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BOSTON MARATHON 2023

Tommy Tsay

Bib: 27719•M

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:16/mi
31:55
↑ 97↓ 3451.5%
10K· 6.21 mi
9:22/mi
1:01:02
↑ 79↓ 1380.4%
15K· 9.32 mi
9:45/mi
1:31:18
↑ 67↓ 78
20K· 12.43 mi
10:32/mi
2:04:03
↑ 106↓ 860.1%
Half· 13.11 mi
10:43/mi
2:11:22
↑ 19↓ 370.5%
25K· 15.53 mi
14:10/mi
2:45:43
↑ 66↓ 880.2%
30K· 18.64 mi
14:53/mi
3:31:56
↑ 181↓ 1480.2%
20M
15:57/mi
3:53:37
↑ 64↓ 500.2%
21M
17:01/mi
4:10:38
↑ 106↓ 241.6%
35K· 21.75 mi
15:13/mi
4:22:01
↑ 17↓ 861.7%
23M
15:38/mi
4:41:36
↑ 23↓ 630.6%
24M
13:47/mi
4:55:23
↓ 821.3%
40K· 24.85 mi
15:52/mi
5:08:57
↓ 200.3%
25.2M
16:58/mi
5:14:48
↑ 13↓ 160.2%
Finish· 26.22 mi
13:47/mi
5:28:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:22
Pace10:01 /mi
2nd Half
Distance13.11 mi
Time3:17:29
Pace15:04 /mi
📊Positive Split: 50.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:0431:5510:1631:55
10:16
-
10K
6.21 mi12:18:111:01:029:4929:07
9:22
-0:54
15K
9.32 mi12:48:271:31:189:4830:16
9:45
+0:23
20K
12.43 mi13:21:122:04:039:5932:45
10:32
+0:47
Half
13.11 mi13:28:312:11:2210:017:19
10:43
+0:11
25K
15.53 mi14:02:522:45:4310:4034:21
14:10
+3:27
30K
18.64 mi14:49:053:31:5611:2246:13
14:53
+0:43
20M
20.00 mi15:10:463:53:3711:4121:41
15:57
+1:04
21M
21.00 mi15:27:474:10:3811:5617:01
17:01
+1:04
35K
21.75 mi15:39:104:22:0112:0311:23
15:13
-1:48
23M
23.00 mi15:58:454:41:3612:1519:35
15:38
+0:25
24M
24.00 mi16:12:324:55:2312:1813:47
13:47
-1:51
40K
24.85 mi16:26:065:08:5712:2613:34
15:52
+2:05
25.2M
25.20 mi16:31:575:14:4812:305:51
16:58
+1:06
Finish
26.22 mi16:46:005:28:5112:3314:03
13:47
-3:11

Checkpoints & Pacing

📈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

9:22 /mi

Average Pace

12:33 /mi

Slowest Pace

17:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:22

40% of race

Time at Steady Pace

1:59:47

36% of race

Time at Slower Pace

1:17:42

24% of race

Average Pace: 12:33 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:49:0431:5510:1631:55
10:16
#24150
10K
6.21 mi12:18:111:01:029:4929:07
9:22
#23213
15K
9.32 mi12:48:271:31:189:4830:16
9:45
#23140
20K
12.43 mi13:21:122:04:039:5932:45
10:32
#23385
Half
13.11 mi13:28:312:11:2210:017:19
10:43
#23454
25K
15.53 mi14:02:522:45:4310:4034:21
14:10
#24489
30K
18.64 mi14:49:053:31:5611:2246:13
14:53
#25186
20M
20.00 mi15:10:463:53:3711:4121:41
15:57
#25415
21M
21.00 mi15:27:474:10:3811:5617:01
17:01
#25541
35K
21.75 mi15:39:104:22:0112:0311:23
15:13
#25614
23M
23.00 mi15:58:454:41:3612:1519:35
15:38
#25716
24M
24.00 mi16:12:324:55:2312:1813:47
13:47
#25734
40K
24.85 mi16:26:065:08:5712:2613:34
15:52
#25795
25.2M
25.20 mi16:31:575:14:4812:305:51
16:58
#25816
Finish
26.22 mi16:46:005:28:5112:3314:03
13:47
#25857
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi24150141681416822911(Top 86%)13598(Top 90%)13598(Top 257%)
10K6.21 mi3.10 mi23213+93713712+45613712+45622147(Top 83%)13227(Top 87%)13227(Top 250%)
15K9.32 mi3.11 mi23140+7313695+1713695+1722911(Top 86%)13598(Top 90%)13598(Top 257%)
20K12.43 mi3.11 mi23385-24513817-12213817-12223905(Top 90%)14038(Top 93%)14038(Top 266%)
Half13.11 mi0.68 mi23454-6913853-3613853-3624556(Top 92%)14294(Top 94%)14294(Top 270%)
25K15.53 mi2.42 mi24489-103514291-43814291-43826404(Top 99%)15075(Top 99%)15075(Top 285%)
30K18.64 mi3.11 mi25186-69714574-28314574-28326381(Top 99%)15055(Top 99%)15055(Top 285%)
20M20.00 mi1.36 mi25415-22914657-8314657-8326477(Top 99%)15096(Top 99%)15096(Top 286%)
21M21.00 mi1.00 mi25541-12614714-5714714-5726437(Top 99%)15079(Top 99%)15079(Top 285%)
35K21.75 mi0.75 mi25614-7314746-3214746-3226440(Top 99%)15074(Top 99%)15074(Top 285%)
23M23.00 mi1.25 mi25716-10214785-3914785-3926433(Top 99%)15069(Top 99%)15069(Top 285%)
24M24.00 mi1.00 mi25734-1814791-614791-625965(Top 98%)14797(Top 98%)14797(Top 280%)
40K24.85 mi0.85 mi25795-6114812-2114812-2126379(Top 99%)15025(Top 99%)15025(Top 284%)
25.2M25.20 mi0.35 mi25816-2114823-1114823-1126359(Top 99%)15007(Top 99%)15007(Top 284%)
Finish26.22 mi1.02 mi25857-4114841-1814841-1826298(Top 99%)14968(Top 99%)14968(Top 283%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

22911

Males

13598

M18-39

13598

5K→10K

3.1 - 6.2 mi

Top 83%
×5story building
+79ft-138ft

Overall

22147

Males

13227

M18-39

13227

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

22911

Males

13598

M18-39

13598

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

23905

Males

14038

M18-39

14038

20K→Half

12.4 - 13.1 mi

Top 92%
×2story building
+19ft-37ft

Overall

24556

Males

14294

M18-39

14294

Half→25K

13.1 - 15.5 mi

Top 99%
×4story building
+66ft-88ft

Overall

26404

Males

15075

M18-39

15075

25K→30K

15.5 - 18.6 mi

Top 99%
×9story building
+181ft-148ft

Overall

26381

Males

15055

M18-39

15055

30K→20M

18.6 - 20.0 mi

Top 99%
×5story building
+64ft-50ft

Overall

26477

Males

15096

M18-39

15096

20M→21M

20.0 - 21.0 mi

Top 99%
×8story building
+106ft-24ft

Overall

26437

Males

15079

M18-39

15079

21M→35K

21.0 - 21.8 mi

Top 99%
×7story building
+17ft-86ft

Overall

26440

Males

15074

M18-39

15074

35K→23M

21.8 - 23.0 mi

Top 99%
×5story building
+23ft-63ft

Overall

26433

Males

15069

M18-39

15069

23M→24M

23.0 - 24.0 mi

Top 98%
×6story building
+12ft-82ft

Overall

25965

Males

14797

M18-39

14797

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

26379

Males

15025

M18-39

15025

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

26359

Males

15007

M18-39

15007

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2story building
+22ft-21ft

Overall

26298

Males

14968

M18-39

14968

Passing Analysis

Category:
Athletes Passed
1234
Passed By
2941
Net Change
-1707
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24150
5K → 10K95316+937#24150#23213
10K → 15K185112+73#23213#23140
15K → 20K52297-245#23140#23385
20K → Half877-69#23385#23454
Half → 25K41039-1035#23454#24489
25K → 30K3700-697#24489#25186
30K → 20M0229-229#25186#25415
20M → 21M2128-126#25415#25541
21M → 35K881-73#25541#25614
35K → 23M3105-102#25614#25716
23M → 24M927-18#25716#25734
24M → 40K465-61#25734#25795
40K → 25.2M122-21#25795#25816
25.2M → Finish243-41#25816#25857
TOTALS12342941-1707
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing