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BOSTON MARATHON 2023

Jessica Nelson

Bib: 18834•F

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0:00
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 50%
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
26:47
Rank: #18350
Start → 5K
26:47 | 8:37/mi
10K· 6.21 mi
53:16
Rank: #18347 (+3)
5K → 10K
26:29 | 8:31/mi
15K· 9.32 mi
1:19:47
Rank: #18229 (+118)
10K → 15K
26:31 | 8:32/mi
20K· 12.43 mi
1:46:41
Rank: #18114 (+115)
15K → 20K
26:54 | 8:39/mi
Half· 13.11 mi
1:52:36
Rank: #18137 (-23)
20K → Half
5:55 | 8:40/mi
25K· 15.53 mi
2:13:38
Rank: #17970 (+167)
Half → 25K
21:02 | 8:41/mi
30K· 18.64 mi
2:41:13
Rank: #17650 (+320)
25K → 30K
27:35 | 8:53/mi
20M
2:53:11
Rank: #17483 (+167)
30K → 20M
11:58 | 8:48/mi
21M
3:02:17
Rank: #17270 (+213)
20M → 21M
9:06 | 9:06/mi
35K· 21.75 mi
3:08:45
Rank: #17221 (+49)
21M → 35K
6:28 | 8:39/mi
23M
3:19:27
Rank: #16996 (+225)
35K → 23M
10:42 | 8:33/mi
24M
3:27:56
Rank: #16896 (+100)
23M → 24M
8:29 | 8:29/mi
40K· 24.85 mi
3:35:12
Rank: #16755 (+141)
24M → 40K
7:16 | 8:30/mi
25.2M
3:38:09
Rank: #16643 (+112)
40K → 25.2M
2:57 | 8:33/mi
Finish· 26.22 mi
3:46:03
Rank: #16386 (+257)
25.2M → Finish
7:54 | 7:45/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:52:36
Pace8:35 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:53:27
Pace8:39 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0526:478:3726:47
8:37
-
10K
6.21 mi11:44:3453:168:3426:29
8:31
-0:06
15K
9.32 mi12:11:051:19:478:3426:31
8:32
+0:01
20K
12.43 mi12:37:591:46:418:3526:54
8:39
+0:07
Half
13.11 mi12:43:541:52:368:355:55
8:40
+0:01
25K
15.53 mi13:04:562:13:388:3621:02
8:41
+0:01
30K
18.64 mi13:32:312:41:138:3927:35
8:53
+0:12
20M
20.00 mi13:44:292:53:118:4011:58
8:48
-0:05
21M
21.00 mi13:53:353:02:178:419:06
9:06
+0:18
35K
21.75 mi14:00:033:08:458:416:28
8:39
-0:27
23M
23.00 mi14:10:453:19:278:4010:42
8:33
-0:06
24M
24.00 mi14:19:143:27:568:408:29
8:29
-0:04
40K
24.85 mi14:26:303:35:128:397:16
8:30
+0:01
25.2M
25.20 mi14:29:273:38:098:392:57
8:33
+0:03
Finish
26.22 mi14:37:213:46:038:387:54
7:45
-0:48

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

7:45 /mi

Average Pace

8:38 /mi

Slowest Pace

9:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

50:08

22% of race

Time at Steady Pace

2:55:55

78% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:37 /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 mi11:18:0526:478:3726:47
8:37
#18350
10K
6.21 mi11:44:3453:168:3426:29
8:31
#18347
15K
9.32 mi12:11:051:19:478:3426:31
8:32
#18229
20K
12.43 mi12:37:591:46:418:3526:54
8:39
#18114
Half
13.11 mi12:43:541:52:368:355:55
8:40
#18137
25K
15.53 mi13:04:562:13:388:3621:02
8:41
#17970
30K
18.64 mi13:32:312:41:138:3927:35
8:53
#17650
20M
20.00 mi13:44:292:53:118:4011:58
8:48
#17483
21M
21.00 mi13:53:353:02:178:419:06
9:06
#17270
35K
21.75 mi14:00:033:08:458:416:28
8:39
#17221
23M
23.00 mi14:10:453:19:278:4010:42
8:33
#16996
24M
24.00 mi14:19:143:27:568:408:29
8:29
#16896
40K
24.85 mi14:26:303:35:128:397:16
8:30
#16755
25.2M
25.20 mi14:29:273:38:098:392:57
8:33
#16643
Finish
26.22 mi14:37:213:46:038:387:54
7:45
#16386
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi183506777677718044(Top 68%)6524(Top 57%)6524(Top 134%)
10K6.21 mi3.10 mi18347+36724+536724+5318401(Top 69%)6713(Top 59%)6713(Top 137%)
15K9.32 mi3.11 mi18229+1186655+696655+6918044(Top 68%)6524(Top 57%)6524(Top 134%)
20K12.43 mi3.11 mi18114+1156577+786577+7817862(Top 67%)6427(Top 56%)6427(Top 132%)
Half13.11 mi0.68 mi18137-236590-136590-1318773(Top 71%)6930(Top 61%)6930(Top 142%)
25K15.53 mi2.42 mi17970+1676519+716519+7117250(Top 65%)6141(Top 54%)6141(Top 126%)
30K18.64 mi3.11 mi17650+3206346+1736346+17316541(Top 62%)5812(Top 51%)5812(Top 119%)
20M20.00 mi1.36 mi17483+1676268+786268+7815485(Top 58%)5271(Top 46%)5271(Top 108%)
21M21.00 mi1.00 mi17270+2136155+1136155+11314021(Top 53%)4504(Top 39%)4504(Top 92%)
35K21.75 mi0.75 mi17221+496137+186137+1816126(Top 61%)5765(Top 50%)5765(Top 118%)
23M23.00 mi1.25 mi16996+2256021+1166021+11613539(Top 51%)4370(Top 38%)4370(Top 89%)
24M24.00 mi1.00 mi16896+1005978+435978+4314418(Top 54%)4912(Top 43%)4912(Top 101%)
40K24.85 mi0.85 mi16755+1415912+665912+6613390(Top 50%)4426(Top 39%)4426(Top 91%)
25.2M25.20 mi0.35 mi16643+1125858+545858+5410027(Top 38%)2743(Top 24%)2743(Top 56%)
Finish26.22 mi1.02 mi16386+2575708+1505708+15010376(Top 39%)2893(Top 25%)2893(Top 59%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

18044

Females

6524

F18-39

6524

5K→10K

3.1 - 6.2 mi

Top 69%
×5stories
+79ft-138ft

Overall

18401

Females

6713

F18-39

6713

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

18044

Females

6524

F18-39

6524

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

17862

Females

6427

F18-39

6427

20K→Half

12.4 - 13.1 mi

Top 71%
×2stories
+19ft-37ft

Overall

18773

Females

6930

F18-39

6930

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

17250

Females

6141

F18-39

6141

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

16541

Females

5812

F18-39

5812

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

15485

Females

5271

F18-39

5271

20M→21M

20.0 - 21.0 mi

Top 53%
×8stories
+106ft-24ft

Overall

14021

Females

4504

F18-39

4504

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

16126

Females

5765

F18-39

5765

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

13539

Females

4370

F18-39

4370

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

14418

Females

4912

F18-39

4912

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13390

Females

4426

F18-39

4426

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10027

Females

2743

F18-39

2743

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

10376

Females

2893

F18-39

2893

Passing Analysis

Category:
Athletes Passed
2725
Passed By
761
Net Change
+1964
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18350
5K → 10K321318+3#18350#18347
10K → 15K241123+118#18347#18229
15K → 20K221106+115#18229#18114
20K → Half1639-23#18114#18137
Half → 25K22154+167#18137#17970
25K → 30K36141+320#17970#17650
30K → 20M18518+167#17650#17483
20M → 21M22411+213#17483#17270
21M → 35K6718+49#17270#17221
35K → 23M23712+225#17221#16996
23M → 24M11515+100#16996#16896
24M → 40K1454+141#16896#16755
40K → 25.2M1120+112#16755#16643
25.2M → Finish2592+257#16643#16386
TOTALS2725761+1964
📊

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