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BOSTON MARATHON 2023

Estrella Contreras

Bib: 25707•F

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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

Start
0:00:00
Race begins
5K· 3.11 mi
34:31
Rank: #25825
Start → 5K
34:31 | 11:07/mi
10K· 6.21 mi
1:09:38
Rank: #25822 (+3)
5K → 10K
35:07 | 11:18/mi
15K· 9.32 mi
1:47:22
Rank: #25988 (-166)
10K → 15K
37:44 | 12:09/mi
20K· 12.43 mi
2:27:57
Rank: #26094 (-106)
15K → 20K
40:35 | 13:04/mi
Half· 13.11 mi
2:36:52
Rank: #26123 (-29)
20K → Half
8:55 | 13:04/mi
25K· 15.53 mi
3:10:00
Rank: #26161 (-38)
Half → 25K
33:08 | 13:40/mi
30K· 18.64 mi
3:53:26
Rank: #26148 (+13)
25K → 30K
43:26 | 13:59/mi
20M
4:12:11
Rank: #26130 (+18)
30K → 20M
18:45 | 13:48/mi
21M
4:27:31
Rank: #26123 (+7)
20M → 21M
15:20 | 15:20/mi
35K· 21.75 mi
4:36:46
Rank: #26100 (+23)
21M → 35K
9:15 | 12:22/mi
23M
4:53:41
Rank: #26080 (+20)
35K → 23M
16:55 | 13:31/mi
24M
5:06:40
Rank: #26073 (+7)
23M → 24M
12:59 | 12:59/mi
40K· 24.85 mi
5:18:00
Rank: #26040 (+33)
24M → 40K
11:20 | 13:15/mi
25.2M
5:23:06
Rank: #26042 (-2)
40K → 25.2M
5:06 | 14:47/mi
Finish· 26.22 mi
5:35:56
Rank: #26045 (-3)
25.2M → Finish
12:50 | 12:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:36:52
Pace11:58 /mi
2nd Half
Distance13.11 mi
Time2:59:04
Pace13:40 /mi
📊Positive Split: 14.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:3934:3111:0734:31
11:07
-
10K
6.21 mi12:27:461:09:3811:1235:07
11:18
+0:11
15K
9.32 mi13:05:301:47:2211:3137:44
12:09
+0:51
20K
12.43 mi13:46:052:27:5711:5440:35
13:04
+0:55
Half
13.11 mi13:55:002:36:5211:588:55
13:04
0:00
25K
15.53 mi14:28:083:10:0012:1433:08
13:40
+0:36
30K
18.64 mi15:11:343:53:2612:3143:26
13:59
+0:19
20M
20.00 mi15:30:194:12:1112:3718:45
13:48
-0:11
21M
21.00 mi15:45:394:27:3112:4415:20
15:20
+1:32
35K
21.75 mi15:54:544:36:4612:449:15
12:22
-2:58
23M
23.00 mi16:11:494:53:4112:4616:55
13:31
+1:09
24M
24.00 mi16:24:485:06:4012:4712:59
12:59
-0:32
40K
24.85 mi16:36:085:18:0012:4811:20
13:15
+0:16
25.2M
25.20 mi16:41:145:23:0612:495:06
14:47
+1:32
Finish
26.22 mi16:54:045:35:5612:4912:50
12:36
-2:11

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

11:07 /mi

Average Pace

12:49 /mi

Slowest Pace

15:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:37

35% of race

Time at Steady Pace

1:43:34

31% of race

Time at Slower Pace

1:55:45

34% of race

Average Pace: 12:49 /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 mi11:52:3934:3111:0734:31
11:07
#25825
10K
6.21 mi12:27:461:09:3811:1235:07
11:18
#25822
15K
9.32 mi13:05:301:47:2211:3137:44
12:09
#25988
20K
12.43 mi13:46:052:27:5711:5440:35
13:04
#26094
Half
13.11 mi13:55:002:36:5211:588:55
13:04
#26123
25K
15.53 mi14:28:083:10:0012:1433:08
13:40
#26161
30K
18.64 mi15:11:343:53:2612:3143:26
13:59
#26148
20M
20.00 mi15:30:194:12:1112:3718:45
13:48
#26130
21M
21.00 mi15:45:394:27:3112:4415:20
15:20
#26123
35K
21.75 mi15:54:544:36:4612:449:15
12:22
#26100
23M
23.00 mi16:11:494:53:4112:4616:55
13:31
#26080
24M
24.00 mi16:24:485:06:4012:4712:59
12:59
#26073
40K
24.85 mi16:36:085:18:0012:4811:20
13:15
#26040
25.2M
25.20 mi16:41:145:23:0612:495:06
14:47
#26042
Finish
26.22 mi16:54:045:35:5612:4912:50
12:36
#26045
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25825109381093826150(Top 98%)11132(Top 97%)11132(Top 228%)
10K6.21 mi3.10 mi25822+310934+410934+425793(Top 97%)10906(Top 95%)10906(Top 223%)
15K9.32 mi3.11 mi25988-16611032-9811032-9826150(Top 98%)11132(Top 97%)11132(Top 228%)
20K12.43 mi3.11 mi26094-10611101-6911101-6926262(Top 99%)11210(Top 98%)11210(Top 230%)
Half13.11 mi0.68 mi26123-2911116-1511116-1526376(Top 99%)11290(Top 99%)11290(Top 231%)
25K15.53 mi2.42 mi26161-3811144-2811144-2826200(Top 98%)11188(Top 98%)11188(Top 229%)
30K18.64 mi3.11 mi26148+1311145-111145-126024(Top 98%)11111(Top 97%)11111(Top 227%)
20M20.00 mi1.36 mi26130+1811137+811137+825723(Top 97%)10973(Top 96%)10973(Top 225%)
21M21.00 mi1.00 mi26123+711134+311134+325918(Top 97%)11061(Top 97%)11061(Top 226%)
35K21.75 mi0.75 mi26100+2311126+811126+825051(Top 94%)10682(Top 94%)10682(Top 219%)
23M23.00 mi1.25 mi26080+2011116+1011116+1025511(Top 96%)10906(Top 95%)10906(Top 223%)
24M24.00 mi1.00 mi26073+7111161111625464(Top 96%)10911(Top 96%)10911(Top 223%)
40K24.85 mi0.85 mi26040+3311094+2211094+2225161(Top 95%)10762(Top 94%)10762(Top 220%)
25.2M25.20 mi0.35 mi26042-211098-411098-425591(Top 96%)10974(Top 96%)10974(Top 225%)
Finish26.22 mi1.02 mi26045-311103-511103-525737(Top 97%)11044(Top 97%)11044(Top 226%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21stories
+97ft-345ft

Overall

26150

Females

11132

F18-39

11132

5K→10K

3.1 - 6.2 mi

Top 97%
×5stories
+79ft-138ft

Overall

25793

Females

10906

F18-39

10906

10K→15K

6.2 - 9.3 mi

Top 98%
×3stories
+67ft-78ft

Overall

26150

Females

11132

F18-39

11132

15K→20K

9.3 - 12.4 mi

Top 99%
×5stories
+106ft-86ft

Overall

26262

Females

11210

F18-39

11210

20K→Half

12.4 - 13.1 mi

Top 99%
×2stories
+19ft-37ft

Overall

26376

Females

11290

F18-39

11290

Half→25K

13.1 - 15.5 mi

Top 98%
×4stories
+66ft-88ft

Overall

26200

Females

11188

F18-39

11188

25K→30K

15.5 - 18.6 mi

Top 98%
×9stories
+181ft-148ft

Overall

26024

Females

11111

F18-39

11111

30K→20M

18.6 - 20.0 mi

Top 97%
×5stories
+64ft-50ft

Overall

25723

Females

10973

F18-39

10973

20M→21M

20.0 - 21.0 mi

Top 97%
×8stories
+106ft-24ft

Overall

25918

Females

11061

F18-39

11061

21M→35K

21.0 - 21.8 mi

Top 94%
×7stories
+17ft-86ft

Overall

25051

Females

10682

F18-39

10682

35K→23M

21.8 - 23.0 mi

Top 96%
×5stories
+23ft-63ft

Overall

25511

Females

10906

F18-39

10906

23M→24M

23.0 - 24.0 mi

Top 96%
×6stories
+12ft-82ft

Overall

25464

Females

10911

F18-39

10911

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

25161

Females

10762

F18-39

10762

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

25591

Females

10974

F18-39

10974

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2stories
+22ft-21ft

Overall

25737

Females

11044

F18-39

11044

Passing Analysis

Category:
Athletes Passed
393
Passed By
613
Net Change
-220
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25825
5K → 10K111108+3#25825#25822
10K → 15K24190-166#25822#25988
15K → 20K16122-106#25988#26094
20K → Half029-29#26094#26123
Half → 25K2159-38#26123#26161
25K → 30K5037+13#26161#26148
30K → 20M279+18#26148#26130
20M → 21M2013+7#26130#26123
21M → 35K252+23#26123#26100
35K → 23M299+20#26100#26080
23M → 24M169+7#26080#26073
24M → 40K374+33#26073#26040
40K → 25.2M35-2#26040#26042
25.2M → Finish1417-3#26042#26045
TOTALS393613-220
📊

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