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BOSTON MARATHON 2025

Brian Chadwick

Bib: 1935•M

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 6%
Gender (Male)
#0 / 16105
Top 9%
Masters (Masters Men)
#0 / 10463
Top 2%
Division (M50-54)
#0 / 1996
Top 0.7%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:00
Rank: #3368
Start → 5K
20:00 | 6:26/mi
10K· 6.21 mi
39:36
Rank: #2863 (+505)
5K → 10K
19:36 | 6:19/mi
15K· 9.32 mi
59:02
Rank: #2600 (+263)
10K → 15K
19:26 | 6:15/mi
20K· 12.43 mi
1:18:31
Rank: #2355 (+245)
15K → 20K
19:29 | 6:16/mi
Half· 13.11 mi
1:22:48
Rank: #2352 (+3)
20K → Half
4:17 | 6:17/mi
25K· 15.53 mi
1:38:03
Rank: #2240 (+112)
Half → 25K
15:15 | 6:17/mi
30K· 18.64 mi
1:58:12
Rank: #2143 (+97)
25K → 30K
20:09 | 6:29/mi
20M
2:06:56
Rank: #2051 (+92)
30K → 20M
8:44 | 6:26/mi
21M
2:13:32
Rank: #1951 (+100)
20M → 21M
6:36 | 6:36/mi
35K· 21.75 mi
2:18:15
Rank: #1910 (+41)
21M → 35K
4:43 | 6:18/mi
23M
2:26:24
Rank: #1850 (+60)
35K → 23M
8:09 | 6:31/mi
24M
2:32:39
Rank: #1793 (+57)
23M → 24M
6:15 | 6:15/mi
40K· 24.85 mi
2:38:05
Rank: #1739 (+54)
24M → 40K
5:26 | 6:21/mi
25.2M
2:40:26
Rank: #1703 (+36)
40K → 25.2M
2:21 | 6:49/mi
Finish· 26.22 mi
2:46:29
Rank: #1609 (+94)
25.2M → Finish
6:03 | 5:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:48
Pace6:19 /mi
2nd Half
Distance13.11 mi
Time1:23:41
Pace6:23 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:4920:006:2620:00
6:26
-
10K
6.21 mi10:40:2539:366:2219:36
6:19
-0:07
15K
9.32 mi10:59:5159:026:2019:26
6:15
-0:04
20K
12.43 mi11:19:201:18:316:1919:29
6:16
+0:01
Half
13.11 mi11:23:371:22:486:194:17
6:17
+0:01
25K
15.53 mi11:38:521:38:036:1915:15
6:17
0:00
30K
18.64 mi11:59:011:58:126:2020:09
6:29
+0:12
20M
20.00 mi12:07:452:06:566:218:44
6:26
-0:03
21M
21.00 mi12:14:212:13:326:226:36
6:36
+0:10
35K
21.75 mi12:19:042:18:156:214:43
6:18
-0:18
23M
23.00 mi12:27:132:26:246:228:09
6:31
+0:13
24M
24.00 mi12:33:282:32:396:226:15
6:15
-0:16
40K
24.85 mi12:38:542:38:056:225:26
6:21
+0:06
25.2M
25.20 mi12:41:152:40:266:222:21
6:49
+0:28
Finish
26.22 mi12:47:182:46:296:216:03
5:56
-0:53

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

5:56 /mi

Average Pace

6:21 /mi

Slowest Pace

6:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:37:32

95% of race

Time at Steady Pace

8:57

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:21 /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 mi10:20:4920:006:2620:00
6:26
#3368
10K
6.21 mi10:40:2539:366:2219:36
6:19
#2863
15K
9.32 mi10:59:5159:026:2019:26
6:15
#2600
20K
12.43 mi11:19:201:18:316:1919:29
6:16
#2355
Half
13.11 mi11:23:371:22:486:194:17
6:17
#2352
25K
15.53 mi11:38:521:38:036:1915:15
6:17
#2240
30K
18.64 mi11:59:011:58:126:2020:09
6:29
#2143
20M
20.00 mi12:07:452:06:566:218:44
6:26
#2051
21M
21.00 mi12:14:212:13:326:226:36
6:36
#1951
35K
21.75 mi12:19:042:18:156:214:43
6:18
#1910
23M
23.00 mi12:27:132:26:246:228:09
6:31
#1850
24M
24.00 mi12:33:282:32:396:226:15
6:15
#1793
40K
24.85 mi12:38:542:38:056:225:26
6:21
#1739
25.2M
25.20 mi12:41:152:40:266:222:21
6:49
#1703
Finish
26.22 mi12:47:182:46:296:216:03
5:56
#1609
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi3368319931992125(Top 7%)2027(Top 13%)2027(Top 102%)
10K6.21 mi3.10 mi2863+5052727+4722727+4722475(Top 9%)2365(Top 15%)2365(Top 118%)
15K9.32 mi3.11 mi2600+2632479+2482479+2482125(Top 7%)2027(Top 13%)2027(Top 102%)
20K12.43 mi3.11 mi2355+2452248+2312248+2311897(Top 7%)1807(Top 11%)1807(Top 91%)
Half13.11 mi0.68 mi2352+32244+42244+42405(Top 8%)2302(Top 14%)2302(Top 115%)
25K15.53 mi2.42 mi2240+1122139+1052139+1051811(Top 6%)1721(Top 11%)1721(Top 86%)
30K18.64 mi3.11 mi2143+972042+972042+971914(Top 7%)1823(Top 11%)1823(Top 91%)
20M20.00 mi1.36 mi2051+921954+881954+881340(Top 5%)1267(Top 8%)1267(Top 63%)
21M21.00 mi1.00 mi1951+1001855+991855+99928(Top 3%)878(Top 5%)878(Top 44%)
35K21.75 mi0.75 mi1910+411814+411814+411644(Top 6%)1544(Top 10%)1544(Top 77%)
23M23.00 mi1.25 mi1850+601754+601754+601495(Top 5%)1405(Top 9%)1405(Top 70%)
24M24.00 mi1.00 mi1793+571698+561698+561174(Top 4%)1101(Top 7%)1101(Top 55%)
40K24.85 mi0.85 mi1739+541648+501648+501124(Top 4%)1053(Top 7%)1053(Top 53%)
25.2M25.20 mi0.35 mi1703+361614+341614+341044(Top 4%)962(Top 6%)962(Top 48%)
Finish26.22 mi1.02 mi1609+941523+911523+91790(Top 3%)744(Top 5%)744(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

2125

Males

2027

M50-54

2027

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2475

Males

2365

M50-54

2365

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

2125

Males

2027

M50-54

2027

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1897

Males

1807

M50-54

1807

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2405

Males

2302

M50-54

2302

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1811

Males

1721

M50-54

1721

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1914

Males

1823

M50-54

1823

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1340

Males

1267

M50-54

1267

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

928

Males

878

M50-54

878

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1644

Males

1544

M50-54

1544

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1495

Males

1405

M50-54

1405

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1174

Males

1101

M50-54

1101

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1124

Males

1053

M50-54

1053

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1044

Males

962

M50-54

962

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

790

Males

744

M50-54

744

Passing Analysis

Category:
Athletes Passed
1875
Passed By
116
Net Change
+1759
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3368
5K → 10K5149+505#3368#2863
10K → 15K2674+263#2863#2600
15K → 20K2527+245#2600#2355
20K → Half1310+3#2355#2352
Half → 25K12311+112#2352#2240
25K → 30K12932+97#2240#2143
30K → 20M964+92#2143#2051
20M → 21M1022+100#2051#1951
21M → 35K465+41#1951#1910
35K → 23M7414+60#1910#1850
23M → 24M647+57#1850#1793
24M → 40K6410+54#1793#1739
40K → 25.2M360+36#1739#1703
25.2M → Finish951+94#1703#1609
TOTALS1875116+1759
📊

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