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BOSTON MARATHON 2023

Jessica Bozek

Bib: 12159•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 25%
Gender (Female)
#0 / 11423
Top 7%
Masters (Masters Women)
#0 / 6539
Top 2%
Division (F45-49)
#0 / 1817
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:17
Rank: #9582
Start → 5K
7:30/mi
23:17 split
10K· 6.21 mi
45:51
Rank: #9025 (+557)
5K → 10K
7:16/mi
22:34 split
15K· 9.32 mi
1:08:20
Rank: #8697 (+328)
10K → 15K
7:14/mi
22:29 split
20K· 12.43 mi
1:30:56
Rank: #8370 (+327)
15K → 20K
7:16/mi
22:36 split
Half· 13.11 mi
1:35:48
Rank: #8313 (+57)
20K → Half
7:08/mi
4:52 split
25K· 15.53 mi
1:53:29
Rank: #8109 (+204)
Half → 25K
7:18/mi
17:41 split
30K· 18.64 mi
2:16:18
Rank: #7717 (+392)
25K → 30K
7:21/mi
22:49 split
20M
2:26:10
Rank: #7496 (+221)
30K → 20M
7:16/mi
9:52 split
21M
2:33:44
Rank: #7332 (+164)
20M → 21M
7:34/mi
7:34 split
35K· 21.75 mi
2:38:58
Rank: #7234 (+98)
21M → 35K
7:00/mi
5:14 split
23M
2:47:59
Rank: #7024 (+210)
35K → 23M
7:12/mi
9:01 split
24M
2:54:58
Rank: #6880 (+144)
23M → 24M
6:59/mi
6:59 split
40K· 24.85 mi
3:01:12
Rank: #6790 (+90)
24M → 40K
7:17/mi
6:14 split
25.2M
3:03:50
Rank: #6726 (+64)
40K → 25.2M
7:38/mi
2:38 split
Finish· 26.22 mi
3:10:46
Rank: #6586 (+140)
25.2M → Finish
6:48/mi
6:56 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:35:48
Pace7:18 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:34:58
Pace7:15 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:5923:177:3023:17
7:30
-
10K
6.21 mi11:15:3345:517:2322:34
7:16
-0:14
15K
9.32 mi11:38:021:08:207:2022:29
7:14
-0:02
20K
12.43 mi12:00:381:30:567:1922:36
7:16
+0:02
Half
13.11 mi12:05:301:35:487:184:52
7:08
-0:08
25K
15.53 mi12:23:111:53:297:1817:41
7:18
+0:10
30K
18.64 mi12:46:002:16:187:1922:49
7:21
+0:03
20M
20.00 mi12:55:522:26:107:189:52
7:16
-0:05
21M
21.00 mi13:03:262:33:447:197:34
7:34
+0:18
35K
21.75 mi13:08:402:38:587:195:14
7:00
-0:34
23M
23.00 mi13:17:412:47:597:189:01
7:12
+0:12
24M
24.00 mi13:24:402:54:587:176:59
6:59
-0:13
40K
24.85 mi13:30:543:01:127:176:14
7:17
+0:18
25.2M
25.20 mi13:33:323:03:507:182:38
7:38
+0:21
Finish
26.22 mi13:40:283:10:467:176:56
6:48
-0:50

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

6:48 /mi

Average Pace

7:17 /mi

Slowest Pace

7:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:37:17

82% of race

Time at Steady Pace

33:29

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:17 /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 mi10:52:5923:177:3023:17
7:30
#9582
10K
6.21 mi11:15:3345:517:2322:34
7:16
#9025
15K
9.32 mi11:38:021:08:207:2022:29
7:14
#8697
20K
12.43 mi12:00:381:30:567:1922:36
7:16
#8370
Half
13.11 mi12:05:301:35:487:184:52
7:08
#8313
25K
15.53 mi12:23:111:53:297:1817:41
7:18
#8109
30K
18.64 mi12:46:002:16:187:1922:49
7:21
#7717
20M
20.00 mi12:55:522:26:107:189:52
7:16
#7496
21M
21.00 mi13:03:262:33:447:197:34
7:34
#7332
35K
21.75 mi13:08:402:38:587:195:14
7:00
#7234
23M
23.00 mi13:17:412:47:597:189:01
7:12
#7024
24M
24.00 mi13:24:402:54:587:176:59
6:59
#6880
40K
24.85 mi13:30:543:01:127:176:14
7:17
#6790
25.2M
25.20 mi13:33:323:03:507:182:38
7:38
#6726
Finish
26.22 mi13:40:283:10:467:176:56
6:48
#6586
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi9582164816488067(Top 30%)1089(Top 10%)1089(Top 60%)
10K6.21 mi3.10 mi9025+5571425+2231425+2238590(Top 32%)1251(Top 11%)1251(Top 69%)
15K9.32 mi3.11 mi8697+3281304+1211304+1218067(Top 30%)1089(Top 10%)1089(Top 60%)
20K12.43 mi3.11 mi8370+3271181+1231181+1237605(Top 29%)961(Top 8%)961(Top 53%)
Half13.11 mi0.68 mi8313+571163+181163+187433(Top 28%)890(Top 8%)890(Top 49%)
25K15.53 mi2.42 mi8109+2041121+421121+427259(Top 27%)922(Top 8%)922(Top 51%)
30K18.64 mi3.11 mi7717+3921009+1121009+1126292(Top 24%)708(Top 6%)708(Top 39%)
20M20.00 mi1.36 mi7496+221956+53956+535443(Top 20%)562(Top 5%)562(Top 31%)
21M21.00 mi1.00 mi7332+164911+45911+454954(Top 19%)515(Top 5%)515(Top 28%)
35K21.75 mi0.75 mi7234+98888+23888+235364(Top 20%)590(Top 5%)590(Top 32%)
23M23.00 mi1.25 mi7024+210849+39849+394824(Top 18%)497(Top 4%)497(Top 27%)
24M24.00 mi1.00 mi6880+144821+28821+284634(Top 17%)479(Top 4%)479(Top 26%)
40K24.85 mi0.85 mi6790+90814+7814+75426(Top 20%)781(Top 7%)781(Top 43%)
25.2M25.20 mi0.35 mi6726+64804+10804+104639(Top 17%)611(Top 5%)611(Top 34%)
Finish26.22 mi1.02 mi6586+140775+29775+294120(Top 15%)487(Top 4%)487(Top 27%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

8067

Females

1089

F45-49

1089

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

8590

Females

1251

F45-49

1251

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

8067

Females

1089

F45-49

1089

15K→20K

9.3 - 12.4 mi

Top 29%
×5story building
+106ft-86ft

Overall

7605

Females

961

F45-49

961

20K→Half

12.4 - 13.1 mi

Top 28%
×2story building
+19ft-37ft

Overall

7433

Females

890

F45-49

890

Half→25K

13.1 - 15.5 mi

Top 27%
×4story building
+66ft-88ft

Overall

7259

Females

922

F45-49

922

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6292

Females

708

F45-49

708

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5443

Females

562

F45-49

562

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

4954

Females

515

F45-49

515

21M→35K

21.0 - 21.8 mi

Top 20%
×7story building
+17ft-86ft

Overall

5364

Females

590

F45-49

590

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

4824

Females

497

F45-49

497

23M→24M

23.0 - 24.0 mi

Top 17%
×6story building
+12ft-82ft

Overall

4634

Females

479

F45-49

479

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5426

Females

781

F45-49

781

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4639

Females

611

F45-49

611

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4120

Females

487

F45-49

487

Passing Analysis

Category:
Athletes Passed
3200
Passed By
204
Net Change
+2996
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9582
5K → 10K64184+557#9582#9025
10K → 15K35830+328#9025#8697
15K → 20K34215+327#8697#8370
20K → Half603+57#8370#8313
Half → 25K23228+204#8313#8109
25K → 30K40311+392#8109#7717
30K → 20M2232+221#7717#7496
20M → 21M1684+164#7496#7332
21M → 35K1035+98#7332#7234
35K → 23M2166+210#7234#7024
23M → 24M1462+144#7024#6880
24M → 40K999+90#6880#6790
40K → 25.2M662+64#6790#6726
25.2M → Finish1433+140#6726#6586
TOTALS3200204+2996
📊

Passing Visuals

Category:
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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