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BOSTON MARATHON 2023

Natalie Morgenstern

Bib: 13569•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 31%
Gender (Female)
#0 / 11423
Top 12%
Division (F18-39)
#0 / 4884
Top 22%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:03
Rank: #11838
Start → 5K
24:03 | 7:44/mi
10K· 6.21 mi
47:40
Rank: #11537 (+301)
5K → 10K
23:37 | 7:36/mi
15K· 9.32 mi
1:10:49
Rank: #10910 (+627)
10K → 15K
23:09 | 7:27/mi
20K· 12.43 mi
1:34:06
Rank: #10455 (+455)
15K → 20K
23:17 | 7:30/mi
Half· 13.11 mi
1:39:13
Rank: #10442 (+13)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:57:30
Rank: #10176 (+266)
Half → 25K
18:17 | 7:32/mi
30K· 18.64 mi
2:21:04
Rank: #9723 (+453)
25K → 30K
23:34 | 7:35/mi
20M
2:31:16
Rank: #9474 (+249)
30K → 20M
10:12 | 7:30/mi
21M
2:39:04
Rank: #9223 (+251)
20M → 21M
7:48 | 7:48/mi
35K· 21.75 mi
2:44:26
Rank: #9091 (+132)
21M → 35K
5:22 | 7:10/mi
23M
2:53:46
Rank: #8888 (+203)
35K → 23M
9:20 | 7:27/mi
24M
3:01:00
Rank: #8729 (+159)
23M → 24M
7:14 | 7:14/mi
40K· 24.85 mi
3:07:16
Rank: #8587 (+142)
24M → 40K
6:16 | 7:20/mi
25.2M
3:09:54
Rank: #8497 (+90)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
3:17:06
Rank: #8328 (+169)
25.2M → Finish
7:12 | 7:04/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:39:13
Pace7:34 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:37:53
Pace7:28 /mi
📊Negative Split: 1.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:0424:037:4424:03
7:44
-
10K
6.21 mi11:16:4147:407:4023:37
7:36
-0:08
15K
9.32 mi11:39:501:10:497:3623:09
7:27
-0:09
20K
12.43 mi12:03:071:34:067:3423:17
7:30
+0:03
Half
13.11 mi12:08:141:39:137:345:07
7:30
0:00
25K
15.53 mi12:26:311:57:307:3418:17
7:32
+0:02
30K
18.64 mi12:50:052:21:047:3423:34
7:35
+0:03
20M
20.00 mi13:00:172:31:167:3410:12
7:30
-0:05
21M
21.00 mi13:08:052:39:047:347:48
7:48
+0:18
35K
21.75 mi13:13:272:44:267:345:22
7:10
-0:38
23M
23.00 mi13:22:472:53:467:339:20
7:27
+0:17
24M
24.00 mi13:30:013:01:007:337:14
7:14
-0:13
40K
24.85 mi13:36:173:07:167:326:16
7:20
+0:06
25.2M
25.20 mi13:38:553:09:547:322:38
7:38
+0:18
Finish
26.22 mi13:46:073:17:067:317:12
7:04
-0:34

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

7:04 /mi

Average Pace

7:31 /mi

Slowest Pace

7:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:09:18

96% of race

Time at Steady Pace

7:48

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:31 /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 mi10:53:0424:037:4424:03
7:44
#11838
10K
6.21 mi11:16:4147:407:4023:37
7:36
#11537
15K
9.32 mi11:39:501:10:497:3623:09
7:27
#10910
20K
12.43 mi12:03:071:34:067:3423:17
7:30
#10455
Half
13.11 mi12:08:141:39:137:345:07
7:30
#10442
25K
15.53 mi12:26:311:57:307:3418:17
7:32
#10176
30K
18.64 mi12:50:052:21:047:3423:34
7:35
#9723
20M
20.00 mi13:00:172:31:167:3410:12
7:30
#9474
21M
21.00 mi13:08:052:39:047:347:48
7:48
#9223
35K
21.75 mi13:13:272:44:267:345:22
7:10
#9091
23M
23.00 mi13:22:472:53:467:339:20
7:27
#8888
24M
24.00 mi13:30:013:01:007:337:14
7:14
#8729
40K
24.85 mi13:36:173:07:167:326:16
7:20
#8587
25.2M
25.20 mi13:38:553:09:547:322:38
7:38
#8497
Finish
26.22 mi13:46:073:17:067:317:12
7:04
#8328
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi11838276227629782(Top 37%)1741(Top 15%)1741(Top 36%)
10K6.21 mi3.10 mi11537+3012620+1422620+14211349(Top 43%)2517(Top 22%)2517(Top 52%)
15K9.32 mi3.11 mi10910+6272284+3362284+3369782(Top 37%)1741(Top 15%)1741(Top 36%)
20K12.43 mi3.11 mi10455+4552047+2372047+2379278(Top 35%)1590(Top 14%)1590(Top 33%)
Half13.11 mi0.68 mi10442+132046+12046+110251(Top 39%)1984(Top 17%)1984(Top 41%)
25K15.53 mi2.42 mi10176+2661938+1081938+1089091(Top 34%)1584(Top 14%)1584(Top 32%)
30K18.64 mi3.11 mi9723+4531770+1681770+1687855(Top 30%)1248(Top 11%)1248(Top 26%)
20M20.00 mi1.36 mi9474+2491695+751695+756853(Top 26%)978(Top 9%)978(Top 20%)
21M21.00 mi1.00 mi9223+2511622+731622+736206(Top 23%)860(Top 8%)860(Top 18%)
35K21.75 mi0.75 mi9091+1321581+411581+416421(Top 24%)900(Top 8%)900(Top 18%)
23M23.00 mi1.25 mi8888+2031523+581523+586201(Top 23%)887(Top 8%)887(Top 18%)
24M24.00 mi1.00 mi8729+1591479+441479+445983(Top 22%)891(Top 8%)891(Top 18%)
40K24.85 mi0.85 mi8587+1421442+371442+375680(Top 21%)870(Top 8%)870(Top 18%)
25.2M25.20 mi0.35 mi8497+901415+271415+274655(Top 17%)627(Top 5%)627(Top 13%)
Finish26.22 mi1.02 mi8328+1691381+341381+345648(Top 21%)961(Top 8%)961(Top 20%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21stories
+97ft-345ft

Overall

9782

Females

1741

F18-39

1741

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

11349

Females

2517

F18-39

2517

10K→15K

6.2 - 9.3 mi

Top 37%
×3stories
+67ft-78ft

Overall

9782

Females

1741

F18-39

1741

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9278

Females

1590

F18-39

1590

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10251

Females

1984

F18-39

1984

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9091

Females

1584

F18-39

1584

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

7855

Females

1248

F18-39

1248

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

6853

Females

978

F18-39

978

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6206

Females

860

F18-39

860

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6421

Females

900

F18-39

900

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6201

Females

887

F18-39

887

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

5983

Females

891

F18-39

891

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5680

Females

870

F18-39

870

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4655

Females

627

F18-39

627

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5648

Females

961

F18-39

961

Passing Analysis

Category:
Athletes Passed
3823*
Passed By
313
Net Change
+3510
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11838
5K → 10K482181+301#11838#11537
10K → 15K64518+627#11537#10910
15K → 20K47621+455#10910#10455
20K → Half3926+13#10455#10442
Half → 25K29226+266#10442#10176
25K → 30K464*11+453#10176#9723
30K → 20M2534+249#9723#9474
20M → 21M2543+251#9474#9223
21M → 35K1331+132#9223#9091
35K → 23M2063+203#9091#8888
23M → 24M1645+159#8888#8729
24M → 40K1464+142#8729#8587
40K → 25.2M911+90#8587#8497
25.2M → Finish1789+169#8497#8328
TOTALS3823*313+3510

* 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