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BOSTON MARATHON 2025

Justin Walsh

Bib: 29248•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Division (M18-39)
#0 / 5642
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:41
Rank: #2656
Start → 5K
19:41 | 6:20/mi
10K· 6.21 mi
38:18
Rank: #1692 (+964)
5K → 10K
18:37 | 6:00/mi
15K· 9.32 mi
57:40
Rank: #1800 (-108)
10K → 15K
19:22 | 6:14/mi
20K· 12.43 mi
1:17:16
Rank: #1835 (-35)
15K → 20K
19:36 | 6:19/mi
Half· 13.11 mi
1:21:28
Rank: #1835
20K → Half
4:12 | 6:09/mi
25K· 15.53 mi
1:36:36
Rank: #1783 (+52)
Half → 25K
15:08 | 6:14/mi
30K· 18.64 mi
1:57:17
Rank: #1901 (-118)
25K → 30K
20:41 | 6:39/mi
20M
2:06:19
Rank: #1911 (-10)
30K → 20M
9:02 | 6:39/mi
21M
2:13:25
Rank: #1928 (-17)
20M → 21M
7:06 | 7:06/mi
35K· 21.75 mi
2:18:17
Rank: #1918 (+10)
21M → 35K
4:52 | 6:30/mi
23M
2:27:04
Rank: #1997 (-79)
35K → 23M
8:47 | 7:01/mi
24M
2:33:59
Rank: #2041 (-44)
23M → 24M
6:55 | 6:55/mi
40K· 24.85 mi
2:39:57
Rank: #2068 (-27)
24M → 40K
5:58 | 6:59/mi
25.2M
2:42:30
Rank: #2084 (-16)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:49:06
Rank: #2096 (-12)
25.2M → Finish
6:36 | 6:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:28
Pace6:13 /mi
2nd Half
Distance13.11 mi
Time1:27:38
Pace6:41 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:37:2019:416:2019:41
6:20
-
10K
6.21 mi11:55:5738:186:1018:37
6:00
-0:20
15K
9.32 mi12:15:1957:406:1119:22
6:14
+0:14
20K
12.43 mi12:34:551:17:166:1319:36
6:19
+0:05
Half
13.11 mi12:39:071:21:286:134:12
6:09
-0:10
25K
15.53 mi12:54:151:36:366:1315:08
6:14
+0:05
30K
18.64 mi13:14:561:57:176:1720:41
6:39
+0:25
20M
20.00 mi13:23:582:06:196:199:02
6:39
0:00
21M
21.00 mi13:31:042:13:256:217:06
7:06
+0:27
35K
21.75 mi13:35:562:18:176:224:52
6:30
-0:36
23M
23.00 mi13:44:432:27:046:248:47
7:01
+0:31
24M
24.00 mi13:51:382:33:596:256:55
6:55
-0:06
40K
24.85 mi13:57:362:39:576:265:58
6:59
+0:04
25.2M
25.20 mi14:00:092:42:306:272:33
7:24
+0:25
Finish
26.22 mi14:06:452:49:066:276:36
6:29
-0:55

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

6:00 /mi

Average Pace

6:27 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

57:19

34% of race

Time at Steady Pace

1:20:28

48% of race

Time at Slower Pace

31:19

19% of race

Average Pace: 6:27 /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 mi11:37:2019:416:2019:41
6:20
#2656
10K
6.21 mi11:55:5738:186:1018:37
6:00
#1692
15K
9.32 mi12:15:1957:406:1119:22
6:14
#1800
20K
12.43 mi12:34:551:17:166:1319:36
6:19
#1835
Half
13.11 mi12:39:071:21:286:134:12
6:09
#1835
25K
15.53 mi12:54:151:36:366:1315:08
6:14
#1783
30K
18.64 mi13:14:561:57:176:1720:41
6:39
#1901
20M
20.00 mi13:23:582:06:196:199:02
6:39
#1911
21M
21.00 mi13:31:042:13:256:217:06
7:06
#1928
35K
21.75 mi13:35:562:18:176:224:52
6:30
#1918
23M
23.00 mi13:44:432:27:046:248:47
7:01
#1997
24M
24.00 mi13:51:382:33:596:256:55
6:55
#2041
40K
24.85 mi13:57:362:39:576:265:58
6:59
#2068
25.2M
25.20 mi14:00:092:42:306:272:33
7:24
#2084
Finish
26.22 mi14:06:452:49:066:276:36
6:29
#2096
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2656253125312001(Top 7%)1905(Top 12%)1905(Top 34%)
10K6.21 mi3.10 mi1692+9641610+9211610+9211083(Top 4%)1021(Top 6%)1021(Top 18%)
15K9.32 mi3.11 mi1800-1081712-1021712-1022001(Top 7%)1905(Top 12%)1905(Top 34%)
20K12.43 mi3.11 mi1835-351746-341746-342050(Top 7%)1954(Top 12%)1954(Top 35%)
Half13.11 mi0.68 mi1835174617461757(Top 6%)1673(Top 10%)1673(Top 30%)
25K15.53 mi2.42 mi1783+521695+511695+511619(Top 6%)1539(Top 10%)1539(Top 27%)
30K18.64 mi3.11 mi1901-1181811-1161811-1162658(Top 9%)2515(Top 16%)2515(Top 45%)
20M20.00 mi1.36 mi1911-101818-71818-72204(Top 8%)2082(Top 13%)2082(Top 37%)
21M21.00 mi1.00 mi1928-171832-141832-142653(Top 9%)2463(Top 15%)2463(Top 44%)
35K21.75 mi0.75 mi1918+101822+101822+102451(Top 9%)2284(Top 14%)2284(Top 40%)
23M23.00 mi1.25 mi1997-791897-751897-753801(Top 13%)3414(Top 21%)3414(Top 61%)
24M24.00 mi1.00 mi2041-441938-411938-414135(Top 15%)3636(Top 23%)3636(Top 64%)
40K24.85 mi0.85 mi2068-271963-251963-253724(Top 13%)3269(Top 20%)3269(Top 58%)
25.2M25.20 mi0.35 mi2084-161978-151978-152860(Top 10%)2539(Top 16%)2539(Top 45%)
Finish26.22 mi1.02 mi2096-121988-101988-102681(Top 9%)2411(Top 15%)2411(Top 43%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

2001

Males

1905

M18-39

1905

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1083

Males

1021

M18-39

1021

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

2001

Males

1905

M18-39

1905

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

2050

Males

1954

M18-39

1954

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1757

Males

1673

M18-39

1673

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1619

Males

1539

M18-39

1539

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2658

Males

2515

M18-39

2515

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2204

Males

2082

M18-39

2082

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2653

Males

2463

M18-39

2463

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2451

Males

2284

M18-39

2284

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3801

Males

3414

M18-39

3414

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4135

Males

3636

M18-39

3636

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3724

Males

3269

M18-39

3269

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2860

Males

2539

M18-39

2539

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2681

Males

2411

M18-39

2411

Passing Analysis

Category:
Athletes Passed
1378
Passed By
818
Net Change
+560
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2656
5K → 10K9640+964#2656#1692
10K → 15K30138-108#1692#1800
15K → 20K5085-35#1800#1835
20K → Half660#1835#1835
Half → 25K7725+52#1835#1783
25K → 30K48166-118#1783#1901
30K → 20M3444-10#1901#1911
20M → 21M2946-17#1911#1928
21M → 35K3222+10#1928#1918
35K → 23M25104-79#1918#1997
23M → 24M2367-44#1997#2041
24M → 40K3158-27#2041#2068
40K → 25.2M622-16#2068#2084
25.2M → Finish2335-12#2084#2096
TOTALS1378818+560
📊

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