Boston Marathon logo
BOSTON MARATHON 2023

Jennifer Pearce

Bib: 12942•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 48%
Gender (Female)
#0 / 11423
Top 32%
Masters (Masters Women)
#0 / 6539
Top 18%
Division (F40-44)
#0 / 1878
Top 34%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:00
Rank: #11696
Start → 5K
24:00 | 7:43/mi
10K· 6.21 mi
47:40
Rank: #11546 (+150)
5K → 10K
23:40 | 7:37/mi
15K· 9.32 mi
1:11:34
Rank: #11600 (-54)
10K → 15K
23:54 | 7:42/mi
20K· 12.43 mi
1:36:01
Rank: #11757 (-157)
15K → 20K
24:27 | 7:52/mi
Half· 13.11 mi
1:41:25
Rank: #11862 (-105)
20K → Half
5:24 | 7:55/mi
25K· 15.53 mi
2:01:07
Rank: #12157 (-295)
Half → 25K
19:42 | 8:08/mi
30K· 18.64 mi
2:27:27
Rank: #12557 (-400)
25K → 30K
26:20 | 8:29/mi
20M
2:38:47
Rank: #12548 (+9)
30K → 20M
11:20 | 8:20/mi
21M
2:48:17
Rank: #12756 (-208)
20M → 21M
9:30 | 9:30/mi
35K· 21.75 mi
2:54:20
Rank: #12751 (+5)
21M → 35K
6:03 | 8:05/mi
23M
3:05:09
Rank: #12846 (-95)
35K → 23M
10:49 | 8:38/mi
24M
3:13:26
Rank: #12843 (+3)
23M → 24M
8:17 | 8:17/mi
40K· 24.85 mi
3:20:40
Rank: #12837 (+6)
24M → 40K
7:14 | 8:28/mi
25.2M
3:23:50
Rank: #12848 (-11)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:32:09
Rank: #12842 (+6)
25.2M → Finish
8:19 | 8:10/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
Time1:41:25
Pace7:44 /mi
2nd Half
Distance13.11 mi
Time1:50:44
Pace8:27 /mi
📊Positive Split: 9.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3824:007:4324:00
7:43
-
10K
6.21 mi11:15:1847:407:4023:40
7:37
-0:06
15K
9.32 mi11:39:121:11:347:4123:54
7:42
+0:05
20K
12.43 mi12:03:391:36:017:4424:27
7:52
+0:10
Half
13.11 mi12:09:031:41:257:445:24
7:55
+0:03
25K
15.53 mi12:28:452:01:077:4819:42
8:08
+0:13
30K
18.64 mi12:55:052:27:277:5526:20
8:29
+0:21
20M
20.00 mi13:06:252:38:477:5611:20
8:20
-0:09
21M
21.00 mi13:15:552:48:178:019:30
9:30
+1:10
35K
21.75 mi13:21:582:54:208:016:03
8:05
-1:25
23M
23.00 mi13:32:473:05:098:0310:49
8:38
+0:33
24M
24.00 mi13:41:043:13:268:048:17
8:17
-0:21
40K
24.85 mi13:48:183:20:408:047:14
8:28
+0:11
25.2M
25.20 mi13:51:283:23:508:053:10
9:11
+0:43
Finish
26.22 mi13:59:473:32:098:068:19
8:10
-1:01

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

7:37 /mi

Average Pace

8:06 /mi

Slowest Pace

9:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:01

45% of race

Time at Steady Pace

59:05

28% of race

Time at Slower Pace

57:03

27% of race

Average Pace: 8:05 /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 mi10:51:3824:007:4324:00
7:43
#11696
10K
6.21 mi11:15:1847:407:4023:40
7:37
#11546
15K
9.32 mi11:39:121:11:347:4123:54
7:42
#11600
20K
12.43 mi12:03:391:36:017:4424:27
7:52
#11757
Half
13.11 mi12:09:031:41:257:445:24
7:55
#11862
25K
15.53 mi12:28:452:01:077:4819:42
8:08
#12157
30K
18.64 mi12:55:052:27:277:5526:20
8:29
#12557
20M
20.00 mi13:06:252:38:477:5611:20
8:20
#12548
21M
21.00 mi13:15:552:48:178:019:30
9:30
#12756
35K
21.75 mi13:21:582:54:208:016:03
8:05
#12751
23M
23.00 mi13:32:473:05:098:0310:49
8:38
#12846
24M
24.00 mi13:41:043:13:268:048:17
8:17
#12843
40K
24.85 mi13:48:183:20:408:047:14
8:28
#12837
25.2M
25.20 mi13:51:283:23:508:053:10
9:11
#12848
Finish
26.22 mi13:59:473:32:098:068:19
8:10
#12842
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi116962694269411805(Top 44%)2799(Top 25%)2799(Top 149%)
10K6.21 mi3.10 mi11546+1502629+652629+6511504(Top 43%)2606(Top 23%)2606(Top 139%)
15K9.32 mi3.11 mi11600-542663-342663-3411805(Top 44%)2799(Top 25%)2799(Top 149%)
20K12.43 mi3.11 mi11757-1572774-1112774-11112362(Top 46%)3178(Top 28%)3178(Top 169%)
Half13.11 mi0.68 mi11862-1052835-612835-6113733(Top 52%)3920(Top 34%)3920(Top 209%)
25K15.53 mi2.42 mi12157-2953028-1933028-19313684(Top 51%)4019(Top 35%)4019(Top 214%)
30K18.64 mi3.11 mi12557-4003292-2643292-26414154(Top 53%)4420(Top 39%)4420(Top 235%)
20M20.00 mi1.36 mi12548+93301-93301-912634(Top 47%)3654(Top 32%)3654(Top 195%)
21M21.00 mi1.00 mi12756-2083446-1453446-14515954(Top 60%)5598(Top 49%)5598(Top 298%)
35K21.75 mi0.75 mi12751+53460-143460-1412739(Top 48%)3846(Top 34%)3846(Top 205%)
23M23.00 mi1.25 mi12846-953537-773537-7714022(Top 53%)4623(Top 40%)4623(Top 246%)
24M24.00 mi1.00 mi12843+33557-203557-2013178(Top 50%)4216(Top 37%)4216(Top 224%)
40K24.85 mi0.85 mi12837+63574-173574-1713090(Top 49%)4246(Top 37%)4246(Top 226%)
25.2M25.20 mi0.35 mi12848-113587-133587-1313578(Top 51%)4515(Top 40%)4515(Top 240%)
Finish26.22 mi1.02 mi12842+63607-203607-2013194(Top 50%)4303(Top 38%)4303(Top 229%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21stories
+97ft-345ft

Overall

11805

Females

2799

F40-44

2799

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

11504

Females

2606

F40-44

2606

10K→15K

6.2 - 9.3 mi

Top 44%
×3stories
+67ft-78ft

Overall

11805

Females

2799

F40-44

2799

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12362

Females

3178

F40-44

3178

20K→Half

12.4 - 13.1 mi

Top 52%
×2stories
+19ft-37ft

Overall

13733

Females

3920

F40-44

3920

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

13684

Females

4019

F40-44

4019

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

14154

Females

4420

F40-44

4420

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

12634

Females

3654

F40-44

3654

20M→21M

20.0 - 21.0 mi

Top 60%
×8stories
+106ft-24ft

Overall

15954

Females

5598

F40-44

5598

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

12739

Females

3846

F40-44

3846

35K→23M

21.8 - 23.0 mi

Top 53%
×5stories
+23ft-63ft

Overall

14022

Females

4623

F40-44

4623

23M→24M

23.0 - 24.0 mi

Top 50%
×6stories
+12ft-82ft

Overall

13178

Females

4216

F40-44

4216

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13090

Females

4246

F40-44

4246

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13578

Females

4515

F40-44

4515

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

13194

Females

4303

F40-44

4303

Passing Analysis

Category:
Athletes Passed
1289
Passed By
2435
Net Change
-1146
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11696
5K → 10K375225+150#11696#11546
10K → 15K161215-54#11546#11600
15K → 20K105262-157#11600#11757
20K → Half7112-105#11757#11862
Half → 25K57352-295#11862#12157
25K → 30K99499-400#12157#12557
30K → 20M10798+9#12557#12548
20M → 21M42250-208#12548#12756
21M → 35K5550+5#12756#12751
35K → 23M51146-95#12751#12846
23M → 24M7572+3#12846#12843
24M → 40K6559+6#12843#12837
40K → 25.2M2031-11#12837#12848
25.2M → Finish7064+6#12848#12842
TOTALS12892435-1146
📊

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