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BOSTON MARATHON 2023

Marcia Pereira

Bib: 14957•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 30%
Gender (Female)
#0 / 11423
Top 11%
Masters (Masters Women)
#0 / 6539
Top 4%
Division (F50-54)
#0 / 1207
Top 1%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:44
Rank: #10918
Start → 5K
7:38/mi
23:44 split
10K· 6.21 mi
47:19
Rank: #11052 (-134)
5K → 10K
7:35/mi
23:35 split
15K· 9.32 mi
1:10:45
Rank: #10849 (+203)
10K → 15K
7:33/mi
23:26 split
20K· 12.43 mi
1:34:03
Rank: #10417 (+432)
15K → 20K
7:30/mi
23:18 split
Half· 13.11 mi
1:39:03
Rank: #10326 (+91)
20K → Half
7:20/mi
5:00 split
25K· 15.53 mi
1:57:05
Rank: #9943 (+383)
Half → 25K
7:26/mi
18:02 split
30K· 18.64 mi
2:20:19
Rank: #9373 (+570)
25K → 30K
7:29/mi
23:14 split
20M
2:30:32
Rank: #9166 (+207)
30K → 20M
7:31/mi
10:13 split
21M
2:38:16
Rank: #8939 (+227)
20M → 21M
7:44/mi
7:44 split
35K· 21.75 mi
2:43:40
Rank: #8835 (+104)
21M → 35K
7:13/mi
5:24 split
23M
2:52:47
Rank: #8559 (+276)
35K → 23M
7:17/mi
9:07 split
24M
2:59:53
Rank: #8367 (+192)
23M → 24M
7:06/mi
7:06 split
40K· 24.85 mi
3:06:02
Rank: #8201 (+166)
24M → 40K
7:12/mi
6:09 split
25.2M
3:08:42
Rank: #8130 (+71)
40K → 25.2M
7:44/mi
2:40 split
Finish· 26.22 mi
3:15:43
Rank: #7933 (+197)
25.2M → Finish
6:53/mi
7:01 split

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:39:03
Pace7:33 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:40
Pace7:22 /mi
📊Negative Split: 2.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1323:447:3823:44
7:38
-
10K
6.21 mi11:16:4847:197:3723:35
7:35
-0:03
15K
9.32 mi11:40:141:10:457:3523:26
7:33
-0:02
20K
12.43 mi12:03:321:34:037:3423:18
7:30
-0:03
Half
13.11 mi12:08:321:39:037:335:00
7:20
-0:10
25K
15.53 mi12:26:341:57:057:3218:02
7:26
+0:06
30K
18.64 mi12:49:482:20:197:3223:14
7:29
+0:03
20M
20.00 mi13:00:012:30:327:3210:13
7:31
+0:02
21M
21.00 mi13:07:452:38:167:327:44
7:44
+0:13
35K
21.75 mi13:13:092:43:407:325:24
7:13
-0:31
23M
23.00 mi13:22:162:52:477:319:07
7:17
+0:04
24M
24.00 mi13:29:222:59:537:307:06
7:06
-0:11
40K
24.85 mi13:35:313:06:027:296:09
7:12
+0:06
25.2M
25.20 mi13:38:113:08:427:292:40
7:44
+0:32
Finish
26.22 mi13:45:123:15:437:287:01
6:53
-0:51

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

6:53 /mi

Average Pace

7:28 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:00

71% of race

Time at Steady Pace

57:43

29% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:28 /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 mi10:53:1323:447:3823:44
7:38
#10918
10K
6.21 mi11:16:4847:197:3723:35
7:35
#11052
15K
9.32 mi11:40:141:10:457:3523:26
7:33
#10849
20K
12.43 mi12:03:321:34:037:3423:18
7:30
#10417
Half
13.11 mi12:08:321:39:037:335:00
7:20
#10326
25K
15.53 mi12:26:341:57:057:3218:02
7:26
#9943
30K
18.64 mi12:49:482:20:197:3223:14
7:29
#9373
20M
20.00 mi13:00:012:30:327:3210:13
7:31
#9166
21M
21.00 mi13:07:452:38:167:327:44
7:44
#8939
35K
21.75 mi13:13:092:43:407:325:24
7:13
#8835
23M
23.00 mi13:22:162:52:477:319:07
7:17
#8559
24M
24.00 mi13:29:222:59:537:307:06
7:06
#8367
40K
24.85 mi13:35:313:06:027:296:09
7:12
#8201
25.2M
25.20 mi13:38:113:08:427:292:40
7:44
#8130
Finish
26.22 mi13:45:123:15:437:287:01
6:53
#7933
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi109182284228410525(Top 40%)2088(Top 18%)2088(Top 173%)
10K6.21 mi3.10 mi11052-1342351-672351-6711238(Top 42%)2450(Top 21%)2450(Top 203%)
15K9.32 mi3.11 mi10849+2032259+922259+9210525(Top 40%)2088(Top 18%)2088(Top 173%)
20K12.43 mi3.11 mi10417+4322032+2272032+2279305(Top 35%)1597(Top 14%)1597(Top 132%)
Half13.11 mi0.68 mi10326+911988+441988+448865(Top 33%)1415(Top 12%)1415(Top 117%)
25K15.53 mi2.42 mi9943+3831826+1621826+1628327(Top 31%)1300(Top 11%)1300(Top 108%)
30K18.64 mi3.11 mi9373+5701639+1871639+1877082(Top 27%)952(Top 8%)952(Top 79%)
20M20.00 mi1.36 mi9166+2071573+661573+666939(Top 26%)1007(Top 9%)1007(Top 83%)
21M21.00 mi1.00 mi8939+2271501+721501+725844(Top 22%)764(Top 7%)764(Top 63%)
35K21.75 mi0.75 mi8835+1041469+321469+326685(Top 25%)987(Top 9%)987(Top 82%)
23M23.00 mi1.25 mi8559+2761393+761393+765248(Top 20%)607(Top 5%)607(Top 50%)
24M24.00 mi1.00 mi8367+1921338+551338+555235(Top 20%)644(Top 6%)644(Top 53%)
40K24.85 mi0.85 mi8201+1661302+361302+364893(Top 18%)623(Top 5%)623(Top 52%)
25.2M25.20 mi0.35 mi8130+711282+201282+205138(Top 19%)783(Top 7%)783(Top 65%)
Finish26.22 mi1.02 mi7933+1971233+491233+494586(Top 17%)606(Top 5%)606(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

10525

Females

2088

F50-54

2088

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11238

Females

2450

F50-54

2450

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

10525

Females

2088

F50-54

2088

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9305

Females

1597

F50-54

1597

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

8865

Females

1415

F50-54

1415

Half→25K

13.1 - 15.5 mi

Top 31%
×4story building
+66ft-88ft

Overall

8327

Females

1300

F50-54

1300

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7082

Females

952

F50-54

952

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

6939

Females

1007

F50-54

1007

20M→21M

20.0 - 21.0 mi

Top 22%
×8story building
+106ft-24ft

Overall

5844

Females

764

F50-54

764

21M→35K

21.0 - 21.8 mi

Top 25%
×7story building
+17ft-86ft

Overall

6685

Females

987

F50-54

987

35K→23M

21.8 - 23.0 mi

Top 20%
×5story building
+23ft-63ft

Overall

5248

Females

607

F50-54

607

23M→24M

23.0 - 24.0 mi

Top 20%
×6story building
+12ft-82ft

Overall

5235

Females

644

F50-54

644

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4893

Females

623

F50-54

623

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5138

Females

783

F50-54

783

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2story building
+22ft-21ft

Overall

4586

Females

606

F50-54

606

Passing Analysis

Category:
Athletes Passed
3518*
Passed By
533
Net Change
+2985
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10918
5K → 10K240374-134#10918#11052
10K → 15K29895+203#11052#10849
15K → 20K45119+432#10849#10417
20K → Half954+91#10417#10326
Half → 25K393*10+383#10326#9943
25K → 30K573*3+570#9943#9373
30K → 20M2158+207#9373#9166
20M → 21M2281+227#9166#8939
21M → 35K1106+104#8939#8835
35K → 23M2760+276#8835#8559
23M → 24M1942+192#8559#8367
24M → 40K1704+166#8367#8201
40K → 25.2M743+71#8201#8130
25.2M → Finish2014+197#8130#7933
TOTALS3518*533+2985

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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