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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Zongbei Cai

Bib: 33311 β€’M β€’Age: N/A

Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 29021
Top 33%
Gender (Male)
#0 / 16340
Top 46%
Age Group (M18-39)
#0 / 5723
Race Day Weather
51Β°/41Β°F
overcast clouds
Personalized for Zongbei

Your Race Performance Report is ready

See how your race unfolded, where your performance changed, and what to focus on next.

Personalized by MyRace AI
Preview insight
Your pace by distance
Fastest segment Β· 7:01/mi at mile 26.2

Your report includes

  • Race Overview
  • Pacing & Splits
  • Performance Analysis
  • Segment Analysis
  • Passing Analysis
  • Potential Focus Areas
One-time purchase Β· Instant access Β· Downloadable PDF Β· Shareable report

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
22:33
3.11 mi
Rank: #10673
Start β†’ 5K
22:33 | 7:16/mi
10K
44:47
6.21 mi
Rank: #10264 (+409)
5K β†’ 10K
22:14 | 7:10/mi
15K
1:07:16
9.32 mi
Rank: #10315 (-51)
10K β†’ 15K
22:29 | 7:15/mi
20K
1:29:53
12.43 mi
Rank: #10184 (+131)
15K β†’ 20K
22:37 | 7:17/mi
HALF
1:34:44
13.11 mi
Rank: #10133 (+51)
20K β†’ HALF
4:51 | 7:07/mi
25K
1:52:32
15.53 mi
Rank: #10102 (+31)
HALF β†’ 25K
17:48 | 7:21/mi
30K
2:16:01
18.64 mi
Rank: #10028 (+74)
25K β†’ 30K
23:29 | 7:34/mi
20M
2:26:14
20.00 mi
Rank: #9941 (+87)
30K β†’ 20M
10:13 | 7:32/mi
21M
2:34:16
21.00 mi
Rank: #9908 (+33)
20M β†’ 21M
8:02 | 8:02/mi
35K
2:39:43
21.75 mi
Rank: #9851 (+57)
21M β†’ 35K
5:27 | 7:18/mi
23M
2:49:12
23.00 mi
Rank: #9759 (+92)
35K β†’ 23M
9:29 | 7:35/mi
24M
2:56:41
24.00 mi
Rank: #9757 (+2)
23M β†’ 24M
7:29 | 7:29/mi
40K
3:03:04
24.85 mi
Rank: #9680 (+77)
24M β†’ 40K
6:23 | 7:28/mi
25.2M
3:05:47
25.20 mi
Rank: #9632 (+48)
40K β†’ 25.2M
2:43 | 7:53/mi
FINISH
3:12:56
26.22 mi
Rank: #9498 (+134)
25.2M β†’ FINISH
7:09 | 7:01/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:34:44
Pace7:14 /mi
2nd Half
Distance13.11 mi
Time1:38:12
Pace7:30 /mi
πŸ“ŠPositive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:5422:337:1622:33
7:16
-
10K
6.21 mi12:15:0844:477:1322:14
7:10
-0:06
15K
9.32 mi12:37:371:07:167:1422:29
7:15
+0:05
20K
12.43 mi13:00:141:29:537:1422:37
7:17
+0:02
HALF
13.11 mi13:05:051:34:447:144:51
7:07
-0:10
25K
15.53 mi13:22:531:52:327:1517:48
7:21
+0:14
30K
18.64 mi13:46:222:16:017:1823:29
7:34
+0:13
20M
20.00 mi13:56:352:26:147:1910:13
7:32
-0:02
21M
21.00 mi14:04:372:34:167:218:02
8:02
+0:30
35K
21.75 mi14:10:042:39:437:215:27
7:18
-0:44
23M
23.00 mi14:19:332:49:127:229:29
7:35
+0:17
24M
24.00 mi14:27:022:56:417:227:29
7:29
-0:06
40K
24.85 mi14:33:253:03:047:226:23
7:28
-0:01
25.2M
25.20 mi14:36:083:05:477:232:43
7:53
+0:25
FINISH
26.22 mi14:43:173:12:567:227:09
7:01
-0:52

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

7:01 /mi

Average Pace

7:22 /mi

Slowest Pace

8:02 /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

3:02:11

94% of race

Time at Steady Pace

10:45

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:21 /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 mi11:52:5422:337:1622:33
7:16
#10673
10K
6.21 mi12:15:0844:477:1322:14
7:10
#10264
15K
9.32 mi12:37:371:07:167:1422:29
7:15
#10315
20K
12.43 mi13:00:141:29:537:1422:37
7:17
#10184
HALF
13.11 mi13:05:051:34:447:144:51
7:07
#10133
25K
15.53 mi13:22:531:52:327:1517:48
7:21
#10102
30K
18.64 mi13:46:222:16:017:1823:29
7:34
#10028
20M
20.00 mi13:56:352:26:147:1910:13
7:32
#9941
21M
21.00 mi14:04:372:34:167:218:02
8:02
#9908
35K
21.75 mi14:10:042:39:437:215:27
7:18
#9851
23M
23.00 mi14:19:332:49:127:229:29
7:35
#9759
24M
24.00 mi14:27:022:56:417:227:29
7:29
#9757
40K
24.85 mi14:33:253:03:047:226:23
7:28
#9680
25.2M
25.20 mi14:36:083:05:477:232:43
7:53
#9632
FINISH
26.22 mi14:43:173:12:567:227:09
7:01
#9498
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi106738416841610426(Top 36%)8206(Top 50%)8206(Top 143%)
10K6.21 mi3.10 mi10264+4098198+2188198+2189854(Top 34%)7981(Top 49%)7981(Top 139%)
15K9.32 mi3.11 mi10315-518205-78205-710426(Top 36%)8206(Top 50%)8206(Top 143%)
20K12.43 mi3.11 mi10184+1318104+1018104+1019979(Top 34%)7912(Top 48%)7912(Top 138%)
HALF13.11 mi0.68 mi10133+518079+258079+259526(Top 33%)7738(Top 47%)7738(Top 135%)
25K15.53 mi2.42 mi10102+318032+478032+4710031(Top 35%)7854(Top 48%)7854(Top 137%)
30K18.64 mi3.11 mi10028+747943+897943+8910121(Top 35%)7764(Top 48%)7764(Top 136%)
20M20.00 mi1.36 mi9941+877873+707873+709259(Top 32%)7200(Top 44%)7200(Top 126%)
21M21.00 mi1.00 mi9908+337841+327841+3210082(Top 35%)7511(Top 46%)7511(Top 131%)
35K21.75 mi0.75 mi9851+577796+457796+459176(Top 32%)7054(Top 43%)7054(Top 123%)
23M23.00 mi1.25 mi9759+927716+807716+809407(Top 32%)7095(Top 43%)7095(Top 124%)
24M24.00 mi1.00 mi9757+27696+207696+209923(Top 34%)7253(Top 44%)7253(Top 127%)
40K24.85 mi0.85 mi9680+777628+687628+688591(Top 30%)6492(Top 40%)6492(Top 113%)
25.2M25.20 mi0.35 mi9632+487590+387590+387555(Top 26%)5886(Top 36%)5886(Top 103%)
FINISH26.22 mi1.02 mi9498+1347481+1097481+1097697(Top 27%)5896(Top 36%)5896(Top 103%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
Γ—21
+97ft-345ft

Overall

10426

Males

8206

M18-39

8206

5K→10K

3.1 - 6.2 mi

Top 34%
Γ—5
+79ft-138ft

Overall

9854

Males

7981

M18-39

7981

10K→15K

6.2 - 9.3 mi

Top 36%
Γ—3
+67ft-78ft

Overall

10426

Males

8206

M18-39

8206

15K→20K

9.3 - 12.4 mi

Top 34%
Γ—5
+106ft-86ft

Overall

9979

Males

7912

M18-39

7912

20K→HALF

12.4 - 13.1 mi

Top 33%
Γ—2
+19ft-37ft

Overall

9526

Males

7738

M18-39

7738

HALF→25K

13.1 - 15.5 mi

Top 35%
Γ—4
+66ft-88ft

Overall

10031

Males

7854

M18-39

7854

25K→30K

15.5 - 18.6 mi

Top 35%
Γ—9
+181ft-148ft

Overall

10121

Males

7764

M18-39

7764

30K→20M

18.6 - 20.0 mi

Top 32%
Γ—5
+64ft-50ft

Overall

9259

Males

7200

M18-39

7200

20M→21M

20.0 - 21.0 mi

Top 35%
Γ—8
+106ft-24ft

Overall

10082

Males

7511

M18-39

7511

21M→35K

21.0 - 21.8 mi

Top 32%
Γ—7
+17ft-86ft

Overall

9176

Males

7054

M18-39

7054

35K→23M

21.8 - 23.0 mi

Top 32%
Γ—5
+23ft-63ft

Overall

9407

Males

7095

M18-39

7095

23M→24M

23.0 - 24.0 mi

Top 34%
Γ—6
+12ft-82ft

Overall

9923

Males

7253

M18-39

7253

24M→40K

24.0 - 24.9 mi

Top 30%
Γ—1
+6ft-20ft

Overall

8591

Males

6492

M18-39

6492

40K→25.2M

24.9 - 25.2 mi

Top 26%
Γ—1
+13ft-16ft

Overall

7555

Males

5886

M18-39

5886

25.2M→FINISH

25.2 - 26.2 mi

Top 27%
Γ—2
+22ft-21ft

Overall

7697

Males

5896

M18-39

5896

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2092*
Passed By
917
Net Change
+1175
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#10673
5K β†’ 10K474*65+409#10673#10264
10K β†’ 15K149200-51#10264#10315
15K β†’ 20K233*102+131#10315#10184
20K β†’ HALF587+51#10184#10133
HALF β†’ 25K11988+31#10133#10102
25K β†’ 30K217*143+74#10102#10028
30K β†’ 20M13043+87#10028#9941
20M β†’ 21M8855+33#9941#9908
21M β†’ 35K8427+57#9908#9851
35K β†’ 23M15058+92#9851#9759
23M β†’ 24M7169+2#9759#9757
24M β†’ 40K10427+77#9757#9680
40K β†’ 25.2M557+48#9680#9632
25.2M β†’ FINISH16026+134#9632#9498
TOTALS2092*917+1175

* Includes athletes who did not complete a segment (DNF/DNQ).

πŸ“Š

Passing Analysis Visualizations

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

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace Lanes

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Activity Data

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