Boston Marathon logo
BOSTON MARATHON 2023

Jennifer Negley

Bib: 16879•F

AL

0:00
0:00
/ mi
Be the first to cheer!
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
24:38
Rank: #13518
Start → 5K
24:38 | 7:56/mi
10K· 6.21 mi
49:32
Rank: #14188 (-670)
5K → 10K
24:54 | 8:01/mi
15K· 9.32 mi
1:15:12
Rank: #14892 (-704)
10K → 15K
25:40 | 8:16/mi
20K· 12.43 mi
1:42:10
Rank: #15722 (-830)
15K → 20K
26:58 | 8:41/mi
Half· 13.11 mi
1:48:07
Rank: #15901 (-179)
20K → Half
5:57 | 8:43/mi
25K· 15.53 mi
2:10:14
Rank: #16638 (-737)
Half → 25K
22:07 | 9:07/mi
30K· 18.64 mi
2:41:38
Rank: #17782 (-1144)
25K → 30K
31:24 | 10:06/mi
20M
2:55:42
Rank: #18248 (-466)
30K → 20M
14:04 | 10:21/mi
21M
3:06:50
Rank: #18537 (-289)
20M → 21M
11:08 | 11:08/mi
35K· 21.75 mi
3:14:28
Rank: #18699 (-162)
21M → 35K
7:38 | 10:12/mi
23M
3:27:50
Rank: #19016 (-317)
35K → 23M
13:22 | 10:41/mi
24M
3:38:30
Rank: #19261 (-245)
23M → 24M
10:40 | 10:40/mi
40K· 24.85 mi
3:48:26
Rank: #19535 (-274)
24M → 40K
9:56 | 11:37/mi
25.2M
3:52:51
Rank: #19670 (-135)
40K → 25.2M
4:25 | 12:48/mi
Finish· 26.22 mi
4:03:50
Rank: #19880 (-210)
25.2M → Finish
10:59 | 10:47/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:07
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time2:15:43
Pace10:21 /mi
📊Positive Split: 25.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5124:387:5624:38
7:56
-
10K
6.21 mi11:39:4549:327:5824:54
8:01
+0:05
15K
9.32 mi12:05:251:15:128:0425:40
8:16
+0:15
20K
12.43 mi12:32:231:42:108:1326:58
8:41
+0:25
Half
13.11 mi12:38:201:48:078:155:57
8:43
+0:02
25K
15.53 mi13:00:272:10:148:2322:07
9:07
+0:24
30K
18.64 mi13:31:512:41:388:4031:24
10:06
+0:59
20M
20.00 mi13:45:552:55:428:4714:04
10:21
+0:15
21M
21.00 mi13:57:033:06:508:5411:08
11:08
+0:47
35K
21.75 mi14:04:413:14:288:577:38
10:12
-0:56
23M
23.00 mi14:18:033:27:509:0213:22
10:41
+0:29
24M
24.00 mi14:28:433:38:309:0610:40
10:40
-0:01
40K
24.85 mi14:38:393:48:269:119:56
11:37
+0:57
25.2M
25.20 mi14:43:043:52:519:144:25
12:48
+1:11
Finish
26.22 mi14:54:034:03:509:1810:59
10:47
-2:01

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

9:18 /mi

Slowest Pace

12:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:14

53% of race

Time at Steady Pace

1:28:07

36% of race

Time at Slower Pace

25:29

10% of race

Average Pace: 9:18 /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 mi11:14:5124:387:5624:38
7:56
#13518
10K
6.21 mi11:39:4549:327:5824:54
8:01
#14188
15K
9.32 mi12:05:251:15:128:0425:40
8:16
#14892
20K
12.43 mi12:32:231:42:108:1326:58
8:41
#15722
Half
13.11 mi12:38:201:48:078:155:57
8:43
#15901
25K
15.53 mi13:00:272:10:148:2322:07
9:07
#16638
30K
18.64 mi13:31:512:41:388:4031:24
10:06
#17782
20M
20.00 mi13:45:552:55:428:4714:04
10:21
#18248
21M
21.00 mi13:57:033:06:508:5411:08
11:08
#18537
35K
21.75 mi14:04:413:14:288:577:38
10:12
#18699
23M
23.00 mi14:18:033:27:509:0213:22
10:41
#19016
24M
24.00 mi14:28:433:38:309:0610:40
10:40
#19261
40K
24.85 mi14:38:393:48:269:119:56
11:37
#19535
25.2M
25.20 mi14:43:043:52:519:144:25
12:48
#19670
Finish
26.22 mi14:54:034:03:509:1810:59
10:47
#19880
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi135183734373416310(Top 61%)5485(Top 48%)5485(Top 112%)
10K6.21 mi3.10 mi14188-6704158-4244158-42414934(Top 56%)4635(Top 41%)4635(Top 95%)
15K9.32 mi3.11 mi14892-7044596-4384596-43816310(Top 61%)5485(Top 48%)5485(Top 112%)
20K12.43 mi3.11 mi15722-8305130-5345130-53418013(Top 68%)6519(Top 57%)6519(Top 133%)
Half13.11 mi0.68 mi15901-1795245-1155245-11519130(Top 72%)7172(Top 63%)7172(Top 147%)
25K15.53 mi2.42 mi16638-7375720-4755720-47519527(Top 73%)7441(Top 65%)7441(Top 152%)
30K18.64 mi3.11 mi17782-11446426-7066426-70621299(Top 80%)8515(Top 75%)8515(Top 174%)
20M20.00 mi1.36 mi18248-4666729-3036729-30321404(Top 80%)8640(Top 76%)8640(Top 177%)
21M21.00 mi1.00 mi18537-2896899-1706899-17021108(Top 79%)8515(Top 75%)8515(Top 174%)
35K21.75 mi0.75 mi18699-1626998-996998-9921791(Top 82%)8925(Top 78%)8925(Top 183%)
23M23.00 mi1.25 mi19016-3177193-1957193-19521706(Top 82%)8908(Top 78%)8908(Top 182%)
24M24.00 mi1.00 mi19261-2457342-1497342-14922382(Top 84%)9301(Top 81%)9301(Top 190%)
40K24.85 mi0.85 mi19535-2747510-1687510-16823387(Top 88%)9869(Top 86%)9869(Top 202%)
25.2M25.20 mi0.35 mi19670-1357595-857595-8523725(Top 89%)10040(Top 88%)10040(Top 206%)
Finish26.22 mi1.02 mi19880-2107723-1287723-12823576(Top 89%)9942(Top 87%)9942(Top 204%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

16310

Females

5485

F18-39

5485

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

14934

Females

4635

F18-39

4635

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

16310

Females

5485

F18-39

5485

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

18013

Females

6519

F18-39

6519

20K→Half

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

19130

Females

7172

F18-39

7172

Half→25K

13.1 - 15.5 mi

Top 73%
×4stories
+66ft-88ft

Overall

19527

Females

7441

F18-39

7441

25K→30K

15.5 - 18.6 mi

Top 80%
×9stories
+181ft-148ft

Overall

21299

Females

8515

F18-39

8515

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

21404

Females

8640

F18-39

8640

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

21108

Females

8515

F18-39

8515

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

21791

Females

8925

F18-39

8925

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

21706

Females

8908

F18-39

8908

23M→24M

23.0 - 24.0 mi

Top 84%
×6stories
+12ft-82ft

Overall

22382

Females

9301

F18-39

9301

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

23387

Females

9869

F18-39

9869

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1story
+13ft-16ft

Overall

23725

Females

10040

F18-39

10040

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2stories
+22ft-21ft

Overall

23576

Females

9942

F18-39

9942

Passing Analysis

Category:
Athletes Passed
332
Passed By
6694
Net Change
-6362
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13518
5K → 10K86756-670#13518#14188
10K → 15K43747-704#14188#14892
15K → 20K38868-830#14892#15722
20K → Half5184-179#15722#15901
Half → 25K25762-737#15901#16638
25K → 30K251169-1144#16638#17782
30K → 20M18484-466#17782#18248
20M → 21M25314-289#18248#18537
21M → 35K15177-162#18537#18699
35K → 23M12329-317#18699#19016
23M → 24M21266-245#19016#19261
24M → 40K10284-274#19261#19535
40K → 25.2M3138-135#19535#19670
25.2M → Finish6216-210#19670#19880
TOTALS3326694-6362
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing