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BOSTON MARATHON 2023

Leo Hsia

Bib: 4225•M

CA

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

Start
0:00:00
Race begins
5K· 3.11 mi
20:28
Rank: #2794
Start → 5K
20:28 | 6:35/mi
10K· 6.21 mi
40:33
Rank: #2668 (+126)
5K → 10K
20:05 | 6:28/mi
15K· 9.32 mi
1:02:03
Rank: #3618 (-950)
10K → 15K
21:30 | 6:55/mi
20K· 12.43 mi
1:27:36
Rank: #6632 (-3014)
15K → 20K
25:33 | 8:13/mi
Half· 13.11 mi
1:32:58
Rank: #6887 (-255)
20K → Half
5:22 | 7:52/mi
25K· 15.53 mi
1:53:39
Rank: #8189 (-1302)
Half → 25K
20:41 | 8:32/mi
30K· 18.64 mi
2:21:15
Rank: #9795 (-1606)
25K → 30K
27:36 | 8:53/mi
20M
2:35:09
Rank: #10991 (-1196)
30K → 20M
13:54 | 10:14/mi
21M
2:45:10
Rank: #11560 (-569)
20M → 21M
10:01 | 10:01/mi
35K· 21.75 mi
2:52:37
Rank: #12136 (-576)
21M → 35K
7:27 | 9:57/mi
23M
3:03:57
Rank: #12431 (-295)
35K → 23M
11:20 | 9:03/mi
24M
3:13:42
Rank: #12916 (-485)
23M → 24M
9:45 | 9:45/mi
40K· 24.85 mi
3:22:23
Rank: #13318 (-402)
24M → 40K
8:41 | 10:09/mi
25.2M
3:25:59
Rank: #13438 (-120)
40K → 25.2M
3:36 | 10:26/mi
Finish· 26.22 mi
3:34:24
Rank: #13458 (-20)
25.2M → Finish
8:25 | 8:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:58
Pace7:05 /mi
2nd Half
Distance13.11 mi
Time2:01:26
Pace9:16 /mi
📊Positive Split: 30.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0820:286:3520:28
6:35
-
10K
6.21 mi10:42:1340:336:3220:05
6:28
-0:07
15K
9.32 mi11:03:431:02:036:3921:30
6:55
+0:27
20K
12.43 mi11:29:161:27:367:0325:33
8:13
+1:18
Half
13.11 mi11:34:381:32:587:055:22
7:52
-0:21
25K
15.53 mi11:55:191:53:397:1920:41
8:32
+0:40
30K
18.64 mi12:22:552:21:157:3527:36
8:53
+0:21
20M
20.00 mi12:36:492:35:097:4513:54
10:14
+1:21
21M
21.00 mi12:46:502:45:107:5210:01
10:01
-0:13
35K
21.75 mi12:54:172:52:377:567:27
9:57
-0:04
23M
23.00 mi13:05:373:03:578:0011:20
9:03
-0:54
24M
24.00 mi13:15:223:13:428:049:45
9:45
+0:42
40K
24.85 mi13:24:033:22:238:098:41
10:09
+0:24
25.2M
25.20 mi13:27:393:25:598:103:36
10:26
+0:17
Finish
26.22 mi13:36:043:34:248:118:25
8:16
-2:10

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

6:28 /mi

Average Pace

8:11 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:58

43% of race

Time at Steady Pace

1:08:02

32% of race

Time at Slower Pace

53:24

25% of race

Average Pace: 8:11 /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 mi10:22:0820:286:3520:28
6:35
#2794
10K
6.21 mi10:42:1340:336:3220:05
6:28
#2668
15K
9.32 mi11:03:431:02:036:3921:30
6:55
#3618
20K
12.43 mi11:29:161:27:367:0325:33
8:13
#6632
Half
13.11 mi11:34:381:32:587:055:22
7:52
#6887
25K
15.53 mi11:55:191:53:397:1920:41
8:32
#8189
30K
18.64 mi12:22:552:21:157:3527:36
8:53
#9795
20M
20.00 mi12:36:492:35:097:4513:54
10:14
#10991
21M
21.00 mi12:46:502:45:107:5210:01
10:01
#11560
35K
21.75 mi12:54:172:52:377:567:27
9:57
#12136
23M
23.00 mi13:05:373:03:578:0011:20
9:03
#12431
24M
24.00 mi13:15:223:13:428:049:45
9:45
#12916
40K
24.85 mi13:24:033:22:238:098:41
10:09
#13318
25.2M
25.20 mi13:27:393:25:598:103:36
10:26
#13438
Finish
26.22 mi13:36:043:34:248:118:25
8:16
#13458
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2794265926596087(Top 23%)5529(Top 36%)5529(Top 105%)
10K6.21 mi3.10 mi2668+1262547+1122547+1122597(Top 10%)2483(Top 16%)2483(Top 47%)
15K9.32 mi3.11 mi3618-9503420-8733420-8736087(Top 23%)5529(Top 36%)5529(Top 105%)
20K12.43 mi3.11 mi6632-30145960-25405960-254015107(Top 57%)10310(Top 68%)10310(Top 195%)
Half13.11 mi0.68 mi6887-2556167-2076167-20713267(Top 50%)9597(Top 63%)9597(Top 182%)
25K15.53 mi2.42 mi8189-13027032-8657032-86516374(Top 62%)10692(Top 70%)10692(Top 202%)
30K18.64 mi3.11 mi9795-16067983-9517983-95116551(Top 62%)10709(Top 71%)10709(Top 203%)
20M20.00 mi1.36 mi10991-11968552-5698552-56921083(Top 79%)12601(Top 83%)12601(Top 238%)
21M21.00 mi1.00 mi11560-5698779-2278779-22718068(Top 68%)11239(Top 74%)11239(Top 213%)
35K21.75 mi0.75 mi12136-5769008-2299008-22921142(Top 79%)12552(Top 83%)12552(Top 238%)
23M23.00 mi1.25 mi12431-2959124-1169124-11616288(Top 61%)10357(Top 68%)10357(Top 196%)
24M24.00 mi1.00 mi12916-4859304-1809304-18020038(Top 75%)12016(Top 79%)12016(Top 227%)
40K24.85 mi0.85 mi13318-4029448-1449448-14420364(Top 76%)12077(Top 80%)12077(Top 229%)
25.2M25.20 mi0.35 mi13438-1209482-349482-3418848(Top 71%)11383(Top 75%)11383(Top 215%)
Finish26.22 mi1.02 mi13458-209474+89474+813818(Top 52%)9159(Top 60%)9159(Top 173%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6087

Males

5529

M18-39

5529

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2597

Males

2483

M18-39

2483

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6087

Males

5529

M18-39

5529

15K→20K

9.3 - 12.4 mi

Top 57%
×5stories
+106ft-86ft

Overall

15107

Males

10310

M18-39

10310

20K→Half

12.4 - 13.1 mi

Top 50%
×2stories
+19ft-37ft

Overall

13267

Males

9597

M18-39

9597

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

16374

Males

10692

M18-39

10692

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

16551

Males

10709

M18-39

10709

30K→20M

18.6 - 20.0 mi

Top 79%
×5stories
+64ft-50ft

Overall

21083

Males

12601

M18-39

12601

20M→21M

20.0 - 21.0 mi

Top 68%
×8stories
+106ft-24ft

Overall

18068

Males

11239

M18-39

11239

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

21142

Males

12552

M18-39

12552

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

16288

Males

10357

M18-39

10357

23M→24M

23.0 - 24.0 mi

Top 75%
×6stories
+12ft-82ft

Overall

20038

Males

12016

M18-39

12016

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20364

Males

12077

M18-39

12077

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18848

Males

11383

M18-39

11383

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2stories
+22ft-21ft

Overall

13818

Males

9159

M18-39

9159

Passing Analysis

Category:
Athletes Passed
389
Passed By
11052
Net Change
-10664
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2794
5K → 10K232106+126#2794#2668
10K → 15K3953-950#2668#3618
15K → 20K03014-3014#3618#6632
20K → Half1256-255#6632#6887
Half → 25K31305-1302#6887#8189
25K → 30K101616-1606#8189#9795
30K → 20M31198-1196#9795#10991
20M → 21M11580-569#10991#11560
21M → 35K4580-576#11560#12136
35K → 23M26321-295#12136#12431
23M → 24M10495-485#12431#12916
24M → 40K10412-402#12916#13318
40K → 25.2M11131-120#13318#13438
25.2M → Finish6585-20#13438#13458
TOTALS38911052-10664
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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