Boston Marathon logo
BOSTON MARATHON 2023

Jacqueline Klayman

Bib: 7549•F

TX

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:20
Rank: #21923
Start → 5K
29:20 | 9:26/mi
10K· 6.21 mi
1:00:44
Rank: #23109 (-1186)
5K → 10K
31:24 | 10:06/mi
15K· 9.32 mi
1:32:35
Rank: #23454 (-345)
10K → 15K
31:51 | 10:15/mi
20K· 12.43 mi
2:05:15
Rank: #23593 (-139)
15K → 20K
32:40 | 10:31/mi
Half· 13.11 mi
2:12:15
Rank: #23611 (-18)
20K → Half
7:00 | 10:16/mi
25K· 15.53 mi
2:38:11
Rank: #23573 (+38)
Half → 25K
25:56 | 10:42/mi
30K· 18.64 mi
3:10:43
Rank: #23299 (+274)
25K → 30K
32:32 | 10:28/mi
20M
3:24:47
Rank: #23161 (+138)
30K → 20M
14:04 | 10:21/mi
21M
3:35:19
Rank: #22991 (+170)
20M → 21M
10:32 | 10:32/mi
35K· 21.75 mi
3:42:36
Rank: #22908 (+83)
21M → 35K
7:17 | 9:44/mi
23M
3:55:13
Rank: #22766 (+142)
35K → 23M
12:37 | 10:05/mi
24M
4:04:50
Rank: #22637 (+129)
23M → 24M
9:37 | 9:37/mi
40K· 24.85 mi
4:13:13
Rank: #22545 (+92)
24M → 40K
8:23 | 9:48/mi
25.2M
4:16:50
Rank: #22499 (+46)
40K → 25.2M
3:37 | 10:29/mi
Finish· 26.22 mi
4:26:37
Rank: #22439 (+60)
25.2M → Finish
9:47 | 9:36/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
Time2:12:15
Pace10:05 /mi
2nd Half
Distance13.11 mi
Time2:14:22
Pace10:15 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:35:3329:209:2629:20
9:26
-
10K
6.21 mi11:06:571:00:449:4631:24
10:06
+0:40
15K
9.32 mi11:38:481:32:359:5631:51
10:15
+0:09
20K
12.43 mi12:11:282:05:1510:0532:40
10:31
+0:16
Half
13.11 mi12:18:282:12:1510:057:00
10:16
-0:15
25K
15.53 mi12:44:242:38:1110:1125:56
10:42
+0:26
30K
18.64 mi13:16:563:10:4310:1432:32
10:28
-0:14
20M
20.00 mi13:31:003:24:4710:1414:04
10:21
-0:07
21M
21.00 mi13:41:323:35:1910:1510:32
10:32
+0:11
35K
21.75 mi13:48:493:42:3610:147:17
9:44
-0:48
23M
23.00 mi14:01:263:55:1310:1412:37
10:05
+0:21
24M
24.00 mi14:11:034:04:5010:129:37
9:37
-0:28
40K
24.85 mi14:19:264:13:1310:118:23
9:48
+0:11
25.2M
25.20 mi14:23:034:16:5010:123:37
10:29
+0:41
Finish
26.22 mi14:32:504:26:3710:119:47
9:36
-0:53

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

9:26 /mi

Average Pace

10:11 /mi

Slowest Pace

10:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:41:20

61% of race

Time at Steady Pace

1:45:17

39% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:10 /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 mi10:35:3329:209:2629:20
9:26
#21923
10K
6.21 mi11:06:571:00:449:4631:24
10:06
#23109
15K
9.32 mi11:38:481:32:359:5631:51
10:15
#23454
20K
12.43 mi12:11:282:05:1510:0532:40
10:31
#23593
Half
13.11 mi12:18:282:12:1510:057:00
10:16
#23611
25K
15.53 mi12:44:242:38:1110:1125:56
10:42
#23573
30K
18.64 mi13:16:563:10:4310:1432:32
10:28
#23299
20M
20.00 mi13:31:003:24:4710:1414:04
10:21
#23161
21M
21.00 mi13:41:323:35:1910:1510:32
10:32
#22991
35K
21.75 mi13:48:493:42:3610:147:17
9:44
#22908
23M
23.00 mi14:01:263:55:1310:1412:37
10:05
#22766
24M
24.00 mi14:11:034:04:5010:129:37
9:37
#22637
40K
24.85 mi14:19:264:13:1310:118:23
9:48
#22545
25.2M
25.20 mi14:23:034:16:5010:123:37
10:29
#22499
Finish
26.22 mi14:32:504:26:3710:119:47
9:36
#22439
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi219238845884523990(Top 90%)9884(Top 87%)9884(Top 526%)
10K6.21 mi3.10 mi23109-11869427-5829427-58223919(Top 90%)9842(Top 86%)9842(Top 524%)
15K9.32 mi3.11 mi23454-3459587-1609587-16023990(Top 90%)9884(Top 87%)9884(Top 526%)
20K12.43 mi3.11 mi23593-1399658-719658-7123861(Top 90%)9826(Top 86%)9826(Top 523%)
Half13.11 mi0.68 mi23611-189671-139671-1323778(Top 89%)9785(Top 86%)9785(Top 521%)
25K15.53 mi2.42 mi23573+389659+129659+1223508(Top 88%)9675(Top 85%)9675(Top 515%)
30K18.64 mi3.11 mi23299+2749539+1209539+12022151(Top 83%)8980(Top 79%)8980(Top 478%)
20M20.00 mi1.36 mi23161+1389477+629477+6221414(Top 80%)8650(Top 76%)8650(Top 461%)
21M21.00 mi1.00 mi22991+1709401+769401+7619717(Top 74%)7782(Top 68%)7782(Top 414%)
35K21.75 mi0.75 mi22908+839368+339368+3320596(Top 77%)8277(Top 72%)8277(Top 441%)
23M23.00 mi1.25 mi22766+1429303+659303+6520229(Top 76%)8099(Top 71%)8099(Top 431%)
24M24.00 mi1.00 mi22637+1299241+629241+6219661(Top 74%)7796(Top 68%)7796(Top 415%)
40K24.85 mi0.85 mi22545+929194+479194+4719431(Top 73%)7738(Top 68%)7738(Top 412%)
25.2M25.20 mi0.35 mi22499+469173+219173+2119136(Top 72%)7597(Top 67%)7597(Top 405%)
Finish26.22 mi1.02 mi22439+609149+249149+2420499(Top 77%)8296(Top 73%)8296(Top 442%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21stories
+97ft-345ft

Overall

23990

Females

9884

F40-44

9884

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

23919

Females

9842

F40-44

9842

10K→15K

6.2 - 9.3 mi

Top 90%
×3stories
+67ft-78ft

Overall

23990

Females

9884

F40-44

9884

15K→20K

9.3 - 12.4 mi

Top 90%
×5stories
+106ft-86ft

Overall

23861

Females

9826

F40-44

9826

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

23778

Females

9785

F40-44

9785

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

23508

Females

9675

F40-44

9675

25K→30K

15.5 - 18.6 mi

Top 83%
×9stories
+181ft-148ft

Overall

22151

Females

8980

F40-44

8980

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

21414

Females

8650

F40-44

8650

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

19717

Females

7782

F40-44

7782

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

20596

Females

8277

F40-44

8277

35K→23M

21.8 - 23.0 mi

Top 76%
×5stories
+23ft-63ft

Overall

20229

Females

8099

F40-44

8099

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19661

Females

7796

F40-44

7796

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

19431

Females

7738

F40-44

7738

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19136

Females

7597

F40-44

7597

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2stories
+22ft-21ft

Overall

20499

Females

8296

F40-44

8296

Passing Analysis

Category:
Athletes Passed
1432
Passed By
1948
Net Change
-516
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21923
5K → 10K141200-1186#21923#23109
10K → 15K44389-345#23109#23454
15K → 20K80219-139#23454#23593
20K → Half1836-18#23593#23611
Half → 25K11173+38#23611#23573
25K → 30K2795+274#23573#23299
30K → 20M1446+138#23299#23161
20M → 21M1700+170#23161#22991
21M → 35K852+83#22991#22908
35K → 23M1453+142#22908#22766
23M → 24M1301+129#22766#22637
24M → 40K920+92#22637#22545
40K → 25.2M471+46#22545#22499
25.2M → Finish7313+60#22499#22439
TOTALS14321948-516
📊

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