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BOSTON MARATHON 2023

Jennifer Flood

Bib: 27470•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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:50/mi
30:34
↑ 97↓ 3451.5%
10K· 6.21 mi
8:41/mi
57:32
↑ 79↓ 1380.4%
15K· 9.32 mi
8:28/mi
1:23:51
↑ 67↓ 78
20K· 12.43 mi
8:32/mi
1:50:21
↑ 106↓ 860.1%
Half· 13.11 mi
8:23/mi
1:56:04
↑ 19↓ 370.5%
25K· 15.53 mi
8:36/mi
2:16:56
↑ 66↓ 880.2%
30K· 18.64 mi
8:28/mi
2:43:15
↑ 181↓ 1480.2%
20M
8:20/mi
2:54:34
↑ 64↓ 500.2%
21M
8:39/mi
3:03:13
↑ 106↓ 241.6%
35K· 21.75 mi
8:27/mi
3:09:32
↑ 17↓ 861.7%
23M
8:31/mi
3:20:12
↑ 23↓ 630.6%
24M
8:29/mi
3:28:41
↓ 821.3%
40K· 24.85 mi
8:30/mi
3:35:57
↓ 200.3%
25.2M
8:59/mi
3:39:03
↑ 13↓ 160.2%
Finish· 26.22 mi
7:37/mi
3:46:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:56:04
Pace8:51 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:50:45
Pace8:27 /mi
📊Negative Split: 4.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:3330:349:5030:34
9:50
-
10K
6.21 mi12:15:3157:329:1626:58
8:41
-1:09
15K
9.32 mi12:41:501:23:519:0026:19
8:28
-0:13
20K
12.43 mi13:08:201:50:218:5326:30
8:32
+0:04
Half
13.11 mi13:14:031:56:048:515:43
8:23
-0:09
25K
15.53 mi13:34:552:16:568:4920:52
8:36
+0:13
30K
18.64 mi14:01:142:43:158:4526:19
8:28
-0:08
20M
20.00 mi14:12:332:54:348:4411:19
8:20
-0:08
21M
21.00 mi14:21:123:03:138:438:39
8:39
+0:19
35K
21.75 mi14:27:313:09:328:436:19
8:27
-0:12
23M
23.00 mi14:38:113:20:128:4210:40
8:31
+0:04
24M
24.00 mi14:46:403:28:418:428:29
8:29
-0:02
40K
24.85 mi14:53:563:35:578:417:16
8:30
+0:01
25.2M
25.20 mi14:57:023:39:038:423:06
8:59
+0:29
Finish
26.22 mi15:04:483:46:498:397:46
7:37
-1:22

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

8:39 /mi

Slowest Pace

9:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

7:46

3% of race

Time at Steady Pace

3:05:23

82% of race

Time at Slower Pace

33:40

15% of race

Average Pace: 8:39 /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 mi11:48:3330:349:5030:34
9:50
#23020
10K
6.21 mi12:15:3157:329:1626:58
8:41
#21601
15K
9.32 mi12:41:501:23:519:0026:19
8:28
#20550
20K
12.43 mi13:08:201:50:218:5326:30
8:32
#19746
Half
13.11 mi13:14:031:56:048:515:43
8:23
#19616
25K
15.53 mi13:34:552:16:568:4920:52
8:36
#19166
30K
18.64 mi14:01:142:43:158:4526:19
8:28
#18318
20M
20.00 mi14:12:332:54:348:4411:19
8:20
#17896
21M
21.00 mi14:21:123:03:138:438:39
8:39
#17531
35K
21.75 mi14:27:313:09:328:436:19
8:27
#17436
23M
23.00 mi14:38:113:20:128:4210:40
8:31
#17196
24M
24.00 mi14:46:403:28:418:428:29
8:29
#17062
40K
24.85 mi14:53:563:35:578:417:16
8:30
#16928
25.2M
25.20 mi14:57:023:39:038:423:06
8:59
#16862
Finish
26.22 mi15:04:483:46:498:397:46
7:37
#16574
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi230209401940117609(Top 66%)6275(Top 55%)6275(Top 128%)
10K6.21 mi3.10 mi21601+14198635+7668635+76619311(Top 73%)7269(Top 64%)7269(Top 149%)
15K9.32 mi3.11 mi20550+10518043+5928043+59217609(Top 66%)6275(Top 55%)6275(Top 128%)
20K12.43 mi3.11 mi19746+8047568+4757568+47517048(Top 64%)5951(Top 52%)5951(Top 122%)
Half13.11 mi0.68 mi19616+1307492+767492+7617045(Top 64%)5924(Top 52%)5924(Top 121%)
25K15.53 mi2.42 mi19166+4507216+2767216+27616845(Top 63%)5918(Top 52%)5918(Top 121%)
30K18.64 mi3.11 mi18318+8486753+4636753+46314134(Top 53%)4417(Top 39%)4417(Top 90%)
20M20.00 mi1.36 mi17896+4226522+2316522+23112580(Top 47%)3637(Top 32%)3637(Top 74%)
21M21.00 mi1.00 mi17531+3656314+2086314+20811407(Top 43%)3105(Top 27%)3105(Top 64%)
35K21.75 mi0.75 mi17436+956264+506264+5015032(Top 56%)5137(Top 45%)5137(Top 105%)
23M23.00 mi1.25 mi17196+2406131+1336131+13313387(Top 50%)4291(Top 38%)4291(Top 88%)
24M24.00 mi1.00 mi17062+1346078+536078+5314420(Top 54%)4914(Top 43%)4914(Top 101%)
40K24.85 mi0.85 mi16928+1346021+576021+5713394(Top 50%)4430(Top 39%)4430(Top 91%)
25.2M25.20 mi0.35 mi16862+665987+345987+3412588(Top 47%)4047(Top 35%)4047(Top 83%)
Finish26.22 mi1.02 mi16574+2885825+1625825+1629477(Top 36%)2482(Top 22%)2482(Top 51%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

17609

Females

6275

F18-39

6275

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

19311

Females

7269

F18-39

7269

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

17609

Females

6275

F18-39

6275

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

17048

Females

5951

F18-39

5951

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

17045

Females

5924

F18-39

5924

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

16845

Females

5918

F18-39

5918

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

14134

Females

4417

F18-39

4417

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

12580

Females

3637

F18-39

3637

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

11407

Females

3105

F18-39

3105

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

15032

Females

5137

F18-39

5137

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

13387

Females

4291

F18-39

4291

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

14420

Females

4914

F18-39

4914

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13394

Females

4430

F18-39

4430

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12588

Females

4047

F18-39

4047

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9477

Females

2482

F18-39

2482

Passing Analysis

Category:
Athletes Passed
6504
Passed By
58
Net Change
+6446
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23020
5K → 10K14234+1419#23020#21601
10K → 15K10532+1051#21601#20550
15K → 20K8062+804#20550#19746
20K → Half1333+130#19746#19616
Half → 25K4566+450#19616#19166
25K → 30K8513+848#19166#18318
30K → 20M4220+422#18318#17896
20M → 21M3661+365#17896#17531
21M → 35K1049+95#17531#17436
35K → 23M25111+240#17436#17196
23M → 24M1428+134#17196#17062
24M → 40K1384+134#17062#16928
40K → 25.2M715+66#16928#16862
25.2M → Finish2880+288#16862#16574
TOTALS650458+6446
📊

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