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BOSTON MARATHON 2023

Julie Lackey

Bib: 22749•F

MO

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:36
Rank: #18004
Start → 5K
26:36 | 8:34/mi
10K· 6.21 mi
53:13
Rank: #18300 (-296)
5K → 10K
26:37 | 8:34/mi
15K· 9.32 mi
1:20:35
Rank: #18736 (-436)
10K → 15K
27:22 | 8:49/mi
20K· 12.43 mi
1:50:22
Rank: #19762 (-1026)
15K → 20K
29:47 | 9:35/mi
Half· 13.11 mi
1:56:50
Rank: #19914 (-152)
20K → Half
6:28 | 9:29/mi
25K· 15.53 mi
2:21:25
Rank: #20586 (-672)
Half → 25K
24:35 | 10:08/mi
30K· 18.64 mi
2:58:56
Rank: #21742 (-1156)
25K → 30K
37:31 | 12:05/mi
20M
3:13:40
Rank: #21827 (-85)
30K → 20M
14:44 | 10:51/mi
21M
3:27:34
Rank: #22143 (-316)
20M → 21M
13:54 | 13:54/mi
35K· 21.75 mi
3:35:26
Rank: #22138 (+5)
21M → 35K
7:52 | 10:31/mi
23M
3:48:31
Rank: #22090 (+48)
35K → 23M
13:05 | 10:27/mi
24M
3:59:03
Rank: #22088 (+2)
23M → 24M
10:32 | 10:32/mi
40K· 24.85 mi
4:08:13
Rank: #22072 (+16)
24M → 40K
9:10 | 10:43/mi
25.2M
4:12:11
Rank: #22069 (+3)
40K → 25.2M
3:58 | 11:30/mi
Finish· 26.22 mi
4:23:00
Rank: #22105 (-36)
25.2M → Finish
10:49 | 10:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:50
Pace8:55 /mi
2nd Half
Distance13.11 mi
Time2:26:10
Pace11:09 /mi
📊Positive Split: 25.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:1226:368:3426:36
8:34
-
10K
6.21 mi11:44:4953:138:3426:37
8:34
0:00
15K
9.32 mi12:12:111:20:358:3927:22
8:49
+0:15
20K
12.43 mi12:41:581:50:228:5329:47
9:35
+0:46
Half
13.11 mi12:48:261:56:508:556:28
9:29
-0:06
25K
15.53 mi13:13:012:21:259:0624:35
10:08
+0:39
30K
18.64 mi13:50:322:58:569:3637:31
12:05
+1:57
20M
20.00 mi14:05:163:13:409:4114:44
10:51
-1:14
21M
21.00 mi14:19:103:27:349:5313:54
13:54
+3:03
35K
21.75 mi14:27:023:35:269:547:52
10:31
-3:23
23M
23.00 mi14:40:073:48:319:5613:05
10:27
-0:04
24M
24.00 mi14:50:393:59:039:5810:32
10:32
+0:05
40K
24.85 mi14:59:494:08:139:599:10
10:43
+0:11
25.2M
25.20 mi15:03:474:12:1110:003:58
11:30
+0:47
Finish
26.22 mi15:14:364:23:0010:0210:49
10:37
-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

8:34 /mi

Average Pace

10:02 /mi

Slowest Pace

13:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:50

44% of race

Time at Steady Pace

1:30:47

35% of race

Time at Slower Pace

55:23

21% of race

Average Pace: 10:02 /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 mi11:18:1226:368:3426:36
8:34
#18004
10K
6.21 mi11:44:4953:138:3426:37
8:34
#18300
15K
9.32 mi12:12:111:20:358:3927:22
8:49
#18736
20K
12.43 mi12:41:581:50:228:5329:47
9:35
#19762
Half
13.11 mi12:48:261:56:508:556:28
9:29
#19914
25K
15.53 mi13:13:012:21:259:0624:35
10:08
#20586
30K
18.64 mi13:50:322:58:569:3637:31
12:05
#21742
20M
20.00 mi14:05:163:13:409:4114:44
10:51
#21827
21M
21.00 mi14:19:103:27:349:5313:54
13:54
#22143
35K
21.75 mi14:27:023:35:269:547:52
10:31
#22138
23M
23.00 mi14:40:073:48:319:5613:05
10:27
#22090
24M
24.00 mi14:50:393:59:039:5810:32
10:32
#22088
40K
24.85 mi14:59:494:08:139:599:10
10:43
#22072
25.2M
25.20 mi15:03:474:12:1110:003:58
11:30
#22069
Finish
26.22 mi15:14:364:23:0010:0210:49
10:37
#22105
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi180046565656519585(Top 74%)7438(Top 65%)7438(Top 409%)
10K6.21 mi3.10 mi18300-2966698-1336698-13318670(Top 70%)6880(Top 60%)6880(Top 379%)
15K9.32 mi3.11 mi18736-4366965-2676965-26719585(Top 74%)7438(Top 65%)7438(Top 409%)
20K12.43 mi3.11 mi19762-10267581-6167581-61621815(Top 82%)8690(Top 76%)8690(Top 478%)
Half13.11 mi0.68 mi19914-1527674-937674-9322080(Top 83%)8829(Top 77%)8829(Top 486%)
25K15.53 mi2.42 mi20586-6728028-3548028-35422498(Top 85%)9114(Top 80%)9114(Top 502%)
30K18.64 mi3.11 mi21742-11568687-6598687-65924585(Top 92%)10331(Top 90%)10331(Top 569%)
20M20.00 mi1.36 mi21827-858746-598746-5922415(Top 84%)9204(Top 81%)9204(Top 507%)
21M21.00 mi1.00 mi22143-3168938-1928938-19224947(Top 94%)10583(Top 93%)10583(Top 582%)
35K21.75 mi0.75 mi22138+58941-38941-322429(Top 84%)9283(Top 81%)9283(Top 511%)
23M23.00 mi1.25 mi22090+488924+178924+1721203(Top 80%)8630(Top 76%)8630(Top 475%)
24M24.00 mi1.00 mi22088+28928-48928-422115(Top 83%)9164(Top 80%)9164(Top 504%)
40K24.85 mi0.85 mi22072+168931-38931-321773(Top 82%)9031(Top 79%)9031(Top 497%)
25.2M25.20 mi0.35 mi22069+38931893121600(Top 81%)8915(Top 78%)8915(Top 491%)
Finish26.22 mi1.02 mi22105-368964-338964-3323248(Top 87%)9772(Top 86%)9772(Top 538%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

19585

Females

7438

F45-49

7438

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

18670

Females

6880

F45-49

6880

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

19585

Females

7438

F45-49

7438

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

21815

Females

8690

F45-49

8690

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

22080

Females

8829

F45-49

8829

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

22498

Females

9114

F45-49

9114

25K→30K

15.5 - 18.6 mi

Top 92%
×9stories
+181ft-148ft

Overall

24585

Females

10331

F45-49

10331

30K→20M

18.6 - 20.0 mi

Top 84%
×5stories
+64ft-50ft

Overall

22415

Females

9204

F45-49

9204

20M→21M

20.0 - 21.0 mi

Top 94%
×8stories
+106ft-24ft

Overall

24947

Females

10583

F45-49

10583

21M→35K

21.0 - 21.8 mi

Top 84%
×7stories
+17ft-86ft

Overall

22429

Females

9283

F45-49

9283

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21203

Females

8630

F45-49

8630

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

22115

Females

9164

F45-49

9164

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21773

Females

9031

F45-49

9031

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

21600

Females

8915

F45-49

8915

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2stories
+22ft-21ft

Overall

23248

Females

9772

F45-49

9772

Passing Analysis

Category:
Athletes Passed
597
Passed By
4698
Net Change
-4101
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18004
5K → 10K185481-296#18004#18300
10K → 15K66502-436#18300#18736
15K → 20K241050-1026#18736#19762
20K → Half9161-152#19762#19914
Half → 25K13685-672#19914#20586
25K → 30K111167-1156#20586#21742
30K → 20M42127-85#21742#21827
20M → 21M12328-316#21827#22143
21M → 35K3025+5#22143#22138
35K → 23M7325+48#22138#22090
23M → 24M4038+2#22090#22088
24M → 40K4731+16#22088#22072
40K → 25.2M1916+3#22072#22069
25.2M → Finish2662-36#22069#22105
TOTALS5974698-4101
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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