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BOSTON MARATHON 2023

Alejandra Roman Zamudio

Bib: 8452•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 37%
Gender (Female)
#0 / 11423
Top 18%
Division (F18-39)
#0 / 4884
Top 31%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:20
Rank: #5304
Start → 5K
21:20 | 6:52/mi
10K· 6.21 mi
42:40
Rank: #5568 (-264)
5K → 10K
21:20 | 6:52/mi
15K· 9.32 mi
1:04:54
Rank: #6278 (-710)
10K → 15K
22:14 | 7:09/mi
20K· 12.43 mi
1:28:02
Rank: #6833 (-555)
15K → 20K
23:08 | 7:27/mi
Half· 13.11 mi
1:33:08
Rank: #6969 (-136)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:51:46
Rank: #7342 (-373)
Half → 25K
18:38 | 7:41/mi
30K· 18.64 mi
2:16:52
Rank: #7960 (-618)
25K → 30K
25:06 | 8:05/mi
20M
2:27:44
Rank: #8071 (-111)
30K → 20M
10:52 | 8:00/mi
21M
2:36:40
Rank: #8347 (-276)
20M → 21M
8:56 | 8:56/mi
35K· 21.75 mi
2:42:42
Rank: #8491 (-144)
21M → 35K
6:02 | 8:04/mi
23M
2:53:33
Rank: #8824 (-333)
35K → 23M
10:51 | 8:40/mi
24M
3:02:04
Rank: #9067 (-243)
23M → 24M
8:31 | 8:31/mi
40K· 24.85 mi
3:09:39
Rank: #9295 (-228)
24M → 40K
7:35 | 8:52/mi
25.2M
3:13:02
Rank: #9409 (-114)
40K → 25.2M
3:23 | 9:49/mi
Finish· 26.22 mi
3:22:15
Rank: #9814 (-405)
25.2M → Finish
9:13 | 9:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:08
Pace7:06 /mi
2nd Half
Distance13.11 mi
Time1:49:07
Pace8:19 /mi
📊Positive Split: 17.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:3321:206:5221:20
6:52
-
10K
6.21 mi11:07:5342:406:5221:20
6:52
0:00
15K
9.32 mi11:30:071:04:546:5822:14
7:09
+0:17
20K
12.43 mi11:53:151:28:027:0523:08
7:27
+0:18
Half
13.11 mi11:58:211:33:087:065:06
7:29
+0:02
25K
15.53 mi12:16:591:51:467:1218:38
7:41
+0:12
30K
18.64 mi12:42:052:16:527:2125:06
8:05
+0:24
20M
20.00 mi12:52:572:27:447:2310:52
8:00
-0:05
21M
21.00 mi13:01:532:36:407:288:56
8:56
+0:56
35K
21.75 mi13:07:552:42:427:296:02
8:04
-0:52
23M
23.00 mi13:18:462:53:337:3310:51
8:40
+0:36
24M
24.00 mi13:27:173:02:047:358:31
8:31
-0:09
40K
24.85 mi13:34:523:09:397:387:35
8:52
+0:21
25.2M
25.20 mi13:38:153:13:027:403:23
9:49
+0:57
Finish
26.22 mi13:47:283:22:157:439:13
9:03
-0:46

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

6:52 /mi

Average Pace

7:43 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:08

46% of race

Time at Steady Pace

1:00:38

30% of race

Time at Slower Pace

48:29

24% of race

Average Pace: 7:43 /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 mi10:46:3321:206:5221:20
6:52
#5304
10K
6.21 mi11:07:5342:406:5221:20
6:52
#5568
15K
9.32 mi11:30:071:04:546:5822:14
7:09
#6278
20K
12.43 mi11:53:151:28:027:0523:08
7:27
#6833
Half
13.11 mi11:58:211:33:087:065:06
7:29
#6969
25K
15.53 mi12:16:591:51:467:1218:38
7:41
#7342
30K
18.64 mi12:42:052:16:527:2125:06
8:05
#7960
20M
20.00 mi12:52:572:27:447:2310:52
8:00
#8071
21M
21.00 mi13:01:532:36:407:288:56
8:56
#8347
35K
21.75 mi13:07:552:42:427:296:02
8:04
#8491
23M
23.00 mi13:18:462:53:337:3310:51
8:40
#8824
24M
24.00 mi13:27:173:02:047:358:31
8:31
#9067
40K
24.85 mi13:34:523:09:397:387:35
8:52
#9295
25.2M
25.20 mi13:38:153:13:027:403:23
9:49
#9409
Finish
26.22 mi13:47:283:22:157:439:13
9:03
#9814
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi53043963967517(Top 28%)902(Top 8%)902(Top 18%)
10K6.21 mi3.10 mi5568-264432-36432-365900(Top 22%)513(Top 4%)513(Top 11%)
15K9.32 mi3.11 mi6278-710577-145577-1457517(Top 28%)902(Top 8%)902(Top 18%)
20K12.43 mi3.11 mi6833-555697-120697-1208892(Top 33%)1447(Top 13%)1447(Top 30%)
Half13.11 mi0.68 mi6969-136735-38735-3810090(Top 38%)1926(Top 17%)1926(Top 39%)
25K15.53 mi2.42 mi7342-373847-112847-11210204(Top 38%)2087(Top 18%)2087(Top 43%)
30K18.64 mi3.11 mi7960-6181100-2531100-25311514(Top 43%)2903(Top 25%)2903(Top 59%)
20M20.00 mi1.36 mi8071-1111160-601160-6010249(Top 38%)2342(Top 21%)2342(Top 48%)
21M21.00 mi1.00 mi8347-2761286-1261286-12613029(Top 49%)3950(Top 35%)3950(Top 81%)
35K21.75 mi0.75 mi8491-1441347-611347-6112576(Top 47%)3737(Top 33%)3737(Top 77%)
23M23.00 mi1.25 mi8824-3331501-1541501-15414173(Top 53%)4703(Top 41%)4703(Top 96%)
24M24.00 mi1.00 mi9067-2431619-1181619-11814563(Top 55%)4985(Top 44%)4985(Top 102%)
40K24.85 mi0.85 mi9295-2281744-1251744-12515458(Top 58%)5552(Top 49%)5552(Top 114%)
25.2M25.20 mi0.35 mi9409-1141805-611805-6116579(Top 62%)6168(Top 54%)6168(Top 126%)
Finish26.22 mi1.02 mi9814-4052015-2102015-21018182(Top 68%)6989(Top 61%)6989(Top 143%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

7517

Females

902

F18-39

902

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

5900

Females

513

F18-39

513

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

7517

Females

902

F18-39

902

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

8892

Females

1447

F18-39

1447

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10090

Females

1926

F18-39

1926

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10204

Females

2087

F18-39

2087

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11514

Females

2903

F18-39

2903

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10249

Females

2342

F18-39

2342

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

13029

Females

3950

F18-39

3950

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

12576

Females

3737

F18-39

3737

35K→23M

21.8 - 23.0 mi

Top 53%
×5stories
+23ft-63ft

Overall

14173

Females

4703

F18-39

4703

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

14563

Females

4985

F18-39

4985

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15458

Females

5552

F18-39

5552

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16579

Females

6168

F18-39

6168

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2stories
+22ft-21ft

Overall

18182

Females

6989

F18-39

6989

Passing Analysis

Category:
Athletes Passed
339
Passed By
4849
Net Change
-4510
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5304
5K → 10K107371-264#5304#5568
10K → 15K10720-710#5568#6278
15K → 20K17572-555#6278#6833
20K → Half2138-136#6833#6969
Half → 25K17390-373#6969#7342
25K → 30K26644-618#7342#7960
30K → 20M55166-111#7960#8071
20M → 21M14290-276#8071#8347
21M → 35K14158-144#8347#8491
35K → 23M23356-333#8491#8824
23M → 24M23266-243#8824#9067
24M → 40K16244-228#9067#9295
40K → 25.2M10124-114#9295#9409
25.2M → Finish5410-405#9409#9814
TOTALS3394849-4510
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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