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BOSTON MARATHON 2026

Louisa Tan

Bib: 21561•F

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Top 41%
Age Group (F45-49)
#0 / 1786
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
25:50
3.11 mi
Rank: #18961
Start → 5K
25:50 | 8:19/mi
10K
51:44
6.21 mi
Rank: #19188 (-227)
5K → 10K
25:54 | 8:21/mi
15K
1:17:31
9.32 mi
Rank: #19105 (+83)
10K → 15K
25:47 | 8:18/mi
20K
1:44:09
12.43 mi
Rank: #19262 (-157)
15K → 20K
26:38 | 8:35/mi
HALF
1:49:46
13.11 mi
Rank: #19228 (+34)
20K → HALF
5:37 | 8:15/mi
25K
2:10:08
15.53 mi
Rank: #19021 (+207)
HALF → 25K
20:22 | 8:24/mi
30K
2:36:51
18.64 mi
Rank: #18701 (+320)
25K → 30K
26:43 | 8:36/mi
20M
2:48:37
20.00 mi
Rank: #18565 (+136)
30K → 20M
11:46 | 8:40/mi
21M
2:57:35
21.00 mi
Rank: #18402 (+163)
20M → 21M
8:58 | 8:58/mi
35K
3:03:48
21.75 mi
Rank: #18336 (+66)
21M → 35K
6:13 | 8:19/mi
23M
3:14:23
23.00 mi
Rank: #18170 (+166)
35K → 23M
10:35 | 8:28/mi
24M
3:22:43
24.00 mi
Rank: #18054 (+116)
23M → 24M
8:20 | 8:20/mi
40K
3:29:49
24.85 mi
Rank: #17906 (+148)
24M → 40K
7:06 | 8:19/mi
25.2M
3:33:08
25.20 mi
Rank: #17892 (+14)
40K → 25.2M
3:19 | 9:38/mi
FINISH
3:41:10
26.22 mi
Rank: #17746 (+146)
25.2M → FINISH
8:02 | 7:53/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:49:46
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time1:51:24
Pace8:30 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:0325:508:1925:50
8:19
-
10K
6.21 mi11:52:5751:448:2025:54
8:21
+0:02
15K
9.32 mi12:18:441:17:318:2025:47
8:18
-0:03
20K
12.43 mi12:45:221:44:098:2326:38
8:35
+0:17
HALF
13.11 mi12:50:591:49:468:235:37
8:15
-0:20
25K
15.53 mi13:11:212:10:088:2320:22
8:24
+0:09
30K
18.64 mi13:38:042:36:518:2526:43
8:36
+0:12
20M
20.00 mi13:49:502:48:378:2611:46
8:40
+0:04
21M
21.00 mi13:58:482:57:358:288:58
8:58
+0:18
35K
21.75 mi14:05:013:03:488:286:13
8:19
-0:39
23M
23.00 mi14:15:363:14:238:2810:35
8:28
+0:09
24M
24.00 mi14:23:563:22:438:278:20
8:20
-0:08
40K
24.85 mi14:31:023:29:498:277:06
8:19
-0:01
25.2M
25.20 mi14:34:213:33:088:283:19
9:38
+1:19
FINISH
26.22 mi14:42:233:41:108:278:02
7:53
-1:45

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

7:53 /mi

Average Pace

8:26 /mi

Slowest Pace

9:38 /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

8:02

4% of race

Time at Steady Pace

2:15:44

61% of race

Time at Slower Pace

1:17:24

35% of race

Average Pace: 8:26 /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 mi11:27:0325:508:1925:50
8:19
#18961
10K
6.21 mi11:52:5751:448:2025:54
8:21
#19188
15K
9.32 mi12:18:441:17:318:2025:47
8:18
#19105
20K
12.43 mi12:45:221:44:098:2326:38
8:35
#19262
HALF
13.11 mi12:50:591:49:468:235:37
8:15
#19228
25K
15.53 mi13:11:212:10:088:2320:22
8:24
#19021
30K
18.64 mi13:38:042:36:518:2526:43
8:36
#18701
20M
20.00 mi13:49:502:48:378:2611:46
8:40
#18565
21M
21.00 mi13:58:482:57:358:288:58
8:58
#18402
35K
21.75 mi14:05:013:03:488:286:13
8:19
#18336
23M
23.00 mi14:15:363:14:238:2810:35
8:28
#18170
24M
24.00 mi14:23:563:22:438:278:20
8:20
#18054
40K
24.85 mi14:31:023:29:498:277:06
8:19
#17906
25.2M
25.20 mi14:34:213:33:088:283:19
9:38
#17892
FINISH
26.22 mi14:42:233:41:108:278:02
7:53
#17746
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 mi189617064706418980(Top 65%)7031(Top 56%)7031(Top 394%)
10K6.21 mi3.10 mi19188-2277169-1057169-10519413(Top 67%)7259(Top 58%)7259(Top 406%)
15K9.32 mi3.11 mi19105+837116+537116+5318980(Top 65%)7031(Top 56%)7031(Top 394%)
20K12.43 mi3.11 mi19262-1577206-907206-9019716(Top 68%)7471(Top 59%)7471(Top 418%)
HALF13.11 mi0.68 mi19228+347186+207186+2018662(Top 64%)6852(Top 54%)6852(Top 384%)
25K15.53 mi2.42 mi19021+2077086+1007086+10017985(Top 62%)6550(Top 52%)6550(Top 367%)
30K18.64 mi3.11 mi18701+3206936+1506936+15017479(Top 60%)6386(Top 51%)6386(Top 358%)
20M20.00 mi1.36 mi18565+1366876+606876+6017200(Top 59%)6302(Top 50%)6302(Top 353%)
21M21.00 mi1.00 mi18402+1636803+736803+7315987(Top 55%)5687(Top 45%)5687(Top 318%)
35K21.75 mi0.75 mi18336+666780+236780+2316529(Top 57%)6053(Top 48%)6053(Top 339%)
23M23.00 mi1.25 mi18170+1666711+696711+6915472(Top 53%)5539(Top 44%)5539(Top 310%)
24M24.00 mi1.00 mi18054+1166663+486663+4815951(Top 55%)5880(Top 47%)5880(Top 329%)
40K24.85 mi0.85 mi17906+1486605+586605+5814530(Top 50%)5186(Top 41%)5186(Top 290%)
25.2M25.20 mi0.35 mi17892+146602+36602+317921(Top 62%)6984(Top 56%)6984(Top 391%)
FINISH26.22 mi1.02 mi17746+1466543+596543+5914423(Top 50%)5155(Top 41%)5155(Top 289%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21
+97ft-345ft

Overall

18980

Females

7031

F45-49

7031

5K→10K

3.1 - 6.2 mi

Top 67%
×5
+79ft-138ft

Overall

19413

Females

7259

F45-49

7259

10K→15K

6.2 - 9.3 mi

Top 65%
×3
+67ft-78ft

Overall

18980

Females

7031

F45-49

7031

15K→20K

9.3 - 12.4 mi

Top 68%
×5
+106ft-86ft

Overall

19716

Females

7471

F45-49

7471

20K→HALF

12.4 - 13.1 mi

Top 64%
×2
+19ft-37ft

Overall

18662

Females

6852

F45-49

6852

HALF→25K

13.1 - 15.5 mi

Top 62%
×4
+66ft-88ft

Overall

17985

Females

6550

F45-49

6550

25K→30K

15.5 - 18.6 mi

Top 60%
×9
+181ft-148ft

Overall

17479

Females

6386

F45-49

6386

30K→20M

18.6 - 20.0 mi

Top 59%
×5
+64ft-50ft

Overall

17200

Females

6302

F45-49

6302

20M→21M

20.0 - 21.0 mi

Top 55%
×8
+106ft-24ft

Overall

15987

Females

5687

F45-49

5687

21M→35K

21.0 - 21.8 mi

Top 57%
×7
+17ft-86ft

Overall

16529

Females

6053

F45-49

6053

35K→23M

21.8 - 23.0 mi

Top 53%
×5
+23ft-63ft

Overall

15472

Females

5539

F45-49

5539

23M→24M

23.0 - 24.0 mi

Top 55%
×6
+12ft-82ft

Overall

15951

Females

5880

F45-49

5880

24M→40K

24.0 - 24.9 mi

Top 50%
×1
+6ft-20ft

Overall

14530

Females

5186

F45-49

5186

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1
+13ft-16ft

Overall

17921

Females

6984

F45-49

6984

25.2M→FINISH

25.2 - 26.2 mi

Top 50%
×2
+22ft-21ft

Overall

14423

Females

5155

F45-49

5155

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2218*
Passed By
754
Net Change
+1215
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18961
5K → 10K164200-227#18961#19188
10K → 15K218*135+83#19188#19105
15K → 20K101200-157#19105#19262
20K → HALF4713+34#19262#19228
HALF → 25K229*22+207#19228#19021
25K → 30K370*50+320#19021#18701
30K → 20M15822+136#18701#18565
20M → 21M17815+163#18565#18402
21M → 35K8317+66#18402#18336
35K → 23M18519+166#18336#18170
23M → 24M13620+116#18170#18054
24M → 40K1557+148#18054#17906
40K → 25.2M3824+14#17906#17892
25.2M → FINISH15610+146#17892#17746
TOTALS2218*754+1215

* 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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing