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BOSTON MARATHON 2023

Jennifer Nasab

Bib: 11613•F

CA

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
27:12
Rank: #19222
Start → 5K
27:12 | 8:45/mi
10K· 6.21 mi
54:57
Rank: #19911 (-689)
5K → 10K
27:45 | 8:56/mi
15K· 9.32 mi
1:21:56
Rank: #19564 (+347)
10K → 15K
26:59 | 8:41/mi
20K· 12.43 mi
1:49:51
Rank: #19535 (+29)
15K → 20K
27:55 | 8:59/mi
Half· 13.11 mi
1:55:48
Rank: #19517 (+18)
20K → Half
5:57 | 8:43/mi
25K· 15.53 mi
2:17:19
Rank: #19305 (+212)
Half → 25K
21:31 | 8:52/mi
30K· 18.64 mi
2:44:57
Rank: #18838 (+467)
25K → 30K
27:38 | 8:54/mi
20M
2:56:42
Rank: #18532 (+306)
30K → 20M
11:45 | 8:39/mi
21M
3:05:56
Rank: #18308 (+224)
20M → 21M
9:14 | 9:14/mi
35K· 21.75 mi
3:12:02
Rank: #18112 (+196)
21M → 35K
6:06 | 8:09/mi
23M
3:22:45
Rank: #17872 (+240)
35K → 23M
10:43 | 8:34/mi
24M
3:31:01
Rank: #17667 (+205)
23M → 24M
8:16 | 8:16/mi
40K· 24.85 mi
3:38:15
Rank: #17496 (+171)
24M → 40K
7:14 | 8:28/mi
25.2M
3:41:23
Rank: #17423 (+73)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:49:28
Rank: #17230 (+193)
25.2M → Finish
8:05 | 7:56/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:55:48
Pace8:50 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:53:40
Pace8:40 /mi
📊Negative Split: 1.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:4627:128:4527:12
8:45
-
10K
6.21 mi11:21:3154:578:5127:45
8:56
+0:11
15K
9.32 mi11:48:301:21:568:4726:59
8:41
-0:15
20K
12.43 mi12:16:251:49:518:5027:55
8:59
+0:18
Half
13.11 mi12:22:221:55:488:505:57
8:43
-0:16
25K
15.53 mi12:43:532:17:198:5021:31
8:52
+0:09
30K
18.64 mi13:11:312:44:578:5127:38
8:54
+0:02
20M
20.00 mi13:23:162:56:428:5011:45
8:39
-0:15
21M
21.00 mi13:32:303:05:568:519:14
9:14
+0:35
35K
21.75 mi13:38:363:12:028:506:06
8:09
-1:05
23M
23.00 mi13:49:193:22:458:4910:43
8:34
+0:25
24M
24.00 mi13:57:353:31:018:488:16
8:16
-0:18
40K
24.85 mi14:04:493:38:158:477:14
8:28
+0:12
25.2M
25.20 mi14:07:573:41:238:473:08
9:05
+0:37
Finish
26.22 mi14:16:023:49:288:458:05
7:56
-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

7:56 /mi

Average Pace

8:45 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:25:05

37% of race

Time at Steady Pace

2:24:23

63% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:45 /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 mi10:53:4627:128:4527:12
8:45
#19222
10K
6.21 mi11:21:3154:578:5127:45
8:56
#19911
15K
9.32 mi11:48:301:21:568:4726:59
8:41
#19564
20K
12.43 mi12:16:251:49:518:5027:55
8:59
#19535
Half
13.11 mi12:22:221:55:488:505:57
8:43
#19517
25K
15.53 mi12:43:532:17:198:5021:31
8:52
#19305
30K
18.64 mi13:11:312:44:578:5127:38
8:54
#18838
20M
20.00 mi13:23:162:56:428:5011:45
8:39
#18532
21M
21.00 mi13:32:303:05:568:519:14
9:14
#18308
35K
21.75 mi13:38:363:12:028:506:06
8:09
#18112
23M
23.00 mi13:49:193:22:458:4910:43
8:34
#17872
24M
24.00 mi13:57:353:31:018:488:16
8:16
#17667
40K
24.85 mi14:04:493:38:158:477:14
8:28
#17496
25.2M
25.20 mi14:07:573:41:238:473:08
9:05
#17423
Finish
26.22 mi14:16:023:49:288:458:05
7:56
#17230
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi192227347734718913(Top 71%)7053(Top 62%)7053(Top 144%)
10K6.21 mi3.10 mi19911-6897718-3717718-37120611(Top 77%)8049(Top 70%)8049(Top 165%)
15K9.32 mi3.11 mi19564+3477488+2307488+23018913(Top 71%)7053(Top 62%)7053(Top 144%)
20K12.43 mi3.11 mi19535+297448+407448+4019640(Top 74%)7465(Top 65%)7465(Top 153%)
Half13.11 mi0.68 mi19517+187439+97439+919139(Top 72%)7181(Top 63%)7181(Top 147%)
25K15.53 mi2.42 mi19305+2127309+1307309+13018348(Top 69%)6756(Top 59%)6756(Top 138%)
30K18.64 mi3.11 mi18838+4677050+2597050+25916634(Top 62%)5859(Top 51%)5859(Top 120%)
20M20.00 mi1.36 mi18532+3066887+1636887+16314592(Top 55%)4769(Top 42%)4769(Top 98%)
21M21.00 mi1.00 mi18308+2246779+1086779+10814683(Top 55%)4876(Top 43%)4876(Top 100%)
35K21.75 mi0.75 mi18112+1966666+1136666+11313220(Top 50%)4139(Top 36%)4139(Top 85%)
23M23.00 mi1.25 mi17872+2406541+1256541+12513627(Top 51%)4422(Top 39%)4422(Top 91%)
24M24.00 mi1.00 mi17667+2056435+1066435+10613117(Top 49%)4205(Top 37%)4205(Top 86%)
40K24.85 mi0.85 mi17496+1716343+926343+9213142(Top 49%)4298(Top 38%)4298(Top 88%)
25.2M25.20 mi0.35 mi17423+736306+376306+3713146(Top 49%)4341(Top 38%)4341(Top 89%)
Finish26.22 mi1.02 mi17230+1936201+1056201+10511683(Top 44%)3553(Top 31%)3553(Top 73%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21stories
+97ft-345ft

Overall

18913

Females

7053

F18-39

7053

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

20611

Females

8049

F18-39

8049

10K→15K

6.2 - 9.3 mi

Top 71%
×3stories
+67ft-78ft

Overall

18913

Females

7053

F18-39

7053

15K→20K

9.3 - 12.4 mi

Top 74%
×5stories
+106ft-86ft

Overall

19640

Females

7465

F18-39

7465

20K→Half

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

19139

Females

7181

F18-39

7181

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

18348

Females

6756

F18-39

6756

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

16634

Females

5859

F18-39

5859

30K→20M

18.6 - 20.0 mi

Top 55%
×5stories
+64ft-50ft

Overall

14592

Females

4769

F18-39

4769

20M→21M

20.0 - 21.0 mi

Top 55%
×8stories
+106ft-24ft

Overall

14683

Females

4876

F18-39

4876

21M→35K

21.0 - 21.8 mi

Top 50%
×7stories
+17ft-86ft

Overall

13220

Females

4139

F18-39

4139

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

13627

Females

4422

F18-39

4422

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

13117

Females

4205

F18-39

4205

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13142

Females

4298

F18-39

4298

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13146

Females

4341

F18-39

4341

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

11683

Females

3553

F18-39

3553

Passing Analysis

Category:
Athletes Passed
3096
Passed By
1104
Net Change
+1992
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19222
5K → 10K107796-689#19222#19911
10K → 15K41164+347#19911#19564
15K → 20K174145+29#19564#19535
20K → Half3719+18#19535#19517
Half → 25K24735+212#19517#19305
25K → 30K48114+467#19305#18838
30K → 20M3093+306#18838#18532
20M → 21M2306+224#18532#18308
21M → 35K1971+196#18308#18112
35K → 23M2433+240#18112#17872
23M → 24M2061+205#17872#17667
24M → 40K1798+171#17667#17496
40K → 25.2M752+73#17496#17423
25.2M → Finish2007+193#17423#17230
TOTALS30961104+1992
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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