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BOSTON MARATHON 2023

Brian Walsh

Bib: 4441•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 15%
Division (M18-39)
#0 / 5285
Top 34%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:58
Rank: #4093
Start → 5K
20:58 | 6:45/mi
10K· 6.21 mi
41:52
Rank: #4343 (-250)
5K → 10K
20:54 | 6:44/mi
15K· 9.32 mi
1:02:22
Rank: #3922 (+421)
10K → 15K
20:30 | 6:36/mi
20K· 12.43 mi
1:22:54
Rank: #3605 (+317)
15K → 20K
20:32 | 6:37/mi
Half· 13.11 mi
1:27:22
Rank: #3565 (+40)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:43:22
Rank: #3386 (+179)
Half → 25K
16:00 | 6:36/mi
30K· 18.64 mi
2:04:07
Rank: #3095 (+291)
25K → 30K
20:45 | 6:41/mi
20M
2:13:05
Rank: #2965 (+130)
30K → 20M
8:58 | 6:36/mi
21M
2:19:59
Rank: #2849 (+116)
20M → 21M
6:54 | 6:54/mi
35K· 21.75 mi
2:24:41
Rank: #2765 (+84)
21M → 35K
4:42 | 6:17/mi
23M
2:33:08
Rank: #2715 (+50)
35K → 23M
8:27 | 6:45/mi
24M
2:39:32
Rank: #2618 (+97)
23M → 24M
6:24 | 6:24/mi
40K· 24.85 mi
2:45:09
Rank: #2562 (+56)
24M → 40K
5:37 | 6:34/mi
25.2M
2:47:32
Rank: #2528 (+34)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:53:52
Rank: #2443 (+85)
25.2M → Finish
6:20 | 6:13/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:27:22
Pace6:40 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:26:30
Pace6:36 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2720:586:4520:58
6:45
-
10K
6.21 mi10:44:2141:526:4420:54
6:44
-0:01
15K
9.32 mi11:04:511:02:226:4120:30
6:36
-0:08
20K
12.43 mi11:25:231:22:546:4020:32
6:37
+0:01
Half
13.11 mi11:29:511:27:226:404:28
6:33
-0:04
25K
15.53 mi11:45:511:43:226:3916:00
6:36
+0:03
30K
18.64 mi12:06:362:04:076:3920:45
6:41
+0:05
20M
20.00 mi12:15:342:13:056:398:58
6:36
-0:05
21M
21.00 mi12:22:282:19:596:406:54
6:54
+0:18
35K
21.75 mi12:27:102:24:416:394:42
6:17
-0:37
23M
23.00 mi12:35:372:33:086:398:27
6:45
+0:28
24M
24.00 mi12:42:012:39:326:396:24
6:24
-0:21
40K
24.85 mi12:47:382:45:096:395:37
6:34
+0:10
25.2M
25.20 mi12:50:012:47:326:392:23
6:55
+0:21
Finish
26.22 mi12:56:212:53:526:386:20
6:13
-0:42

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

6:13 /mi

Average Pace

6:38 /mi

Slowest Pace

6:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:35

95% of race

Time at Steady Pace

9:17

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:38 /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 mi10:23:2720:586:4520:58
6:45
#4093
10K
6.21 mi10:44:2141:526:4420:54
6:44
#4343
15K
9.32 mi11:04:511:02:226:4120:30
6:36
#3922
20K
12.43 mi11:25:231:22:546:4020:32
6:37
#3605
Half
13.11 mi11:29:511:27:226:404:28
6:33
#3565
25K
15.53 mi11:45:511:43:226:3916:00
6:36
#3386
30K
18.64 mi12:06:362:04:076:3920:45
6:41
#3095
20M
20.00 mi12:15:342:13:056:398:58
6:36
#2965
21M
21.00 mi12:22:282:19:596:406:54
6:54
#2849
35K
21.75 mi12:27:102:24:416:394:42
6:17
#2765
23M
23.00 mi12:35:372:33:086:398:27
6:45
#2715
24M
24.00 mi12:42:012:39:326:396:24
6:24
#2618
40K
24.85 mi12:47:382:45:096:395:37
6:34
#2562
25.2M
25.20 mi12:50:012:47:326:392:23
6:55
#2528
Finish
26.22 mi12:56:212:53:526:386:20
6:13
#2443
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4093383838383262(Top 12%)3097(Top 20%)3097(Top 59%)
10K6.21 mi3.10 mi4343-2504067-2294067-2294589(Top 17%)4277(Top 28%)4277(Top 81%)
15K9.32 mi3.11 mi3922+4213692+3753692+3753262(Top 12%)3097(Top 20%)3097(Top 59%)
20K12.43 mi3.11 mi3605+3173412+2803412+2802906(Top 11%)2772(Top 18%)2772(Top 52%)
Half13.11 mi0.68 mi3565+403375+373375+373030(Top 11%)2895(Top 19%)2895(Top 55%)
25K15.53 mi2.42 mi3386+1793217+1583217+1582692(Top 10%)2576(Top 17%)2576(Top 49%)
30K18.64 mi3.11 mi3095+2912949+2682949+2682304(Top 9%)2198(Top 14%)2198(Top 42%)
20M20.00 mi1.36 mi2965+1302830+1192830+1191867(Top 7%)1780(Top 12%)1780(Top 34%)
21M21.00 mi1.00 mi2849+1162723+1072723+1071771(Top 7%)1684(Top 11%)1684(Top 32%)
35K21.75 mi0.75 mi2765+842643+802643+801539(Top 6%)1463(Top 10%)1463(Top 28%)
23M23.00 mi1.25 mi2715+502594+492594+492379(Top 9%)2236(Top 15%)2236(Top 42%)
24M24.00 mi1.00 mi2618+972502+922502+921685(Top 6%)1593(Top 10%)1593(Top 30%)
40K24.85 mi0.85 mi2562+562446+562446+561800(Top 7%)1695(Top 11%)1695(Top 32%)
25.2M25.20 mi0.35 mi2528+342412+342412+341491(Top 6%)1408(Top 9%)1408(Top 27%)
Finish26.22 mi1.02 mi2443+852334+782334+781332(Top 5%)1262(Top 8%)1262(Top 24%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3262

Males

3097

M18-39

3097

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4589

Males

4277

M18-39

4277

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3262

Males

3097

M18-39

3097

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

2906

Males

2772

M18-39

2772

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3030

Males

2895

M18-39

2895

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2692

Males

2576

M18-39

2576

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2304

Males

2198

M18-39

2198

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1867

Males

1780

M18-39

1780

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1771

Males

1684

M18-39

1684

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1539

Males

1463

M18-39

1463

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2379

Males

2236

M18-39

2236

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1685

Males

1593

M18-39

1593

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1800

Males

1695

M18-39

1695

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1491

Males

1408

M18-39

1408

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1332

Males

1262

M18-39

1262

Passing Analysis

Category:
Athletes Passed
2126
Passed By
476
Net Change
+1650
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4093
5K → 10K127377-250#4093#4343
10K → 15K43211+421#4343#3922
15K → 20K3247+317#3922#3605
20K → Half444+40#3605#3565
Half → 25K1867+179#3565#3386
25K → 30K2998+291#3386#3095
30K → 20M1322+130#3095#2965
20M → 21M1171+116#2965#2849
21M → 35K884+84#2849#2765
35K → 23M7727+50#2765#2715
23M → 24M1069+97#2715#2618
24M → 40K626+56#2618#2562
40K → 25.2M395+34#2562#2528
25.2M → Finish938+85#2528#2443
TOTALS2126476+1650
📊

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