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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Renata Castro

Bib: 21229 •F •Age: N/A

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Top 43%
Masters (Masters Women)
#0 / 6862
Top 29%
Age Group (F45-49)
#0 / 1786
Top 35%
Race Day Weather
51°/41°F
overcast clouds
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  • Segment-by-segment breakdown
  • Personalized race insights
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Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
24:36
3.11 mi
Rank: #16336
Start → 5K
24:36 | 7:56/mi
10K
48:54
6.21 mi
Rank: #16058 (+278)
5K → 10K
24:18 | 7:50/mi
15K
1:13:21
9.32 mi
Rank: #16007 (+51)
10K → 15K
24:27 | 7:53/mi
20K
1:38:18
12.43 mi
Rank: #16099 (-92)
15K → 20K
24:57 | 8:02/mi
HALF
1:43:45
13.11 mi
Rank: #16153 (-54)
20K → HALF
5:27 | 8:00/mi
25K
2:03:43
15.53 mi
Rank: #16293 (-140)
HALF → 25K
19:58 | 8:14/mi
30K
2:29:52
18.64 mi
Rank: #16275 (+18)
25K → 30K
26:09 | 8:26/mi
20M
2:41:23
20.00 mi
Rank: #16243 (+32)
30K → 20M
11:31 | 8:29/mi
21M
2:50:24
21.00 mi
Rank: #16208 (+35)
20M → 21M
9:01 | 9:01/mi
35K
2:56:29
21.75 mi
Rank: #16155 (+53)
21M → 35K
6:05 | 8:08/mi
23M
3:07:08
23.00 mi
Rank: #16103 (+52)
35K → 23M
10:39 | 8:31/mi
24M
3:15:07
24.00 mi
Rank: #15985 (+118)
23M → 24M
7:59 | 7:59/mi
40K
3:21:58
24.85 mi
Rank: #15856 (+129)
24M → 40K
6:51 | 8:01/mi
25.2M
3:25:01
25.20 mi
Rank: #15813 (+43)
40K → 25.2M
3:03 | 8:51/mi
FINISH
3:33:19
26.22 mi
Rank: #15805 (+8)
25.2M → FINISH
8:18 | 8:09/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:43:45
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time1:49:34
Pace8:22 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:11:1324:367:5624:36
7:56
-
10K
6.21 mi11:35:3148:547:5324:18
7:50
-0:06
15K
9.32 mi11:59:581:13:217:5324:27
7:53
+0:03
20K
12.43 mi12:24:551:38:187:5524:57
8:02
+0:09
HALF
13.11 mi12:30:221:43:457:555:27
8:00
-0:02
25K
15.53 mi12:50:202:03:437:5819:58
8:14
+0:14
30K
18.64 mi13:16:292:29:528:0326:09
8:26
+0:12
20M
20.00 mi13:28:002:41:238:0511:31
8:29
+0:03
21M
21.00 mi13:37:012:50:248:079:01
9:01
+0:32
35K
21.75 mi13:43:062:56:298:076:05
8:08
-0:53
23M
23.00 mi13:53:453:07:088:0910:39
8:31
+0:23
24M
24.00 mi14:01:443:15:078:087:59
7:59
-0:32
40K
24.85 mi14:08:353:21:588:086:51
8:01
+0:02
25.2M
25.20 mi14:11:383:25:018:093:03
8:51
+0:50
FINISH
26.22 mi14:19:563:33:198:098:18
8:09
-0:42

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

7:50 /mi

Average Pace

8:09 /mi

Slowest Pace

9:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

3:21:15

94% of race

Time at Steady Pace

12:04

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:08 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:11:1324:367:5624:36
7:56
#16336
10K
6.21 mi11:35:3148:547:5324:18
7:50
#16058
15K
9.32 mi11:59:581:13:217:5324:27
7:53
#16007
20K
12.43 mi12:24:551:38:187:5524:57
8:02
#16099
HALF
13.11 mi12:30:221:43:457:555:27
8:00
#16153
25K
15.53 mi12:50:202:03:437:5819:58
8:14
#16293
30K
18.64 mi13:16:292:29:528:0326:09
8:26
#16275
20M
20.00 mi13:28:002:41:238:0511:31
8:29
#16243
21M
21.00 mi13:37:012:50:248:079:01
9:01
#16208
35K
21.75 mi13:43:062:56:298:076:05
8:08
#16155
23M
23.00 mi13:53:453:07:088:0910:39
8:31
#16103
24M
24.00 mi14:01:443:15:078:087:59
7:59
#15985
40K
24.85 mi14:08:353:21:588:086:51
8:01
#15856
25.2M
25.20 mi14:11:383:25:018:093:03
8:51
#15813
FINISH
26.22 mi14:19:563:33:198:098:18
8:09
#15805
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi163365525552515940(Top 55%)5314(Top 42%)5314(Top 298%)
10K6.21 mi3.10 mi16058+2785372+1535372+15315845(Top 55%)5218(Top 41%)5218(Top 292%)
15K9.32 mi3.11 mi16007+515335+375335+3715940(Top 55%)5314(Top 42%)5314(Top 298%)
20K12.43 mi3.11 mi16099-925409-745409-7416347(Top 56%)5578(Top 44%)5578(Top 312%)
HALF13.11 mi0.68 mi16153-545445-365445-3617102(Top 59%)5961(Top 47%)5961(Top 334%)
25K15.53 mi2.42 mi16293-1405541-965541-9617012(Top 59%)5985(Top 48%)5985(Top 335%)
30K18.64 mi3.11 mi16275+185568-275568-2716367(Top 56%)5729(Top 46%)5729(Top 321%)
20M20.00 mi1.36 mi16243+325567+15567+116089(Top 55%)5691(Top 45%)5691(Top 319%)
21M21.00 mi1.00 mi16208+355569-25569-216234(Top 56%)5819(Top 46%)5819(Top 326%)
35K21.75 mi0.75 mi16155+535555+145555+1415397(Top 53%)5405(Top 43%)5405(Top 303%)
23M23.00 mi1.25 mi16103+525542+135542+1315791(Top 54%)5722(Top 45%)5722(Top 320%)
24M24.00 mi1.00 mi15985+1185492+505492+5013698(Top 47%)4628(Top 37%)4628(Top 259%)
40K24.85 mi0.85 mi15856+1295437+555437+5512627(Top 44%)4142(Top 33%)4142(Top 232%)
25.2M25.20 mi0.35 mi15813+435416+215416+2113867(Top 48%)4842(Top 38%)4842(Top 271%)
FINISH26.22 mi1.02 mi15805+85433-175433-1716094(Top 55%)5993(Top 48%)5993(Top 336%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21
+97ft-345ft

Overall

15940

Females

5314

F45-49

5314

5K→10K

3.1 - 6.2 mi

Top 55%
×5
+79ft-138ft

Overall

15845

Females

5218

F45-49

5218

10K→15K

6.2 - 9.3 mi

Top 55%
×3
+67ft-78ft

Overall

15940

Females

5314

F45-49

5314

15K→20K

9.3 - 12.4 mi

Top 56%
×5
+106ft-86ft

Overall

16347

Females

5578

F45-49

5578

20K→HALF

12.4 - 13.1 mi

Top 59%
×2
+19ft-37ft

Overall

17102

Females

5961

F45-49

5961

HALF→25K

13.1 - 15.5 mi

Top 59%
×4
+66ft-88ft

Overall

17012

Females

5985

F45-49

5985

25K→30K

15.5 - 18.6 mi

Top 56%
×9
+181ft-148ft

Overall

16367

Females

5729

F45-49

5729

30K→20M

18.6 - 20.0 mi

Top 55%
×5
+64ft-50ft

Overall

16089

Females

5691

F45-49

5691

20M→21M

20.0 - 21.0 mi

Top 56%
×8
+106ft-24ft

Overall

16234

Females

5819

F45-49

5819

21M→35K

21.0 - 21.8 mi

Top 53%
×7
+17ft-86ft

Overall

15397

Females

5405

F45-49

5405

35K→23M

21.8 - 23.0 mi

Top 54%
×5
+23ft-63ft

Overall

15791

Females

5722

F45-49

5722

23M→24M

23.0 - 24.0 mi

Top 47%
×6
+12ft-82ft

Overall

13698

Females

4628

F45-49

4628

24M→40K

24.0 - 24.9 mi

Top 44%
×1
+6ft-20ft

Overall

12627

Females

4142

F45-49

4142

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1
+13ft-16ft

Overall

13867

Females

4842

F45-49

4842

25.2M→FINISH

25.2 - 26.2 mi

Top 55%
×2
+22ft-21ft

Overall

16094

Females

5993

F45-49

5993

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1947*
Passed By
1324
Net Change
+531
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16336
5K → 10K440*162+278#16336#16058
10K → 15K223*172+51#16058#16007
15K → 20K150200-92#16007#16099
20K → HALF2074-54#16099#16153
HALF → 25K110200-140#16153#16293
25K → 30K203*185+18#16293#16275
30K → 20M10674+32#16275#16243
20M → 21M10469+35#16243#16208
21M → 35K8330+53#16208#16155
35K → 23M12573+52#16155#16103
23M → 24M13113+118#16103#15985
24M → 40K13910+129#15985#15856
40K → 25.2M5310+43#15856#15813
25.2M → FINISH6052+8#15813#15805
TOTALS1947*1324+531

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

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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