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BOSTON MARATHON 2023

James Buckley

Bib: 4090•M

RI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 3%
Gender (Male)
#0 / 15176
Top 6%
Division (M18-39)
#0 / 5285
Top 14%
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
6:41/mi
20:47
↑ 97↓ 3451.5%
10K· 6.21 mi
6:18/mi
40:20
↑ 79↓ 1380.4%
15K· 9.32 mi
6:11/mi
59:33
↑ 67↓ 78
20K· 12.43 mi
6:11/mi
1:18:47
↑ 106↓ 860.1%
Half· 13.11 mi
6:09/mi
1:22:59
↑ 19↓ 370.5%
25K· 15.53 mi
6:11/mi
1:37:59
↑ 66↓ 880.2%
30K· 18.64 mi
6:16/mi
1:57:27
↑ 181↓ 1480.2%
20M
6:12/mi
2:05:52
↑ 64↓ 500.2%
21M
6:27/mi
2:12:19
↑ 106↓ 241.6%
35K· 21.75 mi
5:52/mi
2:16:42
↑ 17↓ 861.7%
23M
6:07/mi
2:24:22
↑ 23↓ 630.6%
24M
5:56/mi
2:30:18
↓ 821.3%
40K· 24.85 mi
5:58/mi
2:35:24
↓ 200.3%
25.2M
6:29/mi
2:37:38
↑ 13↓ 160.2%
Finish· 26.22 mi
5:51/mi
2:43:36
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:22:59
Pace6:20 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:20:37
Pace6:09 /mi
📊Negative Split: 2.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5820:476:4120:47
6:41
-
10K
6.21 mi10:42:3140:206:2919:33
6:18
-0:23
15K
9.32 mi11:01:4459:336:2319:13
6:11
-0:07
20K
12.43 mi11:20:581:18:476:2019:14
6:11
0:00
Half
13.11 mi11:25:101:22:596:204:12
6:09
-0:02
25K
15.53 mi11:40:101:37:596:1815:00
6:11
+0:02
30K
18.64 mi11:59:381:57:276:1819:28
6:16
+0:05
20M
20.00 mi12:08:032:05:526:188:25
6:12
-0:04
21M
21.00 mi12:14:302:12:196:186:27
6:27
+0:15
35K
21.75 mi12:18:532:16:426:174:23
5:52
-0:35
23M
23.00 mi12:26:332:24:226:177:40
6:07
+0:15
24M
24.00 mi12:32:292:30:186:165:56
5:56
-0:11
40K
24.85 mi12:37:352:35:246:155:06
5:58
+0:02
25.2M
25.20 mi12:39:492:37:386:152:14
6:29
+0:31
Finish
26.22 mi12:45:472:43:366:155:58
5:51
-0:38

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

5:51 /mi

Average Pace

6:15 /mi

Slowest Pace

6:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:08

82% of race

Time at Steady Pace

29:28

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:14 /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 mi10:22:5820:476:4120:47
6:41
#3550
10K
6.21 mi10:42:3140:206:2919:33
6:18
#2440
15K
9.32 mi11:01:4459:336:2319:13
6:11
#1952
20K
12.43 mi11:20:581:18:476:2019:14
6:11
#1689
Half
13.11 mi11:25:101:22:596:204:12
6:09
#1667
25K
15.53 mi11:40:101:37:596:1815:00
6:11
#1522
30K
18.64 mi11:59:381:57:276:1819:28
6:16
#1340
20M
20.00 mi12:08:032:05:526:188:25
6:12
#1265
21M
21.00 mi12:14:302:12:196:186:27
6:27
#1190
35K
21.75 mi12:18:532:16:426:174:23
5:52
#1137
23M
23.00 mi12:26:332:24:226:177:40
6:07
#1076
24M
24.00 mi12:32:292:30:186:165:56
5:56
#1032
40K
24.85 mi12:37:352:35:246:155:06
5:58
#975
25.2M
25.20 mi12:39:492:37:386:152:14
6:29
#962
Finish
26.22 mi12:45:472:43:366:155:58
5:51
#911
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3550334333431191(Top 4%)1135(Top 7%)1135(Top 21%)
10K6.21 mi3.10 mi2440+11102330+10132330+10131734(Top 7%)1658(Top 11%)1658(Top 31%)
15K9.32 mi3.11 mi1952+4881868+4621868+4621191(Top 4%)1135(Top 7%)1135(Top 21%)
20K12.43 mi3.11 mi1689+2631617+2511617+2511033(Top 4%)983(Top 6%)983(Top 19%)
Half13.11 mi0.68 mi1667+221595+221595+221165(Top 4%)1114(Top 7%)1114(Top 21%)
25K15.53 mi2.42 mi1522+1451454+1411454+141963(Top 4%)914(Top 6%)914(Top 17%)
30K18.64 mi3.11 mi1340+1821279+1751279+175826(Top 3%)786(Top 5%)786(Top 15%)
20M20.00 mi1.36 mi1265+751208+711208+71643(Top 2%)606(Top 4%)606(Top 11%)
21M21.00 mi1.00 mi1190+751136+721136+72571(Top 2%)537(Top 4%)537(Top 10%)
35K21.75 mi0.75 mi1137+531084+521084+52457(Top 2%)423(Top 3%)423(Top 8%)
23M23.00 mi1.25 mi1076+611024+601024+60497(Top 2%)466(Top 3%)466(Top 9%)
24M24.00 mi1.00 mi1032+44982+42982+42440(Top 2%)413(Top 3%)413(Top 8%)
40K24.85 mi0.85 mi975+57926+56926+56308(Top 1%)285(Top 2%)285(Top 5%)
25.2M25.20 mi0.35 mi962+13913+13913+13471(Top 2%)445(Top 3%)445(Top 8%)
Finish26.22 mi1.02 mi911+51864+49864+49465(Top 2%)442(Top 3%)442(Top 8%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21story building
+97ft-345ft

Overall

1191

Males

1135

M18-39

1135

5K→10K

3.1 - 6.2 mi

Top 7%
×5story building
+79ft-138ft

Overall

1734

Males

1658

M18-39

1658

10K→15K

6.2 - 9.3 mi

Top 4%
×3story building
+67ft-78ft

Overall

1191

Males

1135

M18-39

1135

15K→20K

9.3 - 12.4 mi

Top 4%
×5story building
+106ft-86ft

Overall

1033

Males

983

M18-39

983

20K→Half

12.4 - 13.1 mi

Top 4%
×2story building
+19ft-37ft

Overall

1165

Males

1114

M18-39

1114

Half→25K

13.1 - 15.5 mi

Top 4%
×4story building
+66ft-88ft

Overall

963

Males

914

M18-39

914

25K→30K

15.5 - 18.6 mi

Top 3%
×9story building
+181ft-148ft

Overall

826

Males

786

M18-39

786

30K→20M

18.6 - 20.0 mi

Top 2%
×5story building
+64ft-50ft

Overall

643

Males

606

M18-39

606

20M→21M

20.0 - 21.0 mi

Top 2%
×8story building
+106ft-24ft

Overall

571

Males

537

M18-39

537

21M→35K

21.0 - 21.8 mi

Top 2%
×7story building
+17ft-86ft

Overall

457

Males

423

M18-39

423

35K→23M

21.8 - 23.0 mi

Top 2%
×5story building
+23ft-63ft

Overall

497

Males

466

M18-39

466

23M→24M

23.0 - 24.0 mi

Top 2%
×6story building
+12ft-82ft

Overall

440

Males

413

M18-39

413

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

308

Males

285

M18-39

285

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

471

Males

445

M18-39

445

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2story building
+22ft-21ft

Overall

465

Males

442

M18-39

442

Passing Analysis

Category:
Athletes Passed
2643
Passed By
4
Net Change
+2639
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3550
5K → 10K11100+1110#3550#2440
10K → 15K4880+488#2440#1952
15K → 20K2630+263#1952#1689
20K → Half220+22#1689#1667
Half → 25K1461+145#1667#1522
25K → 30K1820+182#1522#1340
30K → 20M761+75#1340#1265
20M → 21M761+75#1265#1190
21M → 35K530+53#1190#1137
35K → 23M621+61#1137#1076
23M → 24M440+44#1076#1032
24M → 40K570+57#1032#975
40K → 25.2M130+13#975#962
25.2M → Finish510+51#962#911
TOTALS26434+2639
📊

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