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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Natalie Chun

Bib: 21880 •F •Age: N/A

CA

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 48%
Gender (Female)
#0 / 12578
Top 35%
Masters (Masters Women)
#0 / 6862
Top 19%
Age Group (F45-49)
#0 / 1786
Top 21%
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
23:36
3.11 mi
Rank: #13620
Start → 5K
23:36 | 7:36/mi
10K
46:40
6.21 mi
Rank: #12941 (+679)
5K → 10K
23:04 | 7:26/mi
15K
1:10:21
9.32 mi
Rank: #13218 (-277)
10K → 15K
23:41 | 7:38/mi
20K
1:34:50
12.43 mi
Rank: #13694 (-476)
15K → 20K
24:29 | 7:53/mi
HALF
1:40:06
13.11 mi
Rank: #13752 (-58)
20K → HALF
5:16 | 7:44/mi
25K
1:59:22
15.53 mi
Rank: #13936 (-184)
HALF → 25K
19:16 | 7:57/mi
30K
2:24:40
18.64 mi
Rank: #14019 (-83)
25K → 30K
25:18 | 8:09/mi
20M
2:35:54
20.00 mi
Rank: #14065 (-46)
30K → 20M
11:14 | 8:17/mi
21M
2:44:39
21.00 mi
Rank: #14078 (-13)
20M → 21M
8:45 | 8:45/mi
35K
2:50:30
21.75 mi
Rank: #14023 (+55)
21M → 35K
5:51 | 7:50/mi
23M
3:00:59
23.00 mi
Rank: #14053 (-30)
35K → 23M
10:29 | 8:23/mi
24M
3:08:56
24.00 mi
Rank: #14026 (+27)
23M → 24M
7:57 | 7:57/mi
40K
3:15:55
24.85 mi
Rank: #14003 (+23)
24M → 40K
6:59 | 8:11/mi
25.2M
3:18:55
25.20 mi
Rank: #13985 (+18)
40K → 25.2M
3:00 | 8:42/mi
FINISH
3:26:52
26.22 mi
Rank: #13984 (+1)
25.2M → FINISH
7:57 | 7:49/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:40:06
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:46:46
Pace8:09 /mi
📊Positive Split: 6.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:5723:367:3623:36
7:36
-
10K
6.21 mi11:48:0146:407:3123:04
7:26
-0:10
15K
9.32 mi12:11:421:10:217:3323:41
7:38
+0:12
20K
12.43 mi12:36:111:34:507:3824:29
7:53
+0:15
HALF
13.11 mi12:41:271:40:067:395:16
7:44
-0:09
25K
15.53 mi13:00:431:59:227:4219:16
7:57
+0:13
30K
18.64 mi13:26:012:24:407:4625:18
8:09
+0:12
20M
20.00 mi13:37:152:35:547:4811:14
8:17
+0:08
21M
21.00 mi13:46:002:44:397:518:45
8:45
+0:28
35K
21.75 mi13:51:512:50:307:515:51
7:50
-0:55
23M
23.00 mi14:02:203:00:597:5310:29
8:23
+0:33
24M
24.00 mi14:10:173:08:567:537:57
7:57
-0:26
40K
24.85 mi14:17:163:15:557:536:59
8:11
+0:14
25.2M
25.20 mi14:20:163:18:557:543:00
8:42
+0:31
FINISH
26.22 mi14:28:133:26:527:547:57
7:49
-0:53

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

7:26 /mi

Average Pace

7:54 /mi

Slowest Pace

8:45 /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

2:46:25

80% of race

Time at Steady Pace

40:27

20% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:53 /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 mi11:24:5723:367:3623:36
7:36
#13620
10K
6.21 mi11:48:0146:407:3123:04
7:26
#12941
15K
9.32 mi12:11:421:10:217:3323:41
7:38
#13218
20K
12.43 mi12:36:111:34:507:3824:29
7:53
#13694
HALF
13.11 mi12:41:271:40:067:395:16
7:44
#13752
25K
15.53 mi13:00:431:59:227:4219:16
7:57
#13936
30K
18.64 mi13:26:012:24:407:4625:18
8:09
#14019
20M
20.00 mi13:37:152:35:547:4811:14
8:17
#14065
21M
21.00 mi13:46:002:44:397:518:45
8:45
#14078
35K
21.75 mi13:51:512:50:307:515:51
7:50
#14023
23M
23.00 mi14:02:203:00:597:5310:29
8:23
#14053
24M
24.00 mi14:10:173:08:567:537:57
7:57
#14026
40K
24.85 mi14:17:163:15:557:536:59
8:11
#14003
25.2M
25.20 mi14:20:163:18:557:543:00
8:42
#13985
FINISH
26.22 mi14:28:133:26:527:547:57
7:49
#13984
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 mi136203853385313892(Top 48%)4087(Top 32%)4087(Top 229%)
10K6.21 mi3.10 mi12941+6793483+3703483+37012334(Top 43%)3169(Top 25%)3169(Top 177%)
15K9.32 mi3.11 mi13218-2773667-1843667-18413892(Top 48%)4087(Top 32%)4087(Top 229%)
20K12.43 mi3.11 mi13694-4763965-2983965-29815164(Top 52%)4892(Top 39%)4892(Top 274%)
HALF13.11 mi0.68 mi13752-583999-343999-3414989(Top 52%)4710(Top 37%)4710(Top 264%)
25K15.53 mi2.42 mi13936-1844122-1234122-12314970(Top 52%)4853(Top 39%)4853(Top 272%)
30K18.64 mi3.11 mi14019-834210-884210-8814530(Top 50%)4692(Top 37%)4692(Top 263%)
20M20.00 mi1.36 mi14065-464265-554265-5514736(Top 51%)4888(Top 39%)4888(Top 274%)
21M21.00 mi1.00 mi14078-134305-404305-4014691(Top 51%)4956(Top 39%)4956(Top 277%)
35K21.75 mi0.75 mi14023+554287+184287+1813258(Top 46%)4229(Top 34%)4229(Top 237%)
23M23.00 mi1.25 mi14053-304333-464333-4614951(Top 52%)5237(Top 42%)5237(Top 293%)
24M24.00 mi1.00 mi14026+274337-44337-413418(Top 46%)4477(Top 36%)4477(Top 251%)
40K24.85 mi0.85 mi14003+234357-204357-2013605(Top 47%)4666(Top 37%)4666(Top 261%)
25.2M25.20 mi0.35 mi13985+184353+44353+412947(Top 45%)4335(Top 34%)4335(Top 243%)
FINISH26.22 mi1.02 mi13984+14372-194372-1913807(Top 48%)4818(Top 38%)4818(Top 270%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21
+97ft-345ft

Overall

13892

Females

4087

F45-49

4087

5K→10K

3.1 - 6.2 mi

Top 43%
×5
+79ft-138ft

Overall

12334

Females

3169

F45-49

3169

10K→15K

6.2 - 9.3 mi

Top 48%
×3
+67ft-78ft

Overall

13892

Females

4087

F45-49

4087

15K→20K

9.3 - 12.4 mi

Top 52%
×5
+106ft-86ft

Overall

15164

Females

4892

F45-49

4892

20K→HALF

12.4 - 13.1 mi

Top 52%
×2
+19ft-37ft

Overall

14989

Females

4710

F45-49

4710

HALF→25K

13.1 - 15.5 mi

Top 52%
×4
+66ft-88ft

Overall

14970

Females

4853

F45-49

4853

25K→30K

15.5 - 18.6 mi

Top 50%
×9
+181ft-148ft

Overall

14530

Females

4692

F45-49

4692

30K→20M

18.6 - 20.0 mi

Top 51%
×5
+64ft-50ft

Overall

14736

Females

4888

F45-49

4888

20M→21M

20.0 - 21.0 mi

Top 51%
×8
+106ft-24ft

Overall

14691

Females

4956

F45-49

4956

21M→35K

21.0 - 21.8 mi

Top 46%
×7
+17ft-86ft

Overall

13258

Females

4229

F45-49

4229

35K→23M

21.8 - 23.0 mi

Top 52%
×5
+23ft-63ft

Overall

14951

Females

5237

F45-49

5237

23M→24M

23.0 - 24.0 mi

Top 46%
×6
+12ft-82ft

Overall

13418

Females

4477

F45-49

4477

24M→40K

24.0 - 24.9 mi

Top 47%
×1
+6ft-20ft

Overall

13605

Females

4666

F45-49

4666

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1
+13ft-16ft

Overall

12947

Females

4335

F45-49

4335

25.2M→FINISH

25.2 - 26.2 mi

Top 48%
×2
+22ft-21ft

Overall

13807

Females

4818

F45-49

4818

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1774*
Passed By
1515
Net Change
-364
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13620
5K → 10K750*71+679#13620#12941
10K → 15K103200-277#12941#13218
15K → 20K62200-476#13218#13694
20K → HALF1775-58#13694#13752
HALF → 25K73200-184#13752#13936
25K → 30K165200-83#13936#14019
30K → 20M85131-46#14019#14065
20M → 21M93106-13#14065#14078
21M → 35K7924+55#14078#14023
35K → 23M84114-30#14023#14053
23M → 24M7750+27#14053#14026
24M → 40K8360+23#14026#14003
40K → 25.2M3113+18#14003#13985
25.2M → FINISH7271+1#13985#13984
TOTALS1774*1515-364

* 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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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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