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BOSTON MARATHON 2026

Lei Chen

Bib: 22828 •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
Masters (Masters Women)
#0 / 6862
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
25:06
3.11 mi
Rank: #17498
Start → 5K
25:06 | 8:05/mi
10K
51:12
6.21 mi
Rank: #18652 (-1154)
5K → 10K
26:06 | 8:25/mi
15K
1:17:52
9.32 mi
Rank: #19329 (-677)
10K → 15K
26:40 | 8:35/mi
20K
1:45:47
12.43 mi
Rank: #19989 (-660)
15K → 20K
27:55 | 9:00/mi
HALF
1:52:05
13.11 mi
Rank: #20201 (-212)
20K → HALF
6:18 | 9:15/mi
25K
2:15:47
15.53 mi
Rank: #21046 (-845)
HALF → 25K
23:42 | 9:47/mi
30K
2:47:58
18.64 mi
Rank: #21819 (-773)
25K → 30K
32:11 | 10:22/mi
20M
3:02:19
20.00 mi
Rank: #22046 (-227)
30K → 20M
14:21 | 10:34/mi
21M
3:13:43
21.00 mi
Rank: #22239 (-193)
20M → 21M
11:24 | 11:24/mi
35K
3:21:14
21.75 mi
Rank: #22290 (-51)
21M → 35K
7:31 | 10:03/mi
23M
3:34:21
23.00 mi
Rank: #22381 (-91)
35K → 23M
13:07 | 10:29/mi
24M
3:44:25
24.00 mi
Rank: #22412 (-31)
23M → 24M
10:04 | 10:04/mi
40K
3:53:20
24.85 mi
Rank: #22428 (-16)
24M → 40K
8:55 | 10:26/mi
25.2M
3:57:09
25.20 mi
Rank: #22426 (+2)
40K → 25.2M
3:49 | 11:05/mi
FINISH
4:07:04
26.22 mi
Rank: #22447 (-21)
25.2M → FINISH
9:55 | 9:44/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:52:05
Pace8:34 /mi
2nd Half
Distance13.11 mi
Time2:14:59
Pace10:18 /mi
📊Positive Split: 20.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:2225:068:0525:06
8:05
-
10K
6.21 mi11:53:2851:128:1526:06
8:25
+0:20
15K
9.32 mi12:20:081:17:528:2226:40
8:35
+0:10
20K
12.43 mi12:48:031:45:478:3127:55
9:00
+0:25
HALF
13.11 mi12:54:211:52:058:346:18
9:15
+0:15
25K
15.53 mi13:18:032:15:478:4523:42
9:47
+0:32
30K
18.64 mi13:50:142:47:589:0132:11
10:22
+0:35
20M
20.00 mi14:04:353:02:199:0714:21
10:34
+0:12
21M
21.00 mi14:15:593:13:439:1411:24
11:24
+0:50
35K
21.75 mi14:23:303:21:149:167:31
10:03
-1:21
23M
23.00 mi14:36:373:34:219:2013:07
10:29
+0:26
24M
24.00 mi14:46:413:44:259:2210:04
10:04
-0:25
40K
24.85 mi14:55:363:53:209:248:55
10:26
+0:22
25.2M
25.20 mi14:59:253:57:099:253:49
11:05
+0:39
FINISH
26.22 mi15:09:204:07:049:269:55
9:44
-1:21

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

8:05 /mi

Average Pace

9:26 /mi

Slowest Pace

11:24 /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

1:52:05

45% of race

Time at Steady Pace

1:45:25

43% of race

Time at Slower Pace

29:34

12% of race

Average Pace: 9:25 /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 mi11:27:2225:068:0525:06
8:05
#17498
10K
6.21 mi11:53:2851:128:1526:06
8:25
#18652
15K
9.32 mi12:20:081:17:528:2226:40
8:35
#19329
20K
12.43 mi12:48:031:45:478:3127:55
9:00
#19989
HALF
13.11 mi12:54:211:52:058:346:18
9:15
#20201
25K
15.53 mi13:18:032:15:478:4523:42
9:47
#21046
30K
18.64 mi13:50:142:47:589:0132:11
10:22
#21819
20M
20.00 mi14:04:353:02:199:0714:21
10:34
#22046
21M
21.00 mi14:15:593:13:439:1411:24
11:24
#22239
35K
21.75 mi14:23:303:21:149:167:31
10:03
#22290
23M
23.00 mi14:36:373:34:219:2013:07
10:29
#22381
24M
24.00 mi14:46:413:44:259:2210:04
10:04
#22412
40K
24.85 mi14:55:363:53:209:248:55
10:26
#22428
25.2M
25.20 mi14:59:253:57:099:253:49
11:05
#22426
FINISH
26.22 mi15:09:204:07:049:269:55
9:44
#22447
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 mi174986213621320593(Top 71%)7898(Top 63%)7898(Top 442%)
10K6.21 mi3.10 mi18652-11546860-6476860-64719792(Top 68%)7480(Top 59%)7480(Top 419%)
15K9.32 mi3.11 mi19329-6777237-3777237-37720593(Top 71%)7898(Top 63%)7898(Top 442%)
20K12.43 mi3.11 mi19989-6607630-3937630-39321866(Top 75%)8590(Top 68%)8590(Top 481%)
HALF13.11 mi0.68 mi20201-2127739-1097739-10923633(Top 81%)9492(Top 75%)9492(Top 531%)
25K15.53 mi2.42 mi21046-8458188-4498188-44923747(Top 82%)9588(Top 76%)9588(Top 537%)
30K18.64 mi3.11 mi21819-7738585-3978585-39723990(Top 83%)9820(Top 78%)9820(Top 550%)
20M20.00 mi1.36 mi22046-2278718-1338718-13324012(Top 83%)9915(Top 79%)9915(Top 555%)
21M21.00 mi1.00 mi22239-1938834-1168834-11623970(Top 83%)9955(Top 79%)9955(Top 557%)
35K21.75 mi0.75 mi22290-518875-418875-4123285(Top 80%)9590(Top 76%)9590(Top 537%)
23M23.00 mi1.25 mi22381-918934-598934-5923338(Top 80%)9693(Top 77%)9693(Top 543%)
24M24.00 mi1.00 mi22412-318968-348968-3422995(Top 79%)9545(Top 76%)9545(Top 534%)
40K24.85 mi0.85 mi22428-168997-298997-2923050(Top 79%)9643(Top 77%)9643(Top 540%)
25.2M25.20 mi0.35 mi22426+29007-109007-1022557(Top 78%)9364(Top 74%)9364(Top 524%)
FINISH26.22 mi1.02 mi22447-219024-179024-1723092(Top 80%)9652(Top 77%)9652(Top 540%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21
+97ft-345ft

Overall

20593

Females

7898

F45-49

7898

5K→10K

3.1 - 6.2 mi

Top 68%
×5
+79ft-138ft

Overall

19792

Females

7480

F45-49

7480

10K→15K

6.2 - 9.3 mi

Top 71%
×3
+67ft-78ft

Overall

20593

Females

7898

F45-49

7898

15K→20K

9.3 - 12.4 mi

Top 75%
×5
+106ft-86ft

Overall

21866

Females

8590

F45-49

8590

20K→HALF

12.4 - 13.1 mi

Top 81%
×2
+19ft-37ft

Overall

23633

Females

9492

F45-49

9492

HALF→25K

13.1 - 15.5 mi

Top 82%
×4
+66ft-88ft

Overall

23747

Females

9588

F45-49

9588

25K→30K

15.5 - 18.6 mi

Top 83%
×9
+181ft-148ft

Overall

23990

Females

9820

F45-49

9820

30K→20M

18.6 - 20.0 mi

Top 83%
×5
+64ft-50ft

Overall

24012

Females

9915

F45-49

9915

20M→21M

20.0 - 21.0 mi

Top 83%
×8
+106ft-24ft

Overall

23970

Females

9955

F45-49

9955

21M→35K

21.0 - 21.8 mi

Top 80%
×7
+17ft-86ft

Overall

23285

Females

9590

F45-49

9590

35K→23M

21.8 - 23.0 mi

Top 80%
×5
+23ft-63ft

Overall

23338

Females

9693

F45-49

9693

23M→24M

23.0 - 24.0 mi

Top 79%
×6
+12ft-82ft

Overall

22995

Females

9545

F45-49

9545

24M→40K

24.0 - 24.9 mi

Top 79%
×1
+6ft-20ft

Overall

23050

Females

9643

F45-49

9643

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1
+13ft-16ft

Overall

22557

Females

9364

F45-49

9364

25.2M→FINISH

25.2 - 26.2 mi

Top 80%
×2
+22ft-21ft

Overall

23092

Females

9652

F45-49

9652

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
442
Passed By
2030
Net Change
-4949
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17498
5K → 10K30200-1154#17498#18652
10K → 15K32200-677#18652#19329
15K → 20K37200-660#19329#19989
20K → HALF3200-212#19989#20201
HALF → 25K19200-845#20201#21046
25K → 30K34200-773#21046#21819
30K → 20M38200-227#21819#22046
20M → 21M27200-193#22046#22239
21M → 35K3586-51#22239#22290
35K → 23M47138-91#22290#22381
23M → 24M3768-31#22381#22412
24M → 40K5167-16#22412#22428
40K → 25.2M2119+2#22428#22426
25.2M → FINISH3152-21#22426#22447
TOTALS4422030-4949
📊

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