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BOSTON MARATHON 2023

Jessica Bloom

Bib: 31781•F

SC

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
10:14/mi
31:47
↑ 97↓ 3451.5%
10K· 6.21 mi
10:06/mi
1:03:10
↑ 79↓ 1380.4%
15K· 9.32 mi
10:03/mi
1:34:22
↑ 67↓ 78
20K· 12.43 mi
10:24/mi
2:06:42
↑ 106↓ 860.1%
Half· 13.11 mi
9:30/mi
2:13:11
↑ 19↓ 370.5%
25K· 15.53 mi
9:48/mi
2:36:56
↑ 66↓ 880.2%
30K· 18.64 mi
9:38/mi
3:06:52
↑ 181↓ 1480.2%
20M
9:50/mi
3:20:14
↑ 64↓ 500.2%
21M
9:51/mi
3:30:05
↑ 106↓ 241.6%
35K· 21.75 mi
8:53/mi
3:36:44
↑ 17↓ 861.7%
23M
9:18/mi
3:48:23
↑ 23↓ 630.6%
24M
9:06/mi
3:57:29
↓ 821.3%
40K· 24.85 mi
9:17/mi
4:05:25
↓ 200.3%
25.2M
9:52/mi
4:08:49
↑ 13↓ 160.2%
Finish· 26.22 mi
8:52/mi
4:17:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:13:11
Pace10:10 /mi
2nd Half✓ Faster
Distance13.11 mi
Time2:04:40
Pace9:31 /mi
📊Negative Split: 6.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:1031:4710:1431:47
10:14
-
10K
6.21 mi12:26:331:03:1010:1031:23
10:06
-0:08
15K
9.32 mi12:57:451:34:2210:0731:12
10:03
-0:03
20K
12.43 mi13:30:052:06:4210:1232:20
10:24
+0:21
Half
13.11 mi13:36:342:13:1110:106:29
9:30
-0:54
25K
15.53 mi14:00:192:36:5610:0623:45
9:48
+0:18
30K
18.64 mi14:30:153:06:5210:0129:56
9:38
-0:10
20M
20.00 mi14:43:373:20:1410:0113:22
9:50
+0:12
21M
21.00 mi14:53:283:30:0510:009:51
9:51
+0:01
35K
21.75 mi15:00:073:36:449:586:39
8:53
-0:58
23M
23.00 mi15:11:463:48:239:5611:39
9:18
+0:25
24M
24.00 mi15:20:523:57:299:549:06
9:06
-0:12
40K
24.85 mi15:28:484:05:259:527:56
9:17
+0:11
25.2M
25.20 mi15:32:124:08:499:523:24
9:52
+0:35
Finish
26.22 mi15:41:144:17:519:509:02
8:52
-1:00

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

8:52 /mi

Average Pace

9:50 /mi

Slowest Pace

10:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:47

31% of race

Time at Steady Pace

2:57:04

69% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:50 /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 mi11:55:1031:4710:1431:47
10:14
#24020
10K
6.21 mi12:26:331:03:1010:1031:23
10:06
#23989
15K
9.32 mi12:57:451:34:2210:0731:12
10:03
#23851
20K
12.43 mi13:30:052:06:4210:1232:20
10:24
#23814
Half
13.11 mi13:36:342:13:1110:106:29
9:30
#23741
25K
15.53 mi14:00:192:36:5610:0623:45
9:48
#23427
30K
18.64 mi14:30:153:06:5210:0129:56
9:38
#22846
20M
20.00 mi14:43:373:20:1410:0113:22
9:50
#22663
21M
21.00 mi14:53:283:30:0510:009:51
9:51
#22428
35K
21.75 mi15:00:073:36:449:586:39
8:53
#22284
23M
23.00 mi15:11:463:48:239:5611:39
9:18
#22083
24M
24.00 mi15:20:523:57:299:549:06
9:06
#21936
40K
24.85 mi15:28:484:05:259:527:56
9:17
#21801
25.2M
25.20 mi15:32:124:08:499:523:24
9:52
#21729
Finish
26.22 mi15:41:144:17:519:509:02
8:52
#21621
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi240209900990023574(Top 89%)9649(Top 84%)9649(Top 198%)
10K6.21 mi3.10 mi23989+319886+149886+1423911(Top 90%)9836(Top 86%)9836(Top 201%)
15K9.32 mi3.11 mi23851+1389807+799807+7923574(Top 89%)9649(Top 84%)9649(Top 198%)
20K12.43 mi3.11 mi23814+379787+209787+2023672(Top 89%)9727(Top 85%)9727(Top 199%)
Half13.11 mi0.68 mi23741+739748+399748+3922127(Top 83%)8851(Top 77%)8851(Top 181%)
25K15.53 mi2.42 mi23427+3149583+1659583+16521731(Top 82%)8693(Top 76%)8693(Top 178%)
30K18.64 mi3.11 mi22846+5819303+2809303+28019929(Top 75%)7727(Top 68%)7727(Top 158%)
20M20.00 mi1.36 mi22663+1839228+759228+7519988(Top 75%)7849(Top 69%)7849(Top 161%)
21M21.00 mi1.00 mi22428+2359107+1219107+12117477(Top 66%)6479(Top 57%)6479(Top 133%)
35K21.75 mi0.75 mi22284+1449026+819026+8117447(Top 66%)6540(Top 57%)6540(Top 134%)
23M23.00 mi1.25 mi22083+2018919+1078919+10717569(Top 66%)6623(Top 58%)6623(Top 136%)
24M24.00 mi1.00 mi21936+1478841+788841+7817704(Top 67%)6755(Top 59%)6755(Top 138%)
40K24.85 mi0.85 mi21801+1358789+528789+5217469(Top 66%)6678(Top 58%)6678(Top 137%)
25.2M25.20 mi0.35 mi21729+728758+318758+3116906(Top 64%)6397(Top 56%)6397(Top 131%)
Finish26.22 mi1.02 mi21621+1088708+508708+5017376(Top 65%)6584(Top 58%)6584(Top 135%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

23574

Females

9649

F18-39

9649

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

23911

Females

9836

F18-39

9836

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

23574

Females

9649

F18-39

9649

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

23672

Females

9727

F18-39

9727

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

22127

Females

8851

F18-39

8851

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

21731

Females

8693

F18-39

8693

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19929

Females

7727

F18-39

7727

30K→20M

18.6 - 20.0 mi

Top 75%
×5story building
+64ft-50ft

Overall

19988

Females

7849

F18-39

7849

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17477

Females

6479

F18-39

6479

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

17447

Females

6540

F18-39

6540

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

17569

Females

6623

F18-39

6623

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

17704

Females

6755

F18-39

6755

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17469

Females

6678

F18-39

6678

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

16906

Females

6397

F18-39

6397

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

17376

Females

6584

F18-39

6584

Passing Analysis

Category:
Athletes Passed
2742
Passed By
343
Net Change
+2399
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24020
5K → 10K212181+31#24020#23989
10K → 15K19355+138#23989#23851
15K → 20K12992+37#23851#23814
20K → Half730+73#23814#23741
Half → 25K3184+314#23741#23427
25K → 30K5832+581#23427#22846
30K → 20M1841+183#22846#22663
20M → 21M2361+235#22663#22428
21M → 35K1440+144#22428#22284
35K → 23M2032+201#22284#22083
23M → 24M1470+147#22083#21936
24M → 40K1394+135#21936#21801
40K → 25.2M720+72#21801#21729
25.2M → Finish1091+108#21729#21621
TOTALS2742343+2399
📊

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