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BOSTON MARATHON 2023

Jessica Larson

Bib: 30366•F

MT

0:00
0:00
/ mi
Masters
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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
32:32
Rank: #24634
Start → 5K
32:32 | 10:28/mi
10K· 6.21 mi
1:03:49
Rank: #24208 (+426)
5K → 10K
31:17 | 10:04/mi
15K· 9.32 mi
1:35:49
Rank: #24174 (+34)
10K → 15K
32:00 | 10:18/mi
20K· 12.43 mi
2:07:35
Rank: #23955 (+219)
15K → 20K
31:46 | 10:13/mi
Half· 13.11 mi
2:14:31
Rank: #23926 (+29)
20K → Half
6:56 | 10:10/mi
25K· 15.53 mi
2:39:44
Rank: #23740 (+186)
Half → 25K
25:13 | 10:24/mi
30K· 18.64 mi
3:12:48
Rank: #23513 (+227)
25K → 30K
33:04 | 10:39/mi
20M
3:27:24
Rank: #23426 (+87)
30K → 20M
14:36 | 10:45/mi
21M
3:38:29
Rank: #23309 (+117)
20M → 21M
11:05 | 11:05/mi
35K· 21.75 mi
3:46:07
Rank: #23242 (+67)
21M → 35K
7:38 | 10:12/mi
23M
3:59:14
Rank: #23139 (+103)
35K → 23M
13:07 | 10:29/mi
24M
4:09:28
Rank: #23063 (+76)
23M → 24M
10:14 | 10:14/mi
40K· 24.85 mi
4:18:23
Rank: #22973 (+90)
24M → 40K
8:55 | 10:26/mi
25.2M
4:22:07
Rank: #22933 (+40)
40K → 25.2M
3:44 | 10:50/mi
Finish· 26.22 mi
4:31:50
Rank: #22875 (+58)
25.2M → Finish
9:43 | 9:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:14:31
Pace10:16 /mi
2nd Half
Distance13.11 mi
Time2:17:19
Pace10:28 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:4732:3210:2832:32
10:28
-
10K
6.21 mi12:24:041:03:4910:1631:17
10:04
-0:24
15K
9.32 mi12:56:041:35:4910:1732:00
10:18
+0:14
20K
12.43 mi13:27:502:07:3510:1631:46
10:13
-0:05
Half
13.11 mi13:34:462:14:3110:166:56
10:10
-0:03
25K
15.53 mi13:59:592:39:4410:1725:13
10:24
+0:14
30K
18.64 mi14:33:033:12:4810:2133:04
10:39
+0:15
20M
20.00 mi14:47:393:27:2410:2214:36
10:45
+0:06
21M
21.00 mi14:58:443:38:2910:2411:05
11:05
+0:20
35K
21.75 mi15:06:223:46:0710:247:38
10:12
-0:53
23M
23.00 mi15:19:293:59:1410:2413:07
10:29
+0:17
24M
24.00 mi15:29:434:09:2810:2410:14
10:14
-0:15
40K
24.85 mi15:38:384:18:2310:248:55
10:26
+0:12
25.2M
25.20 mi15:42:224:22:0710:243:44
10:50
+0:24
Finish
26.22 mi15:52:054:31:5010:239:43
9:32
-1:18

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

9:32 /mi

Average Pace

10:23 /mi

Slowest Pace

11:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:29:21

77% of race

Time at Steady Pace

1:02:29

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:22 /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 mi11:52:4732:3210:2832:32
10:28
#24634
10K
6.21 mi12:24:041:03:4910:1631:17
10:04
#24208
15K
9.32 mi12:56:041:35:4910:1732:00
10:18
#24174
20K
12.43 mi13:27:502:07:3510:1631:46
10:13
#23955
Half
13.11 mi13:34:462:14:3110:166:56
10:10
#23926
25K
15.53 mi13:59:592:39:4410:1725:13
10:24
#23740
30K
18.64 mi14:33:033:12:4810:2133:04
10:39
#23513
20M
20.00 mi14:47:393:27:2410:2214:36
10:45
#23426
21M
21.00 mi14:58:443:38:2910:2411:05
11:05
#23309
35K
21.75 mi15:06:223:46:0710:247:38
10:12
#23242
23M
23.00 mi15:19:293:59:1410:2413:07
10:29
#23139
24M
24.00 mi15:29:434:09:2810:2410:14
10:14
#23063
40K
24.85 mi15:38:384:18:2310:248:55
10:26
#22973
25.2M
25.20 mi15:42:224:22:0710:243:44
10:50
#22933
Finish
26.22 mi15:52:054:31:5010:239:43
9:32
#22875
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi24634102331023324096(Top 91%)9945(Top 87%)9945(Top 530%)
10K6.21 mi3.10 mi24208+4269999+2349999+23423837(Top 90%)9800(Top 86%)9800(Top 522%)
15K9.32 mi3.11 mi24174+349987+129987+1224096(Top 91%)9945(Top 87%)9945(Top 530%)
20K12.43 mi3.11 mi23955+2199864+1239864+12323339(Top 88%)9536(Top 83%)9536(Top 508%)
Half13.11 mi0.68 mi23926+299847+179847+1723608(Top 89%)9682(Top 85%)9682(Top 516%)
25K15.53 mi2.42 mi23740+1869759+889759+8823017(Top 86%)9399(Top 82%)9399(Top 500%)
30K18.64 mi3.11 mi23513+2279654+1059654+10522501(Top 85%)9186(Top 80%)9186(Top 489%)
20M20.00 mi1.36 mi23426+879620+349620+3422254(Top 84%)9119(Top 80%)9119(Top 486%)
21M21.00 mi1.00 mi23309+1179561+599561+5921010(Top 79%)8469(Top 74%)8469(Top 451%)
35K21.75 mi0.75 mi23242+679534+279534+2721808(Top 82%)8942(Top 78%)8942(Top 476%)
23M23.00 mi1.25 mi23139+1039493+419493+4121279(Top 80%)8673(Top 76%)8673(Top 462%)
24M24.00 mi1.00 mi23063+769472+219472+2121427(Top 80%)8808(Top 77%)8808(Top 469%)
40K24.85 mi0.85 mi22973+909430+429430+4221067(Top 79%)8656(Top 76%)8656(Top 461%)
25.2M25.20 mi0.35 mi22933+409407+239407+2320094(Top 75%)8125(Top 71%)8125(Top 433%)
Finish26.22 mi1.02 mi22875+589387+209387+2020277(Top 76%)8170(Top 72%)8170(Top 435%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21stories
+97ft-345ft

Overall

24096

Females

9945

F40-44

9945

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

23837

Females

9800

F40-44

9800

10K→15K

6.2 - 9.3 mi

Top 91%
×3stories
+67ft-78ft

Overall

24096

Females

9945

F40-44

9945

15K→20K

9.3 - 12.4 mi

Top 88%
×5stories
+106ft-86ft

Overall

23339

Females

9536

F40-44

9536

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

23608

Females

9682

F40-44

9682

Half→25K

13.1 - 15.5 mi

Top 86%
×4stories
+66ft-88ft

Overall

23017

Females

9399

F40-44

9399

25K→30K

15.5 - 18.6 mi

Top 85%
×9stories
+181ft-148ft

Overall

22501

Females

9186

F40-44

9186

30K→20M

18.6 - 20.0 mi

Top 84%
×5stories
+64ft-50ft

Overall

22254

Females

9119

F40-44

9119

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

21010

Females

8469

F40-44

8469

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

21808

Females

8942

F40-44

8942

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21279

Females

8673

F40-44

8673

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

21427

Females

8808

F40-44

8808

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

21067

Females

8656

F40-44

8656

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

20094

Females

8125

F40-44

8125

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2stories
+22ft-21ft

Overall

20277

Females

8170

F40-44

8170

Passing Analysis

Category:
Athletes Passed
2026
Passed By
267
Net Change
+1759
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24634
5K → 10K47751+426#24634#24208
10K → 15K141107+34#24208#24174
15K → 20K24526+219#24174#23955
20K → Half4011+29#23955#23926
Half → 25K1948+186#23926#23740
25K → 30K23912+227#23740#23513
30K → 20M9912+87#23513#23426
20M → 21M1269+117#23426#23309
21M → 35K703+67#23309#23242
35K → 23M1096+103#23242#23139
23M → 24M837+76#23139#23063
24M → 40K966+90#23063#22973
40K → 25.2M400+40#22973#22933
25.2M → Finish679+58#22933#22875
TOTALS2026267+1759
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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