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

Zhendong Zou

Bib: 8204β€’M

CA

Masters
Boston Marathon logo
0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 29021
Top 45%
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Top 47%
Age Group (M50-54)
#0 / 1868
Race Day Weather
51Β°/41Β°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
5KΒ· 3.11 mi
21:49
Rank: #8725
Start β†’ 5K
21:49 | 7:02/mi
10KΒ· 6.21 mi
44:27
Rank: #9801 (-1076)
5K β†’ 10K
22:38 | 7:18/mi
15KΒ· 9.32 mi
1:07:30
Rank: #10534 (-733)
10K β†’ 15K
23:03 | 7:26/mi
20KΒ· 12.43 mi
1:31:31
Rank: #11415 (-881)
15K β†’ 20K
24:01 | 7:44/mi
HALFΒ· 13.11 mi
1:36:36
Rank: #11473 (-58)
20K β†’ HALF
5:05 | 7:28/mi
25KΒ· 15.53 mi
1:55:53
Rank: #12057 (-584)
HALF β†’ 25K
19:17 | 7:58/mi
30KΒ· 18.64 mi
2:21:44
Rank: #12736 (-679)
25K β†’ 30K
25:51 | 8:20/mi
20M
2:32:58
Rank: #12858 (-122)
30K β†’ 20M
11:14 | 8:17/mi
21M
2:41:36
Rank: #12910 (-52)
20M β†’ 21M
8:38 | 8:38/mi
35KΒ· 21.75 mi
2:47:29
Rank: #12930 (-20)
21M β†’ 35K
5:53 | 7:52/mi
23M
2:57:48
Rank: #12999 (-69)
35K β†’ 23M
10:19 | 8:15/mi
24M
3:05:51
Rank: #13015 (-16)
23M β†’ 24M
8:03 | 8:03/mi
40KΒ· 24.85 mi
3:13:00
Rank: #13061 (-46)
24M β†’ 40K
7:09 | 8:22/mi
25.2M
3:15:59
Rank: #13037 (+24)
40K β†’ 25.2M
2:59 | 8:40/mi
FINISHΒ· 26.22 mi
3:24:00
Rank: #13070 (-33)
25.2M β†’ FINISH
8:01 | 7:53/mi
Is this your race?

Claim it β€” get your free Race Performance Report

An AI deep-dive into your pacing, rankings, and passing β€” built from your real splits and emailed to you, free.

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:36:36
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time1:47:24
Pace8:12 /mi
πŸ“ŠPositive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:36:5321:497:0221:49
7:02
-
10K
6.21 mi10:59:3144:277:1022:38
7:18
+0:16
15K
9.32 mi11:22:341:07:307:1523:03
7:26
+0:08
20K
12.43 mi11:46:351:31:317:2224:01
7:44
+0:18
HALF
13.11 mi11:51:401:36:367:235:05
7:28
-0:16
25K
15.53 mi12:10:571:55:537:2819:17
7:58
+0:30
30K
18.64 mi12:36:482:21:447:3725:51
8:20
+0:22
20M
20.00 mi12:48:022:32:587:3911:14
8:17
-0:03
21M
21.00 mi12:56:402:41:367:428:38
8:38
+0:21
35K
21.75 mi13:02:332:47:297:435:53
7:52
-0:46
23M
23.00 mi13:12:522:57:487:4410:19
8:15
+0:23
24M
24.00 mi13:20:553:05:517:458:03
8:03
-0:12
40K
24.85 mi13:28:043:13:007:467:09
8:22
+0:19
25.2M
25.20 mi13:31:033:15:597:472:59
8:40
+0:18
FINISH
26.22 mi13:39:043:24:007:488:01
7:53
-0:47

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

πŸ“ˆPace 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

7:02 /mi

Average Pace

7:47 /mi

Slowest Pace

8:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

1:12:35

36% of race

Time at Steady Pace

1:05:15

32% of race

Time at Slower Pace

1:06:10

32% of race

Average Pace: 7:47 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi10:36:5321:497:0221:49
7:02
#8725
10K
6.21 mi10:59:3144:277:1022:38
7:18
#9801
15K
9.32 mi11:22:341:07:307:1523:03
7:26
#10534
20K
12.43 mi11:46:351:31:317:2224:01
7:44
#11415
HALF
13.11 mi11:51:401:36:367:235:05
7:28
#11473
25K
15.53 mi12:10:571:55:537:2819:17
7:58
#12057
30K
18.64 mi12:36:482:21:447:3725:51
8:20
#12736
20M
20.00 mi12:48:022:32:587:3911:14
8:17
#12858
21M
21.00 mi12:56:402:41:367:428:38
8:38
#12910
35K
21.75 mi13:02:332:47:297:435:53
7:52
#12930
23M
23.00 mi13:12:522:57:487:4410:19
8:15
#12999
24M
24.00 mi13:20:553:05:517:458:03
8:03
#13015
40K
24.85 mi13:28:043:13:007:467:09
8:22
#13061
25.2M
25.20 mi13:31:033:15:597:472:59
8:40
#13037
FINISH
26.22 mi13:39:043:24:007:488:01
7:53
#13070
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi87257394739412112(Top 42%)8978(Top 55%)8978(Top 481%)
10K6.21 mi3.10 mi9801-10767978-5847978-58411006(Top 38%)8540(Top 52%)8540(Top 457%)
15K9.32 mi3.11 mi10534-7338318-3408318-34012112(Top 42%)8978(Top 55%)8978(Top 481%)
20K12.43 mi3.11 mi11415-8818700-3828700-38213949(Top 48%)9700(Top 59%)9700(Top 519%)
HALF13.11 mi0.68 mi11473-588720-208720-2012607(Top 43%)9201(Top 56%)9201(Top 493%)
25K15.53 mi2.42 mi12057-5848949-2298949-22915005(Top 52%)10060(Top 62%)10060(Top 539%)
30K18.64 mi3.11 mi12736-6799189-2409189-24015745(Top 54%)10296(Top 63%)10296(Top 551%)
20M20.00 mi1.36 mi12858-1229209-209209-2014690(Top 51%)9761(Top 60%)9761(Top 523%)
21M21.00 mi1.00 mi12910-529208+19208+113932(Top 48%)9328(Top 57%)9328(Top 499%)
35K21.75 mi0.75 mi12930-209209-19209-113482(Top 46%)9077(Top 56%)9077(Top 486%)
23M23.00 mi1.25 mi12999-699219-109219-1014055(Top 48%)9270(Top 57%)9270(Top 496%)
24M24.00 mi1.00 mi13015-169212+79212+714083(Top 49%)9180(Top 56%)9180(Top 491%)
40K24.85 mi0.85 mi13061-469212921214806(Top 51%)9417(Top 58%)9417(Top 504%)
25.2M25.20 mi0.35 mi13037+249192+209192+2012532(Top 43%)8371(Top 51%)8371(Top 448%)
FINISH26.22 mi1.02 mi13070-339171+219171+2114228(Top 49%)9146(Top 56%)9146(Top 490%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
Γ—21stories
+97ft-345ft

Overall

12112

Males

8978

M50-54

8978

5K→10K

3.1 - 6.2 mi

Top 38%
Γ—5stories
+79ft-138ft

Overall

11006

Males

8540

M50-54

8540

10K→15K

6.2 - 9.3 mi

Top 42%
Γ—3stories
+67ft-78ft

Overall

12112

Males

8978

M50-54

8978

15K→20K

9.3 - 12.4 mi

Top 48%
Γ—5stories
+106ft-86ft

Overall

13949

Males

9700

M50-54

9700

20K→HALF

12.4 - 13.1 mi

Top 43%
Γ—2stories
+19ft-37ft

Overall

12607

Males

9201

M50-54

9201

HALF→25K

13.1 - 15.5 mi

Top 52%
Γ—4stories
+66ft-88ft

Overall

15005

Males

10060

M50-54

10060

25K→30K

15.5 - 18.6 mi

Top 54%
Γ—9stories
+181ft-148ft

Overall

15745

Males

10296

M50-54

10296

30K→20M

18.6 - 20.0 mi

Top 51%
Γ—5stories
+64ft-50ft

Overall

14690

Males

9761

M50-54

9761

20M→21M

20.0 - 21.0 mi

Top 48%
Γ—8stories
+106ft-24ft

Overall

13932

Males

9328

M50-54

9328

21M→35K

21.0 - 21.8 mi

Top 46%
Γ—7stories
+17ft-86ft

Overall

13482

Males

9077

M50-54

9077

35K→23M

21.8 - 23.0 mi

Top 48%
Γ—5stories
+23ft-63ft

Overall

14055

Males

9270

M50-54

9270

23M→24M

23.0 - 24.0 mi

Top 49%
Γ—6stories
+12ft-82ft

Overall

14083

Males

9180

M50-54

9180

24M→40K

24.0 - 24.9 mi

Top 51%
Γ—1story
+6ft-20ft

Overall

14806

Males

9417

M50-54

9417

40K→25.2M

24.9 - 25.2 mi

Top 43%
Γ—1story
+13ft-16ft

Overall

12532

Males

8371

M50-54

8371

25.2M→FINISH

25.2 - 26.2 mi

Top 49%
Γ—2stories
+22ft-21ft

Overall

14228

Males

9146

M50-54

9146

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
654
Passed By
4998
Net Change
-4345
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#8725
5K β†’ 10K231099-1076#8725#9801
10K β†’ 15K30762-733#9801#10534
15K β†’ 20K26907-881#10534#11415
20K β†’ HALF1573-58#11415#11473
HALF β†’ 25K33617-584#11473#12057
25K β†’ 30K59738-679#12057#12736
30K β†’ 20M65187-122#12736#12858
20M β†’ 21M69121-52#12858#12910
21M β†’ 35K4464-20#12910#12930
35K β†’ 23M68137-69#12930#12999
23M β†’ 24M6884-16#12999#13015
24M β†’ 40K5399-46#13015#13061
40K β†’ 25.2M4016+24#13061#13037
25.2M β†’ FINISH6194-33#13037#13070
TOTALS6544998-4345
πŸ“Š

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

πŸ“ˆPosition Graph

Loading...

🎨Heatmap Timeline

Loading...

πŸ”„Passing Circle

Loading...

🌊Position Flow

Loading...

πŸƒRace Lanes

Loading...

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