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BOSTON MARATHON 2023

Juliana Souza

Bib: 19272•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Masters (Masters Women)
#0 / 6539
Top 17%
Division (F40-44)
#0 / 1878
Top 32%
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
7:56/mi
24:39
↑ 97↓ 3451.5%
10K· 6.21 mi
7:50/mi
48:58
↑ 79↓ 1380.4%
15K· 9.32 mi
7:45/mi
1:13:02
↑ 67↓ 78
20K· 12.43 mi
7:49/mi
1:37:20
↑ 106↓ 860.1%
Half· 13.11 mi
7:40/mi
1:42:34
↑ 19↓ 370.5%
25K· 15.53 mi
8:01/mi
2:02:00
↑ 66↓ 880.2%
30K· 18.64 mi
8:14/mi
2:27:36
↑ 181↓ 1480.2%
20M
8:17/mi
2:38:52
↑ 64↓ 500.2%
21M
8:54/mi
2:47:46
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:53:40
↑ 17↓ 861.7%
23M
8:20/mi
3:04:06
↑ 23↓ 630.6%
24M
7:55/mi
3:12:01
↓ 821.3%
40K· 24.85 mi
8:17/mi
3:19:06
↓ 200.3%
25.2M
9:25/mi
3:22:21
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
3:31:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:34
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time1:48:27
Pace8:16 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1924:397:5624:39
7:56
-
10K
6.21 mi11:40:3848:587:5324:19
7:50
-0:06
15K
9.32 mi12:04:421:13:027:5024:04
7:45
-0:05
20K
12.43 mi12:29:001:37:207:5024:18
7:49
+0:04
Half
13.11 mi12:34:141:42:347:495:14
7:40
-0:09
25K
15.53 mi12:53:402:02:007:5119:26
8:01
+0:21
30K
18.64 mi13:19:162:27:367:5525:36
8:14
+0:13
20M
20.00 mi13:30:322:38:527:5711:16
8:17
+0:03
21M
21.00 mi13:39:262:47:467:598:54
8:54
+0:37
35K
21.75 mi13:45:202:53:407:595:54
7:53
-1:01
23M
23.00 mi13:55:463:04:068:0010:26
8:20
+0:27
24M
24.00 mi14:03:413:12:018:007:55
7:55
-0:25
40K
24.85 mi14:10:463:19:068:017:05
8:17
+0:22
25.2M
25.20 mi14:14:013:22:218:023:15
9:25
+1:08
Finish
26.22 mi14:22:413:31:018:038:40
8:30
-0:55

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

7:40 /mi

Average Pace

8:03 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

29:18

14% of race

Time at Steady Pace

2:12:07

63% of race

Time at Slower Pace

49:36

24% of race

Average Pace: 8:03 /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 mi11:16:1924:397:5624:39
7:56
#13547
10K
6.21 mi11:40:3848:587:5324:19
7:50
#13426
15K
9.32 mi12:04:421:13:027:5024:04
7:45
#13009
20K
12.43 mi12:29:001:37:207:5024:18
7:49
#12691
Half
13.11 mi12:34:141:42:347:495:14
7:40
#12612
25K
15.53 mi12:53:402:02:007:5119:26
8:01
#12639
30K
18.64 mi13:19:162:27:367:5525:36
8:14
#12622
20M
20.00 mi13:30:322:38:527:5711:16
8:17
#12580
21M
21.00 mi13:39:262:47:467:598:54
8:54
#12573
35K
21.75 mi13:45:202:53:407:595:54
7:53
#12509
23M
23.00 mi13:55:463:04:068:0010:26
8:20
#12478
24M
24.00 mi14:03:413:12:018:007:55
7:55
#12384
40K
24.85 mi14:10:463:19:068:017:05
8:17
#12368
25.2M
25.20 mi14:14:013:22:218:023:15
9:25
#12419
Finish
26.22 mi14:22:413:31:018:038:40
8:30
#12541
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi135473749374912280(Top 46%)3067(Top 27%)3067(Top 163%)
10K6.21 mi3.10 mi13426+1213693+563693+5613372(Top 50%)3643(Top 32%)3643(Top 194%)
15K9.32 mi3.11 mi13009+4173463+2303463+23012280(Top 46%)3067(Top 27%)3067(Top 163%)
20K12.43 mi3.11 mi12691+3183303+1603303+16011939(Top 45%)2936(Top 26%)2936(Top 156%)
Half13.11 mi0.68 mi12612+793269+343269+3411735(Top 44%)2779(Top 24%)2779(Top 148%)
25K15.53 mi2.42 mi12639-273299-303299-3012877(Top 48%)3560(Top 31%)3560(Top 190%)
30K18.64 mi3.11 mi12622+173332-333332-3312616(Top 47%)3532(Top 31%)3532(Top 188%)
20M20.00 mi1.36 mi12580+423322+103322+1012319(Top 46%)3470(Top 30%)3470(Top 185%)
21M21.00 mi1.00 mi12573+73339-173339-1712861(Top 48%)3869(Top 34%)3869(Top 206%)
35K21.75 mi0.75 mi12509+643318+213318+2111348(Top 43%)3055(Top 27%)3055(Top 163%)
23M23.00 mi1.25 mi12478+313315+33315+312149(Top 46%)3599(Top 32%)3599(Top 192%)
24M24.00 mi1.00 mi12384+943287+283287+2810694(Top 40%)2938(Top 26%)2938(Top 156%)
40K24.85 mi0.85 mi12368+163297-103297-1011946(Top 45%)3636(Top 32%)3636(Top 194%)
25.2M25.20 mi0.35 mi12419-513338-413338-4114833(Top 56%)5191(Top 45%)5191(Top 276%)
Finish26.22 mi1.02 mi12541-1223433-953433-9515454(Top 58%)5501(Top 48%)5501(Top 293%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

12280

Females

3067

F40-44

3067

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

13372

Females

3643

F40-44

3643

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

12280

Females

3067

F40-44

3067

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

11939

Females

2936

F40-44

2936

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

11735

Females

2779

F40-44

2779

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

12877

Females

3560

F40-44

3560

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

12616

Females

3532

F40-44

3532

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

12319

Females

3470

F40-44

3470

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

12861

Females

3869

F40-44

3869

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

11348

Females

3055

F40-44

3055

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

12149

Females

3599

F40-44

3599

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

10694

Females

2938

F40-44

2938

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

11946

Females

3636

F40-44

3636

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

14833

Females

5191

F40-44

5191

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2story building
+22ft-21ft

Overall

15454

Females

5501

F40-44

5501

Passing Analysis

Category:
Athletes Passed
2270
Passed By
1264
Net Change
+1006
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13547
5K → 10K370249+121#13547#13426
10K → 15K47861+417#13426#13009
15K → 20K36749+318#13009#12691
20K → Half845+79#12691#12612
Half → 25K130157-27#12612#12639
25K → 30K198181+17#12639#12622
30K → 20M12381+42#12622#12580
20M → 21M10093+7#12580#12573
21M → 35K8420+64#12573#12509
35K → 23M9968+31#12509#12478
23M → 24M11016+94#12478#12384
24M → 40K6953+16#12384#12368
40K → 25.2M1768-51#12368#12419
25.2M → Finish41163-122#12419#12541
TOTALS22701264+1006
📊

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