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BOSTON MARATHON 2026

Yi Zhou

Bib: 12788•M

TX

Masters
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0:00
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Overall
#0 / 29021
Top 34%
Gender (Male)
#0 / 16340
Top 47%
Masters (Masters Men)
#0 / 10617
Top 35%
Age Group (M50-54)
#0 / 1868
Top 34%
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· 3.11 mi
22:31
Rank: #10586
Start → 5K
22:31 | 7:15/mi
10K· 6.21 mi
44:53
Rank: #10399 (+187)
5K → 10K
22:22 | 7:12/mi
15K· 9.32 mi
1:07:06
Rank: #10131 (+268)
10K → 15K
22:13 | 7:10/mi
20K· 12.43 mi
1:29:34
Rank: #9946 (+185)
15K → 20K
22:28 | 7:14/mi
HALF· 13.11 mi
1:34:25
Rank: #9926 (+20)
20K → HALF
4:51 | 7:07/mi
25K· 15.53 mi
1:52:03
Rank: #9829 (+97)
HALF → 25K
17:38 | 7:17/mi
30K· 18.64 mi
2:15:09
Rank: #9651 (+178)
25K → 30K
23:06 | 7:27/mi
20M
2:25:18
Rank: #9572 (+79)
30K → 20M
10:09 | 7:29/mi
21M
2:33:12
Rank: #9514 (+58)
20M → 21M
7:54 | 7:54/mi
35K· 21.75 mi
2:38:43
Rank: #9484 (+30)
21M → 35K
5:31 | 7:23/mi
23M
2:48:11
Rank: #9383 (+101)
35K → 23M
9:28 | 7:34/mi
24M
2:55:36
Rank: #9355 (+28)
23M → 24M
7:25 | 7:25/mi
40K· 24.85 mi
3:02:19
Rank: #9399 (-44)
24M → 40K
6:43 | 7:52/mi
25.2M
3:05:19
Rank: #9467 (-68)
40K → 25.2M
3:00 | 8:42/mi
FINISH· 26.22 mi
3:13:40
Rank: #9766 (-299)
25.2M → FINISH
8:21 | 8:12/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:34:25
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time1:39:15
Pace7:35 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2322:317:1522:31
7:15
-
10K
6.21 mi11:13:4544:537:1422:22
7:12
-0:03
15K
9.32 mi11:35:581:07:067:1222:13
7:10
-0:02
20K
12.43 mi11:58:261:29:347:1322:28
7:14
+0:04
HALF
13.11 mi12:03:171:34:257:134:51
7:07
-0:07
25K
15.53 mi12:20:551:52:037:1317:38
7:17
+0:10
30K
18.64 mi12:44:012:15:097:1623:06
7:27
+0:10
20M
20.00 mi12:54:102:25:187:1610:09
7:29
+0:02
21M
21.00 mi13:02:042:33:127:187:54
7:54
+0:25
35K
21.75 mi13:07:352:38:437:185:31
7:23
-0:31
23M
23.00 mi13:17:032:48:117:199:28
7:34
+0:11
24M
24.00 mi13:24:282:55:367:207:25
7:25
-0:09
40K
24.85 mi13:31:113:02:197:216:43
7:52
+0:27
25.2M
25.20 mi13:34:113:05:197:223:00
8:42
+0:50
FINISH
26.22 mi13:42:323:13:407:248:21
8:12
-0:30

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

7:07 /mi

Average Pace

7:24 /mi

Slowest Pace

8:42 /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

49:26

26% of race

Time at Steady Pace

1:58:16

61% of race

Time at Slower Pace

25:58

13% of race

Average Pace: 7:23 /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 mi10:51:2322:317:1522:31
7:15
#10586
10K
6.21 mi11:13:4544:537:1422:22
7:12
#10399
15K
9.32 mi11:35:581:07:067:1222:13
7:10
#10131
20K
12.43 mi11:58:261:29:347:1322:28
7:14
#9946
HALF
13.11 mi12:03:171:34:257:134:51
7:07
#9926
25K
15.53 mi12:20:551:52:037:1317:38
7:17
#9829
30K
18.64 mi12:44:012:15:097:1623:06
7:27
#9651
20M
20.00 mi12:54:102:25:187:1610:09
7:29
#9572
21M
21.00 mi13:02:042:33:127:187:54
7:54
#9514
35K
21.75 mi13:07:352:38:437:185:31
7:23
#9484
23M
23.00 mi13:17:032:48:117:199:28
7:34
#9383
24M
24.00 mi13:24:282:55:367:207:25
7:25
#9355
40K
24.85 mi13:31:113:02:197:216:43
7:52
#9399
25.2M
25.20 mi13:34:113:05:197:223:00
8:42
#9467
FINISH
26.22 mi13:42:323:13:407:248:21
8:12
#9766
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 mi10586836783679688(Top 33%)7867(Top 48%)7867(Top 421%)
10K6.21 mi3.10 mi10399+1878271+968271+9610252(Top 35%)8186(Top 50%)8186(Top 438%)
15K9.32 mi3.11 mi10131+2688127+1448127+1449688(Top 33%)7867(Top 48%)7867(Top 421%)
20K12.43 mi3.11 mi9946+1857996+1317996+1319588(Top 33%)7717(Top 47%)7717(Top 413%)
HALF13.11 mi0.68 mi9926+207982+147982+149535(Top 33%)7747(Top 47%)7747(Top 415%)
25K15.53 mi2.42 mi9829+977908+747908+749461(Top 33%)7576(Top 46%)7576(Top 406%)
30K18.64 mi3.11 mi9651+1787755+1537755+1539117(Top 31%)7244(Top 44%)7244(Top 388%)
20M20.00 mi1.36 mi9572+797699+567699+568932(Top 31%)7031(Top 43%)7031(Top 376%)
21M21.00 mi1.00 mi9514+587637+627637+629203(Top 32%)7056(Top 43%)7056(Top 378%)
35K21.75 mi0.75 mi9484+307606+317606+319869(Top 34%)7412(Top 45%)7412(Top 397%)
23M23.00 mi1.25 mi9383+1017522+847522+849308(Top 32%)7043(Top 43%)7043(Top 377%)
24M24.00 mi1.00 mi9355+287484+387484+389446(Top 33%)7024(Top 43%)7024(Top 376%)
40K24.85 mi0.85 mi9399-447481+37481+311414(Top 39%)7896(Top 48%)7896(Top 423%)
25.2M25.20 mi0.35 mi9467-687504-237504-2312784(Top 44%)8470(Top 52%)8470(Top 453%)
FINISH26.22 mi1.02 mi9766-2997615-1117615-11116353(Top 56%)10144(Top 62%)10144(Top 543%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

9688

Males

7867

M50-54

7867

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

10252

Males

8186

M50-54

8186

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

9688

Males

7867

M50-54

7867

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

9588

Males

7717

M50-54

7717

20K→HALF

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

9535

Males

7747

M50-54

7747

HALF→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

9461

Males

7576

M50-54

7576

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

9117

Males

7244

M50-54

7244

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8932

Males

7031

M50-54

7031

20M→21M

20.0 - 21.0 mi

Top 32%
×8stories
+106ft-24ft

Overall

9203

Males

7056

M50-54

7056

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

9869

Males

7412

M50-54

7412

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

9308

Males

7043

M50-54

7043

23M→24M

23.0 - 24.0 mi

Top 33%
×6stories
+12ft-82ft

Overall

9446

Males

7024

M50-54

7024

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

11414

Males

7896

M50-54

7896

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12784

Males

8470

M50-54

8470

25.2M→FINISH

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

16353

Males

10144

M50-54

10144

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2008*
Passed By
1186
Net Change
+820
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10586
5K → 10K332144+187#10586#10399
10K → 15K33567+268#10399#10131
15K → 20K257*72+185#10131#9946
20K → HALF4222+20#9946#9926
HALF → 25K15962+97#9926#9829
25K → 30K27496+178#9829#9651
30K → 20M11435+79#9651#9572
20M → 21M11052+58#9572#9514
21M → 35K6434+30#9514#9484
35K → 23M15453+101#9484#9383
23M → 24M7143+28#9383#9355
24M → 40K5195-44#9355#9399
40K → 25.2M2290-68#9399#9467
25.2M → FINISH23321-299#9467#9766
TOTALS2008*1186+820

* 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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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing