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BOSTON MARATHON 2026

Ernest Tsui

Bib: 3207•M

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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Age Group (M18-39)
#0 / 5723
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
22:55
3.11 mi
Rank: #11728
Start → 5K
22:55 | 7:23/mi
10K
47:51
6.21 mi
Rank: #14644 (-2916)
5K → 10K
24:56 | 8:02/mi
15K
1:14:51
9.32 mi
Rank: #17286 (-2642)
10K → 15K
27:00 | 8:42/mi
20K
1:44:48
12.43 mi
Rank: #19543 (-2257)
15K → 20K
29:57 | 9:39/mi
HALF
1:50:56
13.11 mi
Rank: #19714 (-171)
20K → HALF
6:08 | 9:00/mi
25K
2:16:34
15.53 mi
Rank: #21277 (-1563)
HALF → 25K
25:38 | 10:35/mi
30K
2:51:54
18.64 mi
Rank: #22730 (-1453)
25K → 30K
35:20 | 11:23/mi
20M
3:12:57
20.00 mi
Rank: #23863 (-1133)
30K → 20M
21:03 | 15:30/mi
21M
3:25:00
21.00 mi
Rank: #23940 (-77)
20M → 21M
12:03 | 12:03/mi
35K
3:33:54
21.75 mi
Rank: #24108 (-168)
21M → 35K
8:54 | 11:54/mi
23M
3:51:34
23.00 mi
Rank: #24575 (-467)
35K → 23M
17:40 | 14:08/mi
24M
4:03:38
24.00 mi
Rank: #24707 (-132)
23M → 24M
12:04 | 12:04/mi
40K
4:14:21
24.85 mi
Rank: #24817 (-110)
24M → 40K
10:43 | 12:33/mi
25.2M
4:19:10
25.20 mi
Rank: #24869 (-52)
40K → 25.2M
4:49 | 13:59/mi
FINISH
4:30:51
26.22 mi
Rank: #24959 (-90)
25.2M → FINISH
11:41 | 11:28/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:50:56
Pace8:28 /mi
2nd Half
Distance13.11 mi
Time2:39:55
Pace12:12 /mi
📊Positive Split: 44.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:39:2322:557:2322:55
7:23
-
10K
6.21 mi11:04:1947:517:4324:56
8:02
+0:39
15K
9.32 mi11:31:191:14:518:0227:00
8:42
+0:40
20K
12.43 mi12:01:161:44:488:2629:57
9:39
+0:57
HALF
13.11 mi12:07:241:50:568:286:08
9:00
-0:39
25K
15.53 mi12:33:022:16:348:4825:38
10:35
+1:35
30K
18.64 mi13:08:222:51:549:1435:20
11:23
+0:48
20M
20.00 mi13:29:253:12:579:3921:03
15:30
+4:07
21M
21.00 mi13:41:283:25:009:4612:03
12:03
-3:27
35K
21.75 mi13:50:223:33:549:518:54
11:54
-0:09
23M
23.00 mi14:08:023:51:3410:0517:40
14:08
+2:14
24M
24.00 mi14:20:064:03:3810:1012:04
12:04
-2:04
40K
24.85 mi14:30:494:14:2110:1510:43
12:33
+0:29
25.2M
25.20 mi14:35:384:19:1010:184:49
13:59
+1:26
FINISH
26.22 mi14:47:194:30:5110:2111:41
11:28
-2:31

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

7:23 /mi

Average Pace

10:20 /mi

Slowest Pace

15:30 /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

1:50:56

41% of race

Time at Steady Pace

1:56:23

43% of race

Time at Slower Pace

43:32

16% of race

Average Pace: 10:20 /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 mi10:39:2322:557:2322:55
7:23
#11728
10K
6.21 mi11:04:1947:517:4324:56
8:02
#14644
15K
9.32 mi11:31:191:14:518:0227:00
8:42
#17286
20K
12.43 mi12:01:161:44:488:2629:57
9:39
#19543
HALF
13.11 mi12:07:241:50:568:286:08
9:00
#19714
25K
15.53 mi12:33:022:16:348:4825:38
10:35
#21277
30K
18.64 mi13:08:222:51:549:1435:20
11:23
#22730
20M
20.00 mi13:29:253:12:579:3921:03
15:30
#23863
21M
21.00 mi13:41:283:25:009:4612:03
12:03
#23940
35K
21.75 mi13:50:223:33:549:518:54
11:54
#24108
23M
23.00 mi14:08:023:51:3410:0517:40
14:08
#24575
24M
24.00 mi14:20:064:03:3810:1012:04
12:04
#24707
40K
24.85 mi14:30:494:14:2110:1510:43
12:33
#24817
25.2M
25.20 mi14:35:384:19:1010:184:49
13:59
#24869
FINISH
26.22 mi14:47:194:30:5110:2111:41
11:28
#24959
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 mi117288924892421139(Top 73%)12848(Top 79%)12848(Top 224%)
10K6.21 mi3.10 mi14644-291610109-118510109-118517429(Top 60%)11195(Top 69%)11195(Top 196%)
15K9.32 mi3.11 mi17286-264211120-101111120-101121139(Top 73%)12848(Top 79%)12848(Top 224%)
20K12.43 mi3.11 mi19543-225712095-97512095-97524141(Top 83%)14296(Top 87%)14296(Top 250%)
HALF13.11 mi0.68 mi19714-17112168-7312168-7322758(Top 78%)13636(Top 83%)13636(Top 238%)
25K15.53 mi2.42 mi21277-156312879-71112879-71125579(Top 88%)14925(Top 91%)14925(Top 261%)
30K18.64 mi3.11 mi22730-145313576-69713576-69725962(Top 89%)14988(Top 92%)14988(Top 262%)
20M20.00 mi1.36 mi23863-113314129-55314129-55328740(Top 99%)16201(Top 99%)16201(Top 283%)
21M21.00 mi1.00 mi23940-7714157-2814157-2825144(Top 87%)14473(Top 89%)14473(Top 253%)
35K21.75 mi0.75 mi24108-16814233-7614233-7626607(Top 92%)15152(Top 93%)15152(Top 265%)
23M23.00 mi1.25 mi24575-46714428-19514428-19528222(Top 97%)15916(Top 97%)15916(Top 278%)
24M24.00 mi1.00 mi24707-13214476-4814476-4826695(Top 92%)15133(Top 93%)15133(Top 264%)
40K24.85 mi0.85 mi24817-11014505-2914505-2926566(Top 92%)15041(Top 92%)15041(Top 263%)
25.2M25.20 mi0.35 mi24869-5214525-2014525-2027170(Top 94%)15355(Top 94%)15355(Top 268%)
FINISH26.22 mi1.02 mi24959-9014557-3214557-3226839(Top 92%)15177(Top 93%)15177(Top 265%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21
+97ft-345ft

Overall

21139

Males

12848

M18-39

12848

5K→10K

3.1 - 6.2 mi

Top 60%
×5
+79ft-138ft

Overall

17429

Males

11195

M18-39

11195

10K→15K

6.2 - 9.3 mi

Top 73%
×3
+67ft-78ft

Overall

21139

Males

12848

M18-39

12848

15K→20K

9.3 - 12.4 mi

Top 83%
×5
+106ft-86ft

Overall

24141

Males

14296

M18-39

14296

20K→HALF

12.4 - 13.1 mi

Top 78%
×2
+19ft-37ft

Overall

22758

Males

13636

M18-39

13636

HALF→25K

13.1 - 15.5 mi

Top 88%
×4
+66ft-88ft

Overall

25579

Males

14925

M18-39

14925

25K→30K

15.5 - 18.6 mi

Top 89%
×9
+181ft-148ft

Overall

25962

Males

14988

M18-39

14988

30K→20M

18.6 - 20.0 mi

Top 99%
×5
+64ft-50ft

Overall

28740

Males

16201

M18-39

16201

20M→21M

20.0 - 21.0 mi

Top 87%
×8
+106ft-24ft

Overall

25144

Males

14473

M18-39

14473

21M→35K

21.0 - 21.8 mi

Top 92%
×7
+17ft-86ft

Overall

26607

Males

15152

M18-39

15152

35K→23M

21.8 - 23.0 mi

Top 97%
×5
+23ft-63ft

Overall

28222

Males

15916

M18-39

15916

23M→24M

23.0 - 24.0 mi

Top 92%
×6
+12ft-82ft

Overall

26695

Males

15133

M18-39

15133

24M→40K

24.0 - 24.9 mi

Top 92%
×1
+6ft-20ft

Overall

26566

Males

15041

M18-39

15041

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1
+13ft-16ft

Overall

27170

Males

15355

M18-39

15355

25.2M→FINISH

25.2 - 26.2 mi

Top 92%
×2
+22ft-21ft

Overall

26839

Males

15177

M18-39

15177

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
164
Passed By
13395
Net Change
-13231
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11728
5K → 10K72923-2916#11728#14644
10K → 15K62648-2642#14644#17286
15K → 20K82265-2257#17286#19543
20K → HALF5176-171#19543#19714
HALF → 25K91572-1563#19714#21277
25K → 30K151468-1453#21277#22730
30K → 20M21135-1133#22730#23863
20M → 21M39116-77#23863#23940
21M → 35K12180-168#23940#24108
35K → 23M4471-467#24108#24575
23M → 24M12144-132#24575#24707
24M → 40K21131-110#24707#24817
40K → 25.2M658-52#24817#24869
25.2M → FINISH18108-90#24869#24959
TOTALS16413395-13231
📊

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