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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Sandra Luiza Rodrigues Belchior

Bib: 20643 •F •Age: N/A

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 42%
Gender (Female)
#0 / 12578
Top 27%
Masters (Masters Women)
#0 / 6862
Top 12%
Age Group (F45-49)
#0 / 1786
Top 12%
Race Day Weather
51°/41°F
overcast clouds

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
24:01
3.11 mi
Rank: #14826
Start → 5K
24:01 | 7:44/mi
10K
47:41
6.21 mi
Rank: #14375 (+451)
5K → 10K
23:40 | 7:38/mi
15K
1:11:10
9.32 mi
Rank: #13957 (+418)
10K → 15K
23:29 | 7:34/mi
20K
1:35:11
12.43 mi
Rank: #13950 (+7)
15K → 20K
24:01 | 7:44/mi
HALF
1:40:19
13.11 mi
Rank: #13897 (+53)
20K → HALF
5:08 | 7:32/mi
25K
1:59:00
15.53 mi
Rank: #13737 (+160)
HALF → 25K
18:41 | 7:43/mi
30K
2:23:22
18.64 mi
Rank: #13459 (+278)
25K → 30K
24:22 | 7:51/mi
20M
2:34:03
20.00 mi
Rank: #13306 (+153)
30K → 20M
10:41 | 7:52/mi
21M
2:42:15
21.00 mi
Rank: #13166 (+140)
20M → 21M
8:12 | 8:12/mi
35K
2:47:53
21.75 mi
Rank: #13074 (+92)
21M → 35K
5:38 | 7:32/mi
23M
2:57:24
23.00 mi
Rank: #12834 (+240)
35K → 23M
9:31 | 7:37/mi
24M
3:04:47
24.00 mi
Rank: #12669 (+165)
23M → 24M
7:23 | 7:23/mi
40K
3:11:12
24.85 mi
Rank: #12512 (+157)
24M → 40K
6:25 | 7:31/mi
25.2M
3:14:01
25.20 mi
Rank: #12442 (+70)
40K → 25.2M
2:49 | 8:11/mi
FINISH
3:21:25
26.22 mi
Rank: #12297 (+145)
25.2M → FINISH
7:24 | 7:16/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half⚖️ Balanced
via HALF
Distance13.11 mi
Time1:40:19
Pace7:40 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:41:06
Pace7:43 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:09:0624:017:4424:01
7:44
-
10K
6.21 mi11:32:4647:417:4123:40
7:38
-0:06
15K
9.32 mi11:56:151:11:107:3923:29
7:34
-0:04
20K
12.43 mi12:20:161:35:117:4024:01
7:44
+0:10
HALF
13.11 mi12:25:241:40:197:405:08
7:32
-0:12
25K
15.53 mi12:44:051:59:007:4018:41
7:43
+0:11
30K
18.64 mi13:08:272:23:227:4224:22
7:51
+0:08
20M
20.00 mi13:19:082:34:037:4310:41
7:52
+0:01
21M
21.00 mi13:27:202:42:157:448:12
8:12
+0:20
35K
21.75 mi13:32:582:47:537:445:38
7:32
-0:40
23M
23.00 mi13:42:292:57:247:439:31
7:37
+0:05
24M
24.00 mi13:49:523:04:477:427:23
7:23
-0:14
40K
24.85 mi13:56:173:11:127:426:25
7:31
+0:08
25.2M
25.20 mi13:59:063:14:017:422:49
8:11
+0:40
FINISH
26.22 mi14:06:303:21:257:427:24
7:16
-0:55

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

7:16 /mi

Average Pace

7:41 /mi

Slowest Pace

8:12 /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

3:10:24

95% of race

Time at Steady Pace

11:01

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:41 /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 mi11:09:0624:017:4424:01
7:44
#14826
10K
6.21 mi11:32:4647:417:4123:40
7:38
#14375
15K
9.32 mi11:56:151:11:107:3923:29
7:34
#13957
20K
12.43 mi12:20:161:35:117:4024:01
7:44
#13950
HALF
13.11 mi12:25:241:40:197:405:08
7:32
#13897
25K
15.53 mi12:44:051:59:007:4018:41
7:43
#13737
30K
18.64 mi13:08:272:23:227:4224:22
7:51
#13459
20M
20.00 mi13:19:082:34:037:4310:41
7:52
#13306
21M
21.00 mi13:27:202:42:157:448:12
8:12
#13166
35K
21.75 mi13:32:582:47:537:445:38
7:32
#13074
23M
23.00 mi13:42:292:57:247:439:31
7:37
#12834
24M
24.00 mi13:49:523:04:477:427:23
7:23
#12669
40K
24.85 mi13:56:173:11:127:426:25
7:31
#12512
25.2M
25.20 mi13:59:063:14:017:422:49
8:11
#12442
FINISH
26.22 mi14:06:303:21:257:427:24
7:16
#12297
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 mi148264568456813319(Top 46%)3756(Top 30%)3756(Top 210%)
10K6.21 mi3.10 mi14375+4514317+2514317+25114031(Top 48%)4127(Top 33%)4127(Top 231%)
15K9.32 mi3.11 mi13957+4184091+2264091+22613319(Top 46%)3756(Top 30%)3756(Top 210%)
20K12.43 mi3.11 mi13950+74110-194110-1913967(Top 48%)4197(Top 33%)4197(Top 235%)
HALF13.11 mi0.68 mi13897+534084+264084+2613291(Top 46%)3736(Top 30%)3736(Top 209%)
25K15.53 mi2.42 mi13737+1604014+704014+7013079(Top 45%)3772(Top 30%)3772(Top 211%)
30K18.64 mi3.11 mi13459+2783901+1133901+11312299(Top 42%)3475(Top 28%)3475(Top 195%)
20M20.00 mi1.36 mi13306+1533843+583843+5811840(Top 41%)3316(Top 26%)3316(Top 186%)
21M21.00 mi1.00 mi13166+1403790+533790+5311228(Top 39%)3104(Top 25%)3104(Top 174%)
35K21.75 mi0.75 mi13074+923749+413749+4111154(Top 38%)3088(Top 25%)3088(Top 173%)
23M23.00 mi1.25 mi12834+2403638+1113638+1119667(Top 33%)2433(Top 19%)2433(Top 136%)
24M24.00 mi1.00 mi12669+1653564+743564+749270(Top 32%)2323(Top 18%)2323(Top 130%)
40K24.85 mi0.85 mi12512+1573499+653499+658941(Top 31%)2257(Top 18%)2257(Top 126%)
25.2M25.20 mi0.35 mi12442+703473+263473+269489(Top 33%)2606(Top 21%)2606(Top 146%)
FINISH26.22 mi1.02 mi12297+1453422+513422+519629(Top 33%)2675(Top 21%)2675(Top 150%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21
+97ft-345ft

Overall

13319

Females

3756

F45-49

3756

5K→10K

3.1 - 6.2 mi

Top 48%
×5
+79ft-138ft

Overall

14031

Females

4127

F45-49

4127

10K→15K

6.2 - 9.3 mi

Top 46%
×3
+67ft-78ft

Overall

13319

Females

3756

F45-49

3756

15K→20K

9.3 - 12.4 mi

Top 48%
×5
+106ft-86ft

Overall

13967

Females

4197

F45-49

4197

20K→HALF

12.4 - 13.1 mi

Top 46%
×2
+19ft-37ft

Overall

13291

Females

3736

F45-49

3736

HALF→25K

13.1 - 15.5 mi

Top 45%
×4
+66ft-88ft

Overall

13079

Females

3772

F45-49

3772

25K→30K

15.5 - 18.6 mi

Top 42%
×9
+181ft-148ft

Overall

12299

Females

3475

F45-49

3475

30K→20M

18.6 - 20.0 mi

Top 41%
×5
+64ft-50ft

Overall

11840

Females

3316

F45-49

3316

20M→21M

20.0 - 21.0 mi

Top 39%
×8
+106ft-24ft

Overall

11228

Females

3104

F45-49

3104

21M→35K

21.0 - 21.8 mi

Top 38%
×7
+17ft-86ft

Overall

11154

Females

3088

F45-49

3088

35K→23M

21.8 - 23.0 mi

Top 33%
×5
+23ft-63ft

Overall

9667

Females

2433

F45-49

2433

23M→24M

23.0 - 24.0 mi

Top 32%
×6
+12ft-82ft

Overall

9270

Females

2323

F45-49

2323

24M→40K

24.0 - 24.9 mi

Top 31%
×1
+6ft-20ft

Overall

8941

Females

2257

F45-49

2257

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1
+13ft-16ft

Overall

9489

Females

2606

F45-49

2606

25.2M→FINISH

25.2 - 26.2 mi

Top 33%
×2
+22ft-21ft

Overall

9629

Females

2675

F45-49

2675

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3083*
Passed By
554
Net Change
+2529
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14826
5K → 10K586*135+451#14826#14375
10K → 15K462*44+418#14375#13957
15K → 20K169162+7#13957#13950
20K → HALF607+53#13950#13897
HALF → 25K210*50+160#13897#13737
25K → 30K337*59+278#13737#13459
30K → 20M17421+153#13459#13306
20M → 21M16727+140#13306#13166
21M → 35K997+92#13166#13074
35K → 23M250*10+240#13074#12834
23M → 24M1716+165#12834#12669
24M → 40K1658+157#12669#12512
40K → 25.2M700+70#12512#12442
25.2M → FINISH16318+145#12442#12297
TOTALS3083*554+2529

* 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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