Boston Marathon logo
BOSTON MARATHON 2023

Jennifer Kennedy

Bib: 14135•F

IL

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 46%
Gender (Female)
#0 / 11423
Top 28%
Masters (Masters Women)
#0 / 6539
Top 15%
Division (F45-49)
#0 / 1817
Top 16%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:53/mi
24:30
↑ 97↓ 3451.5%
10K· 6.21 mi
7:46/mi
48:38
↑ 79↓ 1380.4%
15K· 9.32 mi
7:43/mi
1:12:38
↑ 67↓ 78
20K· 12.43 mi
7:46/mi
1:36:45
↑ 106↓ 860.1%
Half· 13.11 mi
7:42/mi
1:42:00
↑ 19↓ 370.5%
25K· 15.53 mi
7:46/mi
2:00:51
↑ 66↓ 880.2%
30K· 18.64 mi
7:48/mi
2:25:05
↑ 181↓ 1480.2%
20M
9:22/mi
2:37:49
↑ 64↓ 500.2%
21M
8:36/mi
2:46:25
↑ 106↓ 241.6%
35K· 21.75 mi
8:09/mi
2:52:31
↑ 17↓ 861.7%
23M
8:32/mi
3:03:12
↑ 23↓ 630.6%
24M
8:12/mi
3:11:24
↓ 821.3%
40K· 24.85 mi
8:14/mi
3:18:26
↓ 200.3%
25.2M
9:40/mi
3:21:46
↑ 13↓ 160.2%
Finish· 26.22 mi
7:50/mi
3:29:45
↑ 22↓ 21

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
Time1:42:00
Pace7:47 /mi
2nd Half
Distance13.11 mi
Time1:47:45
Pace8:13 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:5624:307:5324:30
7:53
-
10K
6.21 mi11:18:0448:387:5024:08
7:46
-0:07
15K
9.32 mi11:42:041:12:387:4824:00
7:43
-0:03
20K
12.43 mi12:06:111:36:457:4724:07
7:46
+0:03
Half
13.11 mi12:11:261:42:007:475:15
7:42
-0:04
25K
15.53 mi12:30:172:00:517:4718:51
7:46
+0:04
30K
18.64 mi12:54:312:25:057:4724:14
7:48
+0:02
20M
20.00 mi13:07:152:37:497:5312:44
9:22
+1:34
21M
21.00 mi13:15:512:46:257:558:36
8:36
-0:46
35K
21.75 mi13:21:572:52:317:566:06
8:09
-0:27
23M
23.00 mi13:32:383:03:127:5810:41
8:32
+0:23
24M
24.00 mi13:40:503:11:247:598:12
8:12
-0:20
40K
24.85 mi13:47:523:18:267:597:02
8:14
+0:02
25.2M
25.20 mi13:51:123:21:468:003:20
9:40
+1:26
Finish
26.22 mi13:59:113:29:458:007:59
7:50
-1:50

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

7:42 /mi

Average Pace

8:00 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:39:10

76% of race

Time at Slower Pace

50:35

24% of race

Average Pace: 8:00 /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 mi10:53:5624:307:5324:30
7:53
#13131
10K
6.21 mi11:18:0448:387:5024:08
7:46
#12949
15K
9.32 mi11:42:041:12:387:4824:00
7:43
#12619
20K
12.43 mi12:06:111:36:457:4724:07
7:46
#12266
Half
13.11 mi12:11:261:42:007:475:15
7:42
#12243
25K
15.53 mi12:30:172:00:517:4718:51
7:46
#12007
30K
18.64 mi12:54:312:25:057:4724:14
7:48
#11473
20M
20.00 mi13:07:152:37:497:5312:44
9:22
#12140
21M
21.00 mi13:15:512:46:257:558:36
8:36
#12056
35K
21.75 mi13:21:572:52:317:566:06
8:09
#12101
23M
23.00 mi13:32:383:03:127:5810:41
8:32
#12185
24M
24.00 mi13:40:503:11:247:598:12
8:12
#12212
40K
24.85 mi13:47:523:18:267:597:02
8:14
#12156
25.2M
25.20 mi13:51:123:21:468:003:20
9:40
#12238
Finish
26.22 mi13:59:113:29:458:007:59
7:50
#12182
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi131313516351612068(Top 45%)2936(Top 26%)2936(Top 162%)
10K6.21 mi3.10 mi12949+1823417+993417+9912865(Top 48%)3354(Top 29%)3354(Top 185%)
15K9.32 mi3.11 mi12619+3303242+1753242+17512068(Top 45%)2936(Top 26%)2936(Top 162%)
20K12.43 mi3.11 mi12266+3533072+1703072+17011436(Top 43%)2657(Top 23%)2657(Top 146%)
Half13.11 mi0.68 mi12243+233064+83064+811928(Top 45%)2880(Top 25%)2880(Top 159%)
25K15.53 mi2.42 mi12007+2362946+1182946+11810919(Top 41%)2448(Top 21%)2448(Top 135%)
30K18.64 mi3.11 mi11473+5342677+2692677+2699384(Top 35%)1885(Top 17%)1885(Top 104%)
20M20.00 mi1.36 mi12140-6673077-4003077-40018323(Top 69%)6913(Top 61%)6913(Top 380%)
21M21.00 mi1.00 mi12056+843038+393038+3911081(Top 42%)2916(Top 26%)2916(Top 160%)
35K21.75 mi0.75 mi12101-453091-533091-5313161(Top 49%)4082(Top 36%)4082(Top 225%)
23M23.00 mi1.25 mi12185-843159-683159-6813438(Top 50%)4301(Top 38%)4301(Top 237%)
24M24.00 mi1.00 mi12212-273193-343193-3412618(Top 47%)3918(Top 34%)3918(Top 216%)
40K24.85 mi0.85 mi12156+563189+43189+411565(Top 43%)3443(Top 30%)3443(Top 189%)
25.2M25.20 mi0.35 mi12238-823236-473236-4715957(Top 60%)5821(Top 51%)5821(Top 320%)
Finish26.22 mi1.02 mi12182+563226+103226+1010966(Top 41%)3174(Top 28%)3174(Top 175%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

12068

Females

2936

F45-49

2936

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

12865

Females

3354

F45-49

3354

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

12068

Females

2936

F45-49

2936

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

11436

Females

2657

F45-49

2657

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

11928

Females

2880

F45-49

2880

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

10919

Females

2448

F45-49

2448

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9384

Females

1885

F45-49

1885

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18323

Females

6913

F45-49

6913

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11081

Females

2916

F45-49

2916

21M→35K

21.0 - 21.8 mi

Top 49%
×7story building
+17ft-86ft

Overall

13161

Females

4082

F45-49

4082

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

13438

Females

4301

F45-49

4301

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

12618

Females

3918

F45-49

3918

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11565

Females

3443

F45-49

3443

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15957

Females

5821

F45-49

5821

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

10966

Females

3174

F45-49

3174

Passing Analysis

Category:
Athletes Passed
2571
Passed By
1622
Net Change
+949
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13131
5K → 10K415233+182#13131#12949
10K → 15K41585+330#12949#12619
15K → 20K39441+353#12619#12266
20K → Half4017+23#12266#12243
Half → 25K26529+236#12243#12007
25K → 30K5428+534#12007#11473
30K → 20M16683-667#11473#12140
20M → 21M12642+84#12140#12056
21M → 35K3479-45#12056#12101
35K → 23M64148-84#12101#12185
23M → 24M5481-27#12185#12212
24M → 40K8630+56#12212#12156
40K → 25.2M1294-82#12156#12238
25.2M → Finish10852+56#12238#12182
TOTALS25711622+949
📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing