M34227-193#8864#9057
20M → 21M25298-273#9057#9330
21M → 35K24121-97#9330#9427
35K → 23M51189-138#9427#9565
23M → 24M21228-207#9565#9772
24M → 40K28207-179#9772#9951
40K → 25.2M2155-34#9951#9985
25.2M → Finish48134-87#9985#10072
TOTALS5493718-3170
📊

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