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BOSTON MARATHON 2023

Karen Smith

Bib: 18248•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 15%
Masters (Masters Women)
#0 / 6539
Top 6%
Division (F50-54)
#0 / 1207
Top 3%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:10
Rank: #12162
Start → 5K
24:10 | 7:47/mi
10K· 6.21 mi
47:15
Rank: #10957 (+1205)
5K → 10K
23:05 | 7:26/mi
15K· 9.32 mi
1:10:33
Rank: #10657 (+300)
10K → 15K
23:18 | 7:30/mi
20K· 12.43 mi
1:33:55
Rank: #10328 (+329)
15K → 20K
23:22 | 7:31/mi
Half· 13.11 mi
1:39:01
Rank: #10311 (+17)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:57:07
Rank: #9972 (+339)
Half → 25K
18:06 | 7:28/mi
30K· 18.64 mi
2:20:53
Rank: #9646 (+326)
25K → 30K
23:46 | 7:39/mi
20M
2:31:21
Rank: #9510 (+136)
30K → 20M
10:28 | 7:42/mi
21M
2:39:39
Rank: #9452 (+58)
20M → 21M
8:18 | 8:18/mi
35K· 21.75 mi
2:45:15
Rank: #9389 (+63)
21M → 35K
5:36 | 7:29/mi
23M
2:55:05
Rank: #9303 (+86)
35K → 23M
9:50 | 7:51/mi
24M
3:02:40
Rank: #9232 (+71)
23M → 24M
7:35 | 7:35/mi
40K· 24.85 mi
3:09:17
Rank: #9173 (+59)
24M → 40K
6:37 | 7:44/mi
25.2M
3:12:04
Rank: #9142 (+31)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
3:19:34
Rank: #9073 (+69)
25.2M → Finish
7:30 | 7:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:01
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:40:33
Pace7:40 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1024:107:4724:10
7:47
-
10K
6.21 mi11:38:1547:157:3623:05
7:26
-0:21
15K
9.32 mi12:01:331:10:337:3423:18
7:30
+0:04
20K
12.43 mi12:24:551:33:557:3323:22
7:31
+0:01
Half
13.11 mi12:30:011:39:017:335:06
7:29
-0:02
25K
15.53 mi12:48:071:57:077:3218:06
7:28
-0:01
30K
18.64 mi13:11:532:20:537:3323:46
7:39
+0:11
20M
20.00 mi13:22:212:31:217:3410:28
7:42
+0:03
21M
21.00 mi13:30:392:39:397:368:18
8:18
+0:36
35K
21.75 mi13:36:152:45:157:365:36
7:29
-0:49
23M
23.00 mi13:46:052:55:057:379:50
7:51
+0:22
24M
24.00 mi13:53:403:02:407:377:35
7:35
-0:16
40K
24.85 mi14:00:173:09:177:376:37
7:44
+0:09
25.2M
25.20 mi14:03:043:12:047:372:47
8:04
+0:20
Finish
26.22 mi14:10:343:19:347:377:30
7:22
-0:42

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

7:22 /mi

Average Pace

7:37 /mi

Slowest Pace

8:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:11:16

96% of race

Time at Steady Pace

8:18

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:37 /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 mi11:15:1024:107:4724:10
7:47
#12162
10K
6.21 mi11:38:1547:157:3623:05
7:26
#10957
15K
9.32 mi12:01:331:10:337:3423:18
7:30
#10657
20K
12.43 mi12:24:551:33:557:3323:22
7:31
#10328
Half
13.11 mi12:30:011:39:017:335:06
7:29
#10311
25K
15.53 mi12:48:071:57:077:3218:06
7:28
#9972
30K
18.64 mi13:11:532:20:537:3323:46
7:39
#9646
20M
20.00 mi13:22:212:31:217:3410:28
7:42
#9510
21M
21.00 mi13:30:392:39:397:368:18
8:18
#9452
35K
21.75 mi13:36:152:45:157:365:36
7:29
#9389
23M
23.00 mi13:46:052:55:057:379:50
7:51
#9303
24M
24.00 mi13:53:403:02:407:377:35
7:35
#9232
40K
24.85 mi14:00:173:09:177:376:37
7:44
#9173
25.2M
25.20 mi14:03:043:12:047:372:47
8:04
#9142
Finish
26.22 mi14:10:343:19:347:377:30
7:22
#9073
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi121622952295210180(Top 38%)1924(Top 17%)1924(Top 159%)
10K6.21 mi3.10 mi10957+12052301+6512301+6519898(Top 37%)1770(Top 15%)1770(Top 147%)
15K9.32 mi3.11 mi10657+3002142+1592142+15910180(Top 38%)1924(Top 17%)1924(Top 159%)
20K12.43 mi3.11 mi10328+3291990+1521990+1529481(Top 36%)1680(Top 15%)1680(Top 139%)
Half13.11 mi0.68 mi10311+171980+101980+1010070(Top 38%)1906(Top 17%)1906(Top 158%)
25K15.53 mi2.42 mi9972+3391838+1421838+1428542(Top 32%)1371(Top 12%)1371(Top 114%)
30K18.64 mi3.11 mi9646+3261739+991739+998310(Top 31%)1434(Top 13%)1434(Top 119%)
20M20.00 mi1.36 mi9510+1361710+291710+298235(Top 31%)1494(Top 13%)1494(Top 124%)
21M21.00 mi1.00 mi9452+581715-51715-59246(Top 35%)2023(Top 18%)2023(Top 168%)
35K21.75 mi0.75 mi9389+631706+91706+98488(Top 32%)1687(Top 15%)1687(Top 140%)
23M23.00 mi1.25 mi9303+861697+91697+98770(Top 33%)1917(Top 17%)1917(Top 159%)
24M24.00 mi1.00 mi9232+711690+71690+78309(Top 31%)1801(Top 16%)1801(Top 149%)
40K24.85 mi0.85 mi9173+591691-11691-18270(Top 31%)1852(Top 16%)1852(Top 153%)
25.2M25.20 mi0.35 mi9142+311684+71684+76996(Top 26%)1419(Top 12%)1419(Top 118%)
Finish26.22 mi1.02 mi9073+691680+41680+47533(Top 28%)1638(Top 14%)1638(Top 136%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10180

Females

1924

F50-54

1924

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

9898

Females

1770

F50-54

1770

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10180

Females

1924

F50-54

1924

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

9481

Females

1680

F50-54

1680

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10070

Females

1906

F50-54

1906

Half→25K

13.1 - 15.5 mi

Top 32%
×4stories
+66ft-88ft

Overall

8542

Females

1371

F50-54

1371

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8310

Females

1434

F50-54

1434

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8235

Females

1494

F50-54

1494

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

9246

Females

2023

F50-54

2023

21M→35K

21.0 - 21.8 mi

Top 32%
×7stories
+17ft-86ft

Overall

8488

Females

1687

F50-54

1687

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

8770

Females

1917

F50-54

1917

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8309

Females

1801

F50-54

1801

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8270

Females

1852

F50-54

1852

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

6996

Females

1419

F50-54

1419

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7533

Females

1638

F50-54

1638

Passing Analysis

Category:
Athletes Passed
3490*
Passed By
401
Net Change
+3089
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12162
5K → 10K124338+1205#12162#10957
10K → 15K36767+300#10957#10657
15K → 20K351*22+329#10657#10328
20K → Half3417+17#10328#10311
Half → 25K354*15+339#10311#9972
25K → 30K352*26+326#9972#9646
30K → 20M15519+136#9646#9510
20M → 21M10446+58#9510#9452
21M → 35K8118+63#9452#9389
35K → 23M12438+86#9389#9303
23M → 24M9726+71#9303#9232
24M → 40K9132+59#9232#9173
40K → 25.2M387+31#9173#9142
25.2M → Finish9930+69#9142#9073
TOTALS3490*401+3089

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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