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BOSTON MARATHON 2023

Natasha Clay

Bib: 14971•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 31%
Gender (Female)
#0 / 11423
Top 11%
Division (F18-39)
#0 / 4884
Top 21%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:33
Rank: #10358
Start → 5K
23:33 | 7:35/mi
10K· 6.21 mi
46:37
Rank: #10051 (+307)
5K → 10K
23:04 | 7:25/mi
15K· 9.32 mi
1:09:25
Rank: #9597 (+454)
10K → 15K
22:48 | 7:20/mi
20K· 12.43 mi
1:32:13
Rank: #9154 (+443)
15K → 20K
22:48 | 7:20/mi
Half· 13.11 mi
1:37:07
Rank: #9084 (+70)
20K → Half
4:54 | 7:11/mi
25K· 15.53 mi
1:54:57
Rank: #8833 (+251)
Half → 25K
17:50 | 7:21/mi
30K· 18.64 mi
2:18:19
Rank: #8521 (+312)
25K → 30K
23:22 | 7:31/mi
20M
2:28:39
Rank: #8415 (+106)
30K → 20M
10:20 | 7:36/mi
21M
2:36:37
Rank: #8328 (+87)
20M → 21M
7:58 | 7:58/mi
35K· 21.75 mi
2:42:03
Rank: #8259 (+69)
21M → 35K
5:26 | 7:16/mi
23M
2:51:44
Rank: #8195 (+64)
35K → 23M
9:41 | 7:44/mi
24M
2:59:15
Rank: #8158 (+37)
23M → 24M
7:31 | 7:31/mi
40K· 24.85 mi
3:05:51
Rank: #8146 (+12)
24M → 40K
6:36 | 7:43/mi
25.2M
3:08:42
Rank: #8133 (+13)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:16:26
Rank: #8145 (-12)
25.2M → Finish
7:44 | 7:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:07
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:39:19
Pace7:35 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3523:337:3523:33
7:35
-
10K
6.21 mi11:15:3946:377:3023:04
7:25
-0:10
15K
9.32 mi11:38:271:09:257:2722:48
7:20
-0:05
20K
12.43 mi12:01:151:32:137:2522:48
7:20
0:00
Half
13.11 mi12:06:091:37:077:244:54
7:11
-0:09
25K
15.53 mi12:23:591:54:577:2417:50
7:21
+0:10
30K
18.64 mi12:47:212:18:197:2523:22
7:31
+0:10
20M
20.00 mi12:57:412:28:397:2610:20
7:36
+0:05
21M
21.00 mi13:05:392:36:377:277:58
7:58
+0:22
35K
21.75 mi13:11:052:42:037:275:26
7:16
-0:42
23M
23.00 mi13:20:462:51:447:289:41
7:44
+0:28
24M
24.00 mi13:28:172:59:157:287:31
7:31
-0:13
40K
24.85 mi13:34:533:05:517:296:36
7:43
+0:12
25.2M
25.20 mi13:37:443:08:427:292:51
8:16
+0:33
Finish
26.22 mi13:45:283:16:267:307:44
7:35
-0:41

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

7:11 /mi

Average Pace

7:30 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:37

94% of race

Time at Steady Pace

10:49

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:30 /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 mi10:52:3523:337:3523:33
7:35
#10358
10K
6.21 mi11:15:3946:377:3023:04
7:25
#10051
15K
9.32 mi11:38:271:09:257:2722:48
7:20
#9597
20K
12.43 mi12:01:151:32:137:2522:48
7:20
#9154
Half
13.11 mi12:06:091:37:077:244:54
7:11
#9084
25K
15.53 mi12:23:591:54:577:2417:50
7:21
#8833
30K
18.64 mi12:47:212:18:197:2523:22
7:31
#8521
20M
20.00 mi12:57:412:28:397:2610:20
7:36
#8415
21M
21.00 mi13:05:392:36:377:277:58
7:58
#8328
35K
21.75 mi13:11:052:42:037:275:26
7:16
#8259
23M
23.00 mi13:20:462:51:447:289:41
7:44
#8195
24M
24.00 mi13:28:172:59:157:287:31
7:31
#8158
40K
24.85 mi13:34:533:05:517:296:36
7:43
#8146
25.2M
25.20 mi13:37:443:08:427:292:51
8:16
#8133
Finish
26.22 mi13:45:283:16:267:307:44
7:35
#8145
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10358201520158875(Top 33%)1398(Top 12%)1398(Top 29%)
10K6.21 mi3.10 mi10051+3071860+1551860+1559857(Top 37%)1749(Top 15%)1749(Top 36%)
15K9.32 mi3.11 mi9597+4541657+2031657+2038875(Top 33%)1398(Top 12%)1398(Top 29%)
20K12.43 mi3.11 mi9154+4431495+1621495+1628086(Top 30%)1132(Top 10%)1132(Top 23%)
Half13.11 mi0.68 mi9084+701474+211474+217808(Top 29%)1028(Top 9%)1028(Top 21%)
25K15.53 mi2.42 mi8833+2511387+871387+877676(Top 29%)1080(Top 9%)1080(Top 22%)
30K18.64 mi3.11 mi8521+3121308+791308+797375(Top 28%)1061(Top 9%)1061(Top 22%)
20M20.00 mi1.36 mi8415+1061290+181290+187547(Top 28%)1235(Top 11%)1235(Top 25%)
21M21.00 mi1.00 mi8328+871280+101280+107170(Top 27%)1195(Top 10%)1195(Top 24%)
35K21.75 mi0.75 mi8259+691260+201260+206943(Top 26%)1084(Top 9%)1084(Top 22%)
23M23.00 mi1.25 mi8195+641259+11259+17970(Top 30%)1567(Top 14%)1567(Top 32%)
24M24.00 mi1.00 mi8158+371264-51264-57839(Top 29%)1614(Top 14%)1614(Top 33%)
40K24.85 mi0.85 mi8146+121281-171281-178120(Top 31%)1784(Top 16%)1784(Top 37%)
25.2M25.20 mi0.35 mi8133+131285-41285-48137(Top 31%)1864(Top 16%)1864(Top 38%)
Finish26.22 mi1.02 mi8145-121306-211306-219218(Top 35%)2327(Top 20%)2327(Top 48%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8875

Females

1398

F18-39

1398

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

9857

Females

1749

F18-39

1749

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8875

Females

1398

F18-39

1398

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

8086

Females

1132

F18-39

1132

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

7808

Females

1028

F18-39

1028

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

7676

Females

1080

F18-39

1080

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7375

Females

1061

F18-39

1061

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7547

Females

1235

F18-39

1235

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7170

Females

1195

F18-39

1195

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

6943

Females

1084

F18-39

1084

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

7970

Females

1567

F18-39

1567

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7839

Females

1614

F18-39

1614

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8120

Females

1784

F18-39

1784

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8137

Females

1864

F18-39

1864

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2stories
+22ft-21ft

Overall

9218

Females

2327

F18-39

2327

Passing Analysis

Category:
Athletes Passed
2781*
Passed By
568
Net Change
+2213
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10358
5K → 10K477*170+307#10358#10051
10K → 15K490*36+454#10051#9597
15K → 20K45310+443#9597#9154
20K → Half733+70#9154#9084
Half → 25K2576+251#9084#8833
25K → 30K34129+312#8833#8521
30K → 20M13832+106#8521#8415
20M → 21M11629+87#8415#8328
21M → 35K8718+69#8328#8259
35K → 23M11147+64#8259#8195
23M → 24M7740+37#8195#8158
24M → 40K6654+12#8158#8146
40K → 25.2M4027+13#8146#8133
25.2M → Finish5567-12#8133#8145
TOTALS2781*568+2213

* 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