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BOSTON MARATHON 2026

Xin Zhou

Bib: 29831•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
Age Group (F40-44)
#0 / 1737
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
28:03
3.11 mi
Rank: #22803
Start → 5K
28:03 | 9:02/mi
10K
56:09
6.21 mi
Rank: #22908 (-105)
5K → 10K
28:06 | 9:03/mi
15K
1:25:02
9.32 mi
Rank: #23246 (-338)
10K → 15K
28:53 | 9:18/mi
20K
1:54:54
12.43 mi
Rank: #23537 (-291)
15K → 20K
29:52 | 9:37/mi
HALF
2:01:24
13.11 mi
Rank: #23596 (-59)
20K → HALF
6:30 | 9:33/mi
25K
2:25:57
15.53 mi
Rank: #23762 (-166)
HALF → 25K
24:33 | 10:08/mi
30K
2:58:50
18.64 mi
Rank: #23900 (-138)
25K → 30K
32:53 | 10:36/mi
20M
3:12:50
20.00 mi
Rank: #23843 (+57)
30K → 20M
14:00 | 10:19/mi
21M
3:24:09
21.00 mi
Rank: #23828 (+15)
20M → 21M
11:19 | 11:19/mi
35K
3:32:16
21.75 mi
Rank: #23885 (-57)
21M → 35K
8:07 | 10:51/mi
23M
3:46:10
23.00 mi
Rank: #23931 (-46)
35K → 23M
13:54 | 11:07/mi
24M
3:56:14
24.00 mi
Rank: #23876 (+55)
23M → 24M
10:04 | 10:04/mi
40K
4:05:27
24.85 mi
Rank: #23891 (-15)
24M → 40K
9:13 | 10:47/mi
25.2M
4:09:33
25.20 mi
Rank: #23911 (-20)
40K → 25.2M
4:06 | 11:54/mi
FINISH
4:20:03
26.22 mi
Rank: #23919 (-8)
25.2M → FINISH
10:30 | 10:19/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:01:24
Pace9:16 /mi
2nd Half
Distance13.11 mi
Time2:18:39
Pace10:35 /mi
📊Positive Split: 14.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:1128:039:0228:03
9:02
-
10K
6.21 mi12:20:1756:099:0328:06
9:03
+0:01
15K
9.32 mi12:49:101:25:029:0828:53
9:18
+0:15
20K
12.43 mi13:19:021:54:549:1529:52
9:37
+0:19
HALF
13.11 mi13:25:322:01:249:166:30
9:33
-0:04
25K
15.53 mi13:50:052:25:579:2424:33
10:08
+0:35
30K
18.64 mi14:22:582:58:509:3632:53
10:36
+0:28
20M
20.00 mi14:36:583:12:509:3914:00
10:19
-0:17
21M
21.00 mi14:48:173:24:099:4411:19
11:19
+1:00
35K
21.75 mi14:56:243:32:169:468:07
10:51
-0:28
23M
23.00 mi15:10:183:46:109:5113:54
11:07
+0:16
24M
24.00 mi15:20:223:56:149:5110:04
10:04
-1:03
40K
24.85 mi15:29:354:05:279:539:13
10:47
+0:43
25.2M
25.20 mi15:33:414:09:339:554:06
11:54
+1:07
FINISH
26.22 mi15:44:114:20:039:5610:30
10:19
-1:35

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

9:02 /mi

Average Pace

9:56 /mi

Slowest Pace

11:54 /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

2:01:24

47% of race

Time at Steady Pace

1:32:00

35% of race

Time at Slower Pace

46:39

18% of race

Average Pace: 9:55 /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 mi11:52:1128:039:0228:03
9:02
#22803
10K
6.21 mi12:20:1756:099:0328:06
9:03
#22908
15K
9.32 mi12:49:101:25:029:0828:53
9:18
#23246
20K
12.43 mi13:19:021:54:549:1529:52
9:37
#23537
HALF
13.11 mi13:25:322:01:249:166:30
9:33
#23596
25K
15.53 mi13:50:052:25:579:2424:33
10:08
#23762
30K
18.64 mi14:22:582:58:509:3632:53
10:36
#23900
20M
20.00 mi14:36:583:12:509:3914:00
10:19
#23843
21M
21.00 mi14:48:173:24:099:4411:19
11:19
#23828
35K
21.75 mi14:56:243:32:169:468:07
10:51
#23885
23M
23.00 mi15:10:183:46:109:5113:54
11:07
#23931
24M
24.00 mi15:20:223:56:149:5110:04
10:04
#23876
40K
24.85 mi15:29:354:05:279:539:13
10:47
#23891
25.2M
25.20 mi15:33:414:09:339:554:06
11:54
#23911
FINISH
26.22 mi15:44:114:20:039:5610:30
10:19
#23919
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi228039075907523843(Top 82%)9576(Top 76%)9576(Top 551%)
10K6.21 mi3.10 mi22908-1059112-379112-3723027(Top 79%)9174(Top 73%)9174(Top 528%)
15K9.32 mi3.11 mi23246-3389277-1659277-16523843(Top 82%)9576(Top 76%)9576(Top 551%)
20K12.43 mi3.11 mi23537-2919425-1489425-14824091(Top 83%)9731(Top 77%)9731(Top 560%)
HALF13.11 mi0.68 mi23596-599461-369461-3624482(Top 84%)9935(Top 79%)9935(Top 572%)
25K15.53 mi2.42 mi23762-1669556-959556-9524581(Top 85%)10018(Top 80%)10018(Top 577%)
30K18.64 mi3.11 mi23900-1389641-859641-8524484(Top 84%)10108(Top 80%)10108(Top 582%)
20M20.00 mi1.36 mi23843+579627+149627+1423375(Top 81%)9577(Top 76%)9577(Top 551%)
21M21.00 mi1.00 mi23828+159636-99636-923801(Top 82%)9868(Top 78%)9868(Top 568%)
35K21.75 mi0.75 mi23885-579677-419677-4124992(Top 86%)10513(Top 84%)10513(Top 605%)
23M23.00 mi1.25 mi23931-469720-439720-4324723(Top 85%)10423(Top 83%)10423(Top 600%)
24M24.00 mi1.00 mi23876+559703+179703+1723000(Top 79%)9550(Top 76%)9550(Top 550%)
40K24.85 mi0.85 mi23891-159729-269729-2623815(Top 82%)10036(Top 80%)10036(Top 578%)
25.2M25.20 mi0.35 mi23911-209750-219750-2124265(Top 84%)10264(Top 82%)10264(Top 591%)
FINISH26.22 mi1.02 mi23919-89766-169766-1624606(Top 85%)10421(Top 83%)10421(Top 600%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21
+97ft-345ft

Overall

23843

Females

9576

F40-44

9576

5K→10K

3.1 - 6.2 mi

Top 79%
×5
+79ft-138ft

Overall

23027

Females

9174

F40-44

9174

10K→15K

6.2 - 9.3 mi

Top 82%
×3
+67ft-78ft

Overall

23843

Females

9576

F40-44

9576

15K→20K

9.3 - 12.4 mi

Top 83%
×5
+106ft-86ft

Overall

24091

Females

9731

F40-44

9731

20K→HALF

12.4 - 13.1 mi

Top 84%
×2
+19ft-37ft

Overall

24482

Females

9935

F40-44

9935

HALF→25K

13.1 - 15.5 mi

Top 85%
×4
+66ft-88ft

Overall

24581

Females

10018

F40-44

10018

25K→30K

15.5 - 18.6 mi

Top 84%
×9
+181ft-148ft

Overall

24484

Females

10108

F40-44

10108

30K→20M

18.6 - 20.0 mi

Top 81%
×5
+64ft-50ft

Overall

23375

Females

9577

F40-44

9577

20M→21M

20.0 - 21.0 mi

Top 82%
×8
+106ft-24ft

Overall

23801

Females

9868

F40-44

9868

21M→35K

21.0 - 21.8 mi

Top 86%
×7
+17ft-86ft

Overall

24992

Females

10513

F40-44

10513

35K→23M

21.8 - 23.0 mi

Top 85%
×5
+23ft-63ft

Overall

24723

Females

10423

F40-44

10423

23M→24M

23.0 - 24.0 mi

Top 79%
×6
+12ft-82ft

Overall

23000

Females

9550

F40-44

9550

24M→40K

24.0 - 24.9 mi

Top 82%
×1
+6ft-20ft

Overall

23815

Females

10036

F40-44

10036

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1
+13ft-16ft

Overall

24265

Females

10264

F40-44

10264

25.2M→FINISH

25.2 - 26.2 mi

Top 85%
×2
+22ft-21ft

Overall

24606

Females

10421

F40-44

10421

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
921
Passed By
1504
Net Change
-1116
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22803
5K → 10K200200-105#22803#22908
10K → 15K69200-338#22908#23246
15K → 20K70200-291#23246#23537
20K → HALF968-59#23537#23596
HALF → 25K58200-166#23596#23762
25K → 30K98200-138#23762#23900
30K → 20M9437+57#23900#23843
20M → 21M7560+15#23843#23828
21M → 35K2481-57#23828#23885
35K → 23M5197-46#23885#23931
23M → 24M7318+55#23931#23876
24M → 40K4156-15#23876#23891
40K → 25.2M1333-20#23891#23911
25.2M → FINISH4654-8#23911#23919
TOTALS9211504-1116
📊

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