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BOSTON MARATHON 2023

Leticia Castillo Zaldivar

Bib: 16346•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 16%
Division (F18-39)
#0 / 4884
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:55
Rank: #6604
Start → 5K
21:55 | 7:03/mi
10K· 6.21 mi
44:22
Rank: #7372 (-768)
5K → 10K
22:27 | 7:14/mi
15K· 9.32 mi
1:07:39
Rank: #8157 (-785)
10K → 15K
23:17 | 7:30/mi
20K· 12.43 mi
1:31:12
Rank: #8547 (-390)
15K → 20K
23:33 | 7:35/mi
Half· 13.11 mi
1:36:24
Rank: #8665 (-118)
20K → Half
5:12 | 7:37/mi
25K· 15.53 mi
1:55:16
Rank: #8983 (-318)
Half → 25K
18:52 | 7:47/mi
30K· 18.64 mi
2:20:16
Rank: #9353 (-370)
25K → 30K
25:00 | 8:03/mi
20M
2:30:56
Rank: #9331 (+22)
30K → 20M
10:40 | 7:51/mi
21M
2:39:35
Rank: #9424 (-93)
20M → 21M
8:39 | 8:39/mi
35K· 21.75 mi
2:45:16
Rank: #9397 (+27)
21M → 35K
5:41 | 7:36/mi
23M
2:55:34
Rank: #9484 (-87)
35K → 23M
10:18 | 8:14/mi
24M
3:03:27
Rank: #9520 (-36)
23M → 24M
7:53 | 7:53/mi
40K· 24.85 mi
3:10:16
Rank: #9486 (+34)
24M → 40K
6:49 | 7:58/mi
25.2M
3:13:12
Rank: #9463 (+23)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:21:12
Rank: #9504 (-41)
25.2M → Finish
8:00 | 7:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:24
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:44:48
Pace8:00 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:11:5721:557:0321:55
7:03
-
10K
6.21 mi11:34:2444:227:0822:27
7:14
+0:11
15K
9.32 mi11:57:411:07:397:1523:17
7:30
+0:16
20K
12.43 mi12:21:141:31:127:2023:33
7:35
+0:05
Half
13.11 mi12:26:261:36:247:215:12
7:37
+0:02
25K
15.53 mi12:45:181:55:167:2518:52
7:47
+0:10
30K
18.64 mi13:10:182:20:167:3125:00
8:03
+0:16
20M
20.00 mi13:20:582:30:567:3310:40
7:51
-0:12
21M
21.00 mi13:29:372:39:357:368:39
8:39
+0:48
35K
21.75 mi13:35:182:45:167:365:41
7:36
-1:03
23M
23.00 mi13:45:362:55:347:3810:18
8:14
+0:38
24M
24.00 mi13:53:293:03:277:397:53
7:53
-0:21
40K
24.85 mi14:00:183:10:167:396:49
7:58
+0:05
25.2M
25.20 mi14:03:143:13:127:402:56
8:30
+0:32
Finish
26.22 mi14:11:143:21:127:418:00
7:51
-0:39

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

7:03 /mi

Average Pace

7:41 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:05

51% of race

Time at Steady Pace

1:17:14

38% of race

Time at Slower Pace

21:53

11% of race

Average Pace: 7:40 /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 mi11:11:5721:557:0321:55
7:03
#6604
10K
6.21 mi11:34:2444:227:0822:27
7:14
#7372
15K
9.32 mi11:57:411:07:397:1523:17
7:30
#8157
20K
12.43 mi12:21:141:31:127:2023:33
7:35
#8547
Half
13.11 mi12:26:261:36:247:215:12
7:37
#8665
25K
15.53 mi12:45:181:55:167:2518:52
7:47
#8983
30K
18.64 mi13:10:182:20:167:3125:00
8:03
#9353
20M
20.00 mi13:20:582:30:567:3310:40
7:51
#9331
21M
21.00 mi13:29:372:39:357:368:39
8:39
#9424
35K
21.75 mi13:35:182:45:167:365:41
7:36
#9397
23M
23.00 mi13:45:362:55:347:3810:18
8:14
#9484
24M
24.00 mi13:53:293:03:277:397:53
7:53
#9520
40K
24.85 mi14:00:183:10:167:396:49
7:58
#9486
25.2M
25.20 mi14:03:143:13:127:402:56
8:30
#9463
Finish
26.22 mi14:11:143:21:127:418:00
7:51
#9504
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi660463063010142(Top 38%)1908(Top 17%)1908(Top 39%)
10K6.21 mi3.10 mi7372-768826-196826-1968314(Top 31%)1152(Top 10%)1152(Top 24%)
15K9.32 mi3.11 mi8157-7851094-2681094-26810142(Top 38%)1908(Top 17%)1908(Top 39%)
20K12.43 mi3.11 mi8547-3901260-1661260-1669953(Top 37%)1893(Top 17%)1893(Top 39%)
Half13.11 mi0.68 mi8665-1181299-391299-3911234(Top 42%)2465(Top 22%)2465(Top 50%)
25K15.53 mi2.42 mi8983-3181439-1401439-14010949(Top 41%)2451(Top 21%)2451(Top 50%)
30K18.64 mi3.11 mi9353-3701631-1921631-19211268(Top 42%)2768(Top 24%)2768(Top 57%)
20M20.00 mi1.36 mi9331+221647-161647-169246(Top 35%)1905(Top 17%)1905(Top 39%)
21M21.00 mi1.00 mi9424-931702-551702-5511356(Top 43%)3054(Top 27%)3054(Top 63%)
35K21.75 mi0.75 mi9397+271710-81710-89288(Top 35%)2041(Top 18%)2041(Top 42%)
23M23.00 mi1.25 mi9484-871759-491759-4911373(Top 43%)3188(Top 28%)3188(Top 65%)
24M24.00 mi1.00 mi9520-361804-451804-4510419(Top 39%)2785(Top 24%)2785(Top 57%)
40K24.85 mi0.85 mi9486+341823-191823-199887(Top 37%)2585(Top 23%)2585(Top 53%)
25.2M25.20 mi0.35 mi9463+231825-21825-29615(Top 36%)2498(Top 22%)2498(Top 51%)
Finish26.22 mi1.02 mi9504-411868-431868-4311053(Top 42%)3218(Top 28%)3218(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10142

Females

1908

F18-39

1908

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8314

Females

1152

F18-39

1152

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10142

Females

1908

F18-39

1908

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9953

Females

1893

F18-39

1893

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

11234

Females

2465

F18-39

2465

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10949

Females

2451

F18-39

2451

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

11268

Females

2768

F18-39

2768

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9246

Females

1905

F18-39

1905

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

11356

Females

3054

F18-39

3054

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9288

Females

2041

F18-39

2041

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

11373

Females

3188

F18-39

3188

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

10419

Females

2785

F18-39

2785

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9887

Females

2585

F18-39

2585

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9615

Females

2498

F18-39

2498

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2stories
+22ft-21ft

Overall

11053

Females

3218

F18-39

3218

Passing Analysis

Category:
Athletes Passed
696*
Passed By
3596
Net Change
-2900
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6604
5K → 10K27795-768#6604#7372
10K → 15K13798-785#7372#8157
15K → 20K49439-390#8157#8547
20K → Half3121-118#8547#8665
Half → 25K33351-318#8665#8983
25K → 30K77447-370#8983#9353
30K → 20M8664+22#9353#9331
20M → 21M64157-93#9331#9424
21M → 35K5932+27#9424#9397
35K → 23M64151-87#9397#9484
23M → 24M5793-36#9484#9520
24M → 40K72*38+34#9520#9486
40K → 25.2M4219+23#9486#9463
25.2M → Finish5091-41#9463#9504
TOTALS696*3596-2900

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

📊

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