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BOSTON MARATHON 2023

Samantha Lagan

Bib: 25752•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:16
Rank: #21855
Start → 5K
29:16 | 9:25/mi
10K· 6.21 mi
57:50
Rank: #21756 (+99)
5K → 10K
28:34 | 9:12/mi
15K· 9.32 mi
1:26:12
Rank: #21530 (+226)
10K → 15K
28:22 | 9:08/mi
20K· 12.43 mi
1:54:48
Rank: #21304 (+226)
15K → 20K
28:36 | 9:12/mi
Half· 13.11 mi
2:01:07
Rank: #21310 (-6)
20K → Half
6:19 | 9:16/mi
25K· 15.53 mi
2:24:57
Rank: #21380 (-70)
Half → 25K
23:50 | 9:50/mi
30K· 18.64 mi
2:56:19
Rank: #21350 (+30)
25K → 30K
31:22 | 10:06/mi
20M
3:10:59
Rank: #21458 (-108)
30K → 20M
14:40 | 10:48/mi
21M
3:23:31
Rank: #21623 (-165)
20M → 21M
12:32 | 12:32/mi
35K· 21.75 mi
3:31:42
Rank: #21717 (-94)
21M → 35K
8:11 | 10:56/mi
23M
3:48:20
Rank: #22079 (-362)
35K → 23M
16:38 | 13:17/mi
24M
3:59:44
Rank: #22155 (-76)
23M → 24M
11:24 | 11:24/mi
40K· 24.85 mi
4:11:49
Rank: #22432 (-277)
24M → 40K
12:05 | 14:08/mi
25.2M
4:15:52
Rank: #22409 (+23)
40K → 25.2M
4:03 | 11:45/mi
Finish· 26.22 mi
4:27:30
Rank: #22516 (-107)
25.2M → Finish
11:38 | 11:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:07
Pace9:14 /mi
2nd Half
Distance13.11 mi
Time2:26:23
Pace11:10 /mi
📊Positive Split: 20.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:0929:169:2529:16
9:25
-
10K
6.21 mi12:13:4357:509:1828:34
9:12
-0:13
15K
9.32 mi12:42:051:26:129:1528:22
9:08
-0:04
20K
12.43 mi13:10:411:54:489:1428:36
9:12
+0:04
Half
13.11 mi13:17:002:01:079:146:19
9:16
+0:04
25K
15.53 mi13:40:502:24:579:2023:50
9:50
+0:34
30K
18.64 mi14:12:122:56:199:2831:22
10:06
+0:16
20M
20.00 mi14:26:523:10:599:3314:40
10:48
+0:42
21M
21.00 mi14:39:243:23:319:4112:32
12:32
+1:44
35K
21.75 mi14:47:353:31:429:448:11
10:56
-1:36
23M
23.00 mi15:04:133:48:209:5616:38
13:17
+2:21
24M
24.00 mi15:15:373:59:449:5911:24
11:24
-1:53
40K
24.85 mi15:27:424:11:4910:0812:05
14:08
+2:44
25.2M
25.20 mi15:31:454:15:5210:094:03
11:45
-2:23
Finish
26.22 mi15:43:234:27:3010:1311:38
11:25
-0:20

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

9:08 /mi

Average Pace

10:13 /mi

Slowest Pace

14:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:57

54% of race

Time at Steady Pace

1:17:15

29% of race

Time at Slower Pace

45:18

17% of race

Average Pace: 10:12 /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 mi11:45:0929:169:2529:16
9:25
#21855
10K
6.21 mi12:13:4357:509:1828:34
9:12
#21756
15K
9.32 mi12:42:051:26:129:1528:22
9:08
#21530
20K
12.43 mi13:10:411:54:489:1428:36
9:12
#21304
Half
13.11 mi13:17:002:01:079:146:19
9:16
#21310
25K
15.53 mi13:40:502:24:579:2023:50
9:50
#21380
30K
18.64 mi14:12:122:56:199:2831:22
10:06
#21350
20M
20.00 mi14:26:523:10:599:3314:40
10:48
#21458
21M
21.00 mi14:39:243:23:319:4112:32
12:32
#21623
35K
21.75 mi14:47:353:31:429:448:11
10:56
#21717
23M
23.00 mi15:04:133:48:209:5616:38
13:17
#22079
24M
24.00 mi15:15:373:59:449:5911:24
11:24
#22155
40K
24.85 mi15:27:424:11:4910:0812:05
14:08
#22432
25.2M
25.20 mi15:31:454:15:5210:094:03
11:45
#22409
Finish
26.22 mi15:43:234:27:3010:1311:38
11:25
#22516
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi218558813881321078(Top 79%)8280(Top 72%)8280(Top 170%)
10K6.21 mi3.10 mi21756+998719+948719+9421615(Top 81%)8610(Top 75%)8610(Top 176%)
15K9.32 mi3.11 mi21530+2268575+1448575+14421078(Top 79%)8280(Top 72%)8280(Top 170%)
20K12.43 mi3.11 mi21304+2268433+1428433+14220608(Top 77%)8015(Top 70%)8015(Top 164%)
Half13.11 mi0.68 mi21310-68440-78440-721401(Top 80%)8473(Top 74%)8473(Top 173%)
25K15.53 mi2.42 mi21380-708480-408480-4021825(Top 82%)8737(Top 76%)8737(Top 179%)
30K18.64 mi3.11 mi21350+308479+18479+121284(Top 80%)8509(Top 74%)8509(Top 174%)
20M20.00 mi1.36 mi21458-1088546-678546-6722344(Top 84%)9163(Top 80%)9163(Top 188%)
21M21.00 mi1.00 mi21623-1658646-1008646-10023495(Top 88%)9808(Top 86%)9808(Top 201%)
35K21.75 mi0.75 mi21717-948703-578703-5723200(Top 87%)9693(Top 85%)9693(Top 198%)
23M23.00 mi1.25 mi22079-3628917-2148917-21425353(Top 95%)10821(Top 95%)10821(Top 222%)
24M24.00 mi1.00 mi22155-768972-558972-5523743(Top 89%)10026(Top 88%)10026(Top 205%)
40K24.85 mi0.85 mi22432-2779134-1629134-16225752(Top 97%)11051(Top 97%)11051(Top 226%)
25.2M25.20 mi0.35 mi22409+239123+119123+1122069(Top 83%)9164(Top 80%)9164(Top 188%)
Finish26.22 mi1.02 mi22516-1079193-709193-7024579(Top 92%)10445(Top 91%)10445(Top 214%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

21078

Females

8280

F18-39

8280

5K→10K

3.1 - 6.2 mi

Top 81%
×5stories
+79ft-138ft

Overall

21615

Females

8610

F18-39

8610

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

21078

Females

8280

F18-39

8280

15K→20K

9.3 - 12.4 mi

Top 77%
×5stories
+106ft-86ft

Overall

20608

Females

8015

F18-39

8015

20K→Half

12.4 - 13.1 mi

Top 80%
×2stories
+19ft-37ft

Overall

21401

Females

8473

F18-39

8473

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

21825

Females

8737

F18-39

8737

25K→30K

15.5 - 18.6 mi

Top 80%
×9stories
+181ft-148ft

Overall

21284

Females

8509

F18-39

8509

30K→20M

18.6 - 20.0 mi

Top 84%
×5stories
+64ft-50ft

Overall

22344

Females

9163

F18-39

9163

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

23495

Females

9808

F18-39

9808

21M→35K

21.0 - 21.8 mi

Top 87%
×7stories
+17ft-86ft

Overall

23200

Females

9693

F18-39

9693

35K→23M

21.8 - 23.0 mi

Top 95%
×5stories
+23ft-63ft

Overall

25353

Females

10821

F18-39

10821

23M→24M

23.0 - 24.0 mi

Top 89%
×6stories
+12ft-82ft

Overall

23743

Females

10026

F18-39

10026

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

25752

Females

11051

F18-39

11051

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

22069

Females

9164

F18-39

9164

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

24579

Females

10445

F18-39

10445

Passing Analysis

Category:
Athletes Passed
1290
Passed By
1951
Net Change
-661
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21855
5K → 10K315216+99#21855#21756
10K → 15K29771+226#21756#21530
15K → 20K27650+226#21530#21304
20K → Half2228-6#21304#21310
Half → 25K77147-70#21310#21380
25K → 30K144114+30#21380#21350
30K → 20M44152-108#21350#21458
20M → 21M20185-165#21458#21623
21M → 35K16110-94#21623#21717
35K → 23M8370-362#21717#22079
23M → 24M25101-76#22079#22155
24M → 40K1278-277#22155#22432
40K → 25.2M285+23#22432#22409
25.2M → Finish17124-107#22409#22516
TOTALS12901951-661
📊

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