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BOSTON MARATHON 2023

Bailey Choy

Bib: 2053•M

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 10%
Gender (Male)
#0 / 15176
Top 17%
Division (M18-39)
#0 / 5285
Top 38%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:24
Rank: #2649
Start → 5K
20:24 | 6:34/mi
10K· 6.21 mi
40:37
Rank: #2708 (-59)
5K → 10K
20:13 | 6:30/mi
15K· 9.32 mi
1:00:58
Rank: #2774 (-66)
10K → 15K
20:21 | 6:33/mi
20K· 12.43 mi
1:21:23
Rank: #2727 (+47)
15K → 20K
20:25 | 6:34/mi
Half· 13.11 mi
1:25:49
Rank: #2719 (+8)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:41:39
Rank: #2645 (+74)
Half → 25K
15:50 | 6:32/mi
30K· 18.64 mi
2:02:24
Rank: #2550 (+95)
25K → 30K
20:45 | 6:41/mi
20M
2:11:31
Rank: #2513 (+37)
30K → 20M
9:07 | 6:43/mi
21M
2:18:30
Rank: #2458 (+55)
20M → 21M
6:59 | 6:59/mi
35K· 21.75 mi
2:23:24
Rank: #2449 (+9)
21M → 35K
4:54 | 6:33/mi
23M
2:31:58
Rank: #2426 (+23)
35K → 23M
8:34 | 6:51/mi
24M
2:39:00
Rank: #2487 (-61)
23M → 24M
7:02 | 7:02/mi
40K· 24.85 mi
2:45:38
Rank: #2674 (-187)
24M → 40K
6:38 | 7:45/mi
25.2M
2:48:29
Rank: #2752 (-78)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
2:55:20
Rank: #2774 (-22)
25.2M → Finish
6:51 | 6:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:49
Pace6:33 /mi
2nd Half
Distance13.11 mi
Time1:29:31
Pace6:50 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:1420:246:3420:24
6:34
-
10K
6.21 mi10:41:2740:376:3220:13
6:30
-0:04
15K
9.32 mi11:01:481:00:586:3220:21
6:33
+0:03
20K
12.43 mi11:22:131:21:236:3320:25
6:34
+0:01
Half
13.11 mi11:26:391:25:496:334:26
6:30
-0:04
25K
15.53 mi11:42:291:41:396:3315:50
6:32
+0:02
30K
18.64 mi12:03:142:02:246:3420:45
6:41
+0:09
20M
20.00 mi12:12:212:11:316:359:07
6:43
+0:02
21M
21.00 mi12:19:202:18:306:366:59
6:59
+0:16
35K
21.75 mi12:24:142:23:246:364:54
6:33
-0:26
23M
23.00 mi12:32:482:31:586:368:34
6:51
+0:18
24M
24.00 mi12:39:502:39:006:387:02
7:02
+0:11
40K
24.85 mi12:46:282:45:386:406:38
7:45
+0:43
25.2M
25.20 mi12:49:192:48:296:412:51
8:16
+0:31
Finish
26.22 mi12:56:102:55:206:426:51
6:43
-1:33

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

6:30 /mi

Average Pace

6:42 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:31:50

87% of race

Time at Slower Pace

23:30

13% of race

Average Pace: 6:41 /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 mi10:21:1420:246:3420:24
6:34
#2649
10K
6.21 mi10:41:2740:376:3220:13
6:30
#2708
15K
9.32 mi11:01:481:00:586:3220:21
6:33
#2774
20K
12.43 mi11:22:131:21:236:3320:25
6:34
#2727
Half
13.11 mi11:26:391:25:496:334:26
6:30
#2719
25K
15.53 mi11:42:291:41:396:3315:50
6:32
#2645
30K
18.64 mi12:03:142:02:246:3420:45
6:41
#2550
20M
20.00 mi12:12:212:11:316:359:07
6:43
#2513
21M
21.00 mi12:19:202:18:306:366:59
6:59
#2458
35K
21.75 mi12:24:142:23:246:364:54
6:33
#2449
23M
23.00 mi12:32:482:31:586:368:34
6:51
#2426
24M
24.00 mi12:39:502:39:006:387:02
7:02
#2487
40K
24.85 mi12:46:282:45:386:406:38
7:45
#2674
25.2M
25.20 mi12:49:192:48:296:412:51
8:16
#2752
Finish
26.22 mi12:56:102:55:206:426:51
6:43
#2774
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2649252325232926(Top 11%)2797(Top 18%)2797(Top 53%)
10K6.21 mi3.10 mi2708-592584-612584-612828(Top 11%)2702(Top 18%)2702(Top 51%)
15K9.32 mi3.11 mi2774-662649-652649-652926(Top 11%)2797(Top 18%)2797(Top 53%)
20K12.43 mi3.11 mi2727+472606+432606+432675(Top 10%)2558(Top 17%)2558(Top 48%)
Half13.11 mi0.68 mi2719+82599+72599+72775(Top 10%)2659(Top 18%)2659(Top 50%)
25K15.53 mi2.42 mi2645+742528+712528+712335(Top 9%)2237(Top 15%)2237(Top 42%)
30K18.64 mi3.11 mi2550+952438+902438+902305(Top 9%)2199(Top 14%)2199(Top 42%)
20M20.00 mi1.36 mi2513+372404+342404+342328(Top 9%)2211(Top 15%)2211(Top 42%)
21M21.00 mi1.00 mi2458+552355+492355+492087(Top 8%)1973(Top 13%)1973(Top 37%)
35K21.75 mi0.75 mi2449+92345+102345+102691(Top 10%)2534(Top 17%)2534(Top 48%)
23M23.00 mi1.25 mi2426+232322+232322+232883(Top 11%)2693(Top 18%)2693(Top 51%)
24M24.00 mi1.00 mi2487-612379-572379-574809(Top 18%)4278(Top 28%)4278(Top 81%)
40K24.85 mi0.85 mi2674-1872552-1732552-1738313(Top 31%)6419(Top 42%)6419(Top 121%)
25.2M25.20 mi0.35 mi2752-782616-642616-647928(Top 30%)6088(Top 40%)6088(Top 115%)
Finish26.22 mi1.02 mi2774-222637-212637-213608(Top 14%)3222(Top 21%)3222(Top 61%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

2926

Males

2797

M18-39

2797

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2828

Males

2702

M18-39

2702

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

2926

Males

2797

M18-39

2797

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2675

Males

2558

M18-39

2558

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2775

Males

2659

M18-39

2659

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2335

Males

2237

M18-39

2237

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2305

Males

2199

M18-39

2199

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2328

Males

2211

M18-39

2211

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2087

Males

1973

M18-39

1973

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2691

Males

2534

M18-39

2534

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

2883

Males

2693

M18-39

2693

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4809

Males

4278

M18-39

4278

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8313

Males

6419

M18-39

6419

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7928

Males

6088

M18-39

6088

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3608

Males

3222

M18-39

3222

Passing Analysis

Category:
Athletes Passed
755
Passed By
880
Net Change
-125
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2649
5K → 10K125184-59#2649#2708
10K → 15K55121-66#2708#2774
15K → 20K9245+47#2774#2727
20K → Half2719+8#2727#2719
Half → 25K8713+74#2719#2645
25K → 30K12328+95#2645#2550
30K → 20M5821+37#2550#2513
20M → 21M7015+55#2513#2458
21M → 35K2819+9#2458#2449
35K → 23M4421+23#2449#2426
23M → 24M1071-61#2426#2487
24M → 40K7194-187#2487#2674
40K → 25.2M179-78#2674#2752
25.2M → Finish2850-22#2752#2774
TOTALS755880-125
📊

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