All Results|Race Analytics|Course|Contact
BOSTON MARATHON 2026

Weijun Lannan

Bib: 21781•F

CA

Boston Marathon logo
0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Top 47%
Age Group (F50-54)
#0 / 1233
Top 47%
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
24:33
3.11 mi
Rank: #16229
Start → 5K
24:33 | 7:55/mi
10K
49:05
6.21 mi
Rank: #16305 (-76)
5K → 10K
24:32 | 7:54/mi
15K
1:13:38
9.32 mi
Rank: #16265 (+40)
10K → 15K
24:33 | 7:55/mi
20K
1:38:59
12.43 mi
Rank: #16554 (-289)
15K → 20K
25:21 | 8:10/mi
HALF
1:44:36
13.11 mi
Rank: #16661 (-107)
20K → HALF
5:37 | 8:15/mi
25K
2:07:52
15.53 mi
Rank: #18134 (-1473)
HALF → 25K
23:16 | 9:36/mi
30K
2:35:19
18.64 mi
Rank: #18235 (-101)
25K → 30K
27:27 | 8:51/mi
20M
2:47:19
20.00 mi
Rank: #18202 (+33)
30K → 20M
12:00 | 8:51/mi
21M
3:00:38
21.00 mi
Rank: #19255 (-1053)
20M → 21M
13:19 | 13:19/mi
35K
3:07:45
21.75 mi
Rank: #19388 (-133)
21M → 35K
7:07 | 9:31/mi
23M
3:17:57
23.00 mi
Rank: #19065 (+323)
35K → 23M
10:12 | 8:10/mi
24M
3:26:09
24.00 mi
Rank: #18885 (+180)
23M → 24M
8:12 | 8:12/mi
40K
3:33:47
24.85 mi
Rank: #18839 (+46)
24M → 40K
7:38 | 8:56/mi
25.2M
3:37:15
25.20 mi
Rank: #18864 (-25)
40K → 25.2M
3:28 | 10:04/mi
FINISH
3:45:49
26.22 mi
Rank: #18811 (+53)
25.2M → FINISH
8:34 | 8:25/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:44:36
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time2:01:13
Pace9:15 /mi
📊Positive Split: 15.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:4124:337:5524:33
7:55
-
10K
6.21 mi11:50:1349:057:5424:32
7:54
-0:01
15K
9.32 mi12:14:461:13:387:5524:33
7:55
+0:01
20K
12.43 mi12:40:071:38:597:5825:21
8:10
+0:15
HALF
13.11 mi12:45:441:44:367:595:37
8:15
+0:05
25K
15.53 mi13:09:002:07:528:1423:16
9:36
+1:21
30K
18.64 mi13:36:272:35:198:2027:27
8:51
-0:45
20M
20.00 mi13:48:272:47:198:2212:00
8:51
0:00
21M
21.00 mi14:01:463:00:388:3713:19
13:19
+4:28
35K
21.75 mi14:08:533:07:458:387:07
9:31
-3:48
23M
23.00 mi14:19:053:17:578:3710:12
8:10
-1:21
24M
24.00 mi14:27:173:26:098:368:12
8:12
+0:02
40K
24.85 mi14:34:553:33:478:377:38
8:56
+0:44
25.2M
25.20 mi14:38:233:37:158:383:28
10:04
+1:08
FINISH
26.22 mi14:46:573:45:498:388:34
8:25
-1:39

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

7:54 /mi

Average Pace

8:37 /mi

Slowest Pace

13:19 /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

0:00

0% of race

Time at Steady Pace

2:58:39

79% of race

Time at Slower Pace

47:10

21% of race

Average Pace: 8:37 /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 mi11:25:4124:337:5524:33
7:55
#16229
10K
6.21 mi11:50:1349:057:5424:32
7:54
#16305
15K
9.32 mi12:14:461:13:387:5524:33
7:55
#16265
20K
12.43 mi12:40:071:38:597:5825:21
8:10
#16554
HALF
13.11 mi12:45:441:44:367:595:37
8:15
#16661
25K
15.53 mi13:09:002:07:528:1423:16
9:36
#18134
30K
18.64 mi13:36:272:35:198:2027:27
8:51
#18235
20M
20.00 mi13:48:272:47:198:2212:00
8:51
#18202
21M
21.00 mi14:01:463:00:388:3713:19
13:19
#19255
35K
21.75 mi14:08:533:07:458:387:07
9:31
#19388
23M
23.00 mi14:19:053:17:578:3710:12
8:10
#19065
24M
24.00 mi14:27:173:26:098:368:12
8:12
#18885
40K
24.85 mi14:34:553:33:478:377:38
8:56
#18839
25.2M
25.20 mi14:38:233:37:158:383:28
10:04
#18864
FINISH
26.22 mi14:46:573:45:498:388:34
8:25
#18811
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi162295465546516237(Top 56%)5476(Top 44%)5476(Top 444%)
10K6.21 mi3.10 mi16305-765516-515516-5116454(Top 57%)5595(Top 44%)5595(Top 454%)
15K9.32 mi3.11 mi16265+405503+135503+1316237(Top 56%)5476(Top 44%)5476(Top 444%)
20K12.43 mi3.11 mi16554-2895673-1705673-17017253(Top 59%)6080(Top 48%)6080(Top 493%)
HALF13.11 mi0.68 mi16661-1075737-645737-6418688(Top 64%)6878(Top 55%)6878(Top 558%)
25K15.53 mi2.42 mi18134-14736576-8396576-83923282(Top 80%)9346(Top 74%)9346(Top 758%)
30K18.64 mi3.11 mi18235-1016673-976673-9718760(Top 65%)7086(Top 56%)7086(Top 575%)
20M20.00 mi1.36 mi18202+336679-66679-618162(Top 63%)6848(Top 54%)6848(Top 555%)
21M21.00 mi1.00 mi19255-10537273-5947273-59426699(Top 92%)11384(Top 91%)11384(Top 923%)
35K21.75 mi0.75 mi19388-1337359-867359-8621805(Top 75%)8851(Top 70%)8851(Top 718%)
23M23.00 mi1.25 mi19065+3237202+1577202+15713523(Top 47%)4467(Top 36%)4467(Top 362%)
24M24.00 mi1.00 mi18885+1807125+777125+7715144(Top 52%)5429(Top 43%)5429(Top 440%)
40K24.85 mi0.85 mi18839+467114+117114+1118066(Top 62%)7076(Top 56%)7076(Top 574%)
25.2M25.20 mi0.35 mi18864-257138-247138-2419619(Top 68%)7874(Top 63%)7874(Top 639%)
FINISH26.22 mi1.02 mi18811+537121+177121+1717674(Top 61%)6875(Top 55%)6875(Top 558%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21
+97ft-345ft

Overall

16237

Females

5476

F50-54

5476

5K→10K

3.1 - 6.2 mi

Top 57%
×5
+79ft-138ft

Overall

16454

Females

5595

F50-54

5595

10K→15K

6.2 - 9.3 mi

Top 56%
×3
+67ft-78ft

Overall

16237

Females

5476

F50-54

5476

15K→20K

9.3 - 12.4 mi

Top 59%
×5
+106ft-86ft

Overall

17253

Females

6080

F50-54

6080

20K→HALF

12.4 - 13.1 mi

Top 64%
×2
+19ft-37ft

Overall

18688

Females

6878

F50-54

6878

HALF→25K

13.1 - 15.5 mi

Top 80%
×4
+66ft-88ft

Overall

23282

Females

9346

F50-54

9346

25K→30K

15.5 - 18.6 mi

Top 65%
×9
+181ft-148ft

Overall

18760

Females

7086

F50-54

7086

30K→20M

18.6 - 20.0 mi

Top 63%
×5
+64ft-50ft

Overall

18162

Females

6848

F50-54

6848

20M→21M

20.0 - 21.0 mi

Top 92%
×8
+106ft-24ft

Overall

26699

Females

11384

F50-54

11384

21M→35K

21.0 - 21.8 mi

Top 75%
×7
+17ft-86ft

Overall

21805

Females

8851

F50-54

8851

35K→23M

21.8 - 23.0 mi

Top 47%
×5
+23ft-63ft

Overall

13523

Females

4467

F50-54

4467

23M→24M

23.0 - 24.0 mi

Top 52%
×6
+12ft-82ft

Overall

15144

Females

5429

F50-54

5429

24M→40K

24.0 - 24.9 mi

Top 62%
×1
+6ft-20ft

Overall

18066

Females

7076

F50-54

7076

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1
+13ft-16ft

Overall

19619

Females

7874

F50-54

7874

25.2M→FINISH

25.2 - 26.2 mi

Top 61%
×2
+22ft-21ft

Overall

17674

Females

6875

F50-54

6875

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1545*
Passed By
1666
Net Change
-2582
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16229
5K → 10K200200-76#16229#16305
10K → 15K222*182+40#16305#16265
15K → 20K104200-289#16265#16554
20K → HALF6113-107#16554#16661
HALF → 25K7200-1473#16661#18134
25K → 30K155200-101#18134#18235
30K → 20M12188+33#18235#18202
20M → 21M3200-1053#18202#19255
21M → 35K29162-133#19255#19388
35K → 23M324*1+323#19388#19065
23M → 24M1877+180#19065#18885
24M → 40K8135+46#18885#18839
40K → 25.2M2045-25#18839#18864
25.2M → FINISH8633+53#18864#18811
TOTALS1545*1666-2582

* 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

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing