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BOSTON MARATHON 2025

Brian Welch

Bib: 9151•M

DE

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 50%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:49
Rank: #8002
Start → 5K
21:49 | 7:01/mi
10K· 6.21 mi
43:50
Rank: #8304 (-302)
5K → 10K
22:01 | 7:05/mi
15K· 9.32 mi
1:05:46
Rank: #8167 (+137)
10K → 15K
21:56 | 7:04/mi
20K· 12.43 mi
1:29:52
Rank: #9270 (-1103)
15K → 20K
24:06 | 7:45/mi
Half· 13.11 mi
1:34:50
Rank: #9294 (-24)
20K → Half
4:58 | 7:17/mi
25K· 15.53 mi
1:56:55
Rank: #11556 (-2262)
Half → 25K
22:05 | 9:06/mi
30K· 18.64 mi
2:32:02
Rank: #15902 (-4346)
25K → 30K
35:07 | 11:18/mi
20M
2:43:32
Rank: #15671 (+231)
30K → 20M
11:30 | 8:28/mi
21M
2:52:07
Rank: #15359 (+312)
20M → 21M
8:35 | 8:35/mi
35K· 21.75 mi
2:57:48
Rank: #15117 (+242)
21M → 35K
5:41 | 7:36/mi
23M
3:07:59
Rank: #14826 (+291)
35K → 23M
10:11 | 8:08/mi
24M
3:15:54
Rank: #14632 (+194)
23M → 24M
7:55 | 7:55/mi
40K· 24.85 mi
3:22:45
Rank: #14438 (+194)
24M → 40K
6:51 | 8:01/mi
25.2M
3:25:35
Rank: #14311 (+127)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:33:13
Rank: #14098 (+213)
25.2M → Finish
7:38 | 7:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:50
Pace7:14 /mi
2nd Half
Distance13.11 mi
Time1:58:23
Pace9:02 /mi
📊Positive Split: 24.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:0121:497:0121:49
7:01
-
10K
6.21 mi11:09:0243:507:0322:01
7:05
+0:04
15K
9.32 mi11:30:581:05:467:0321:56
7:04
-0:01
20K
12.43 mi11:55:041:29:527:1424:06
7:45
+0:41
Half
13.11 mi12:00:021:34:507:144:58
7:17
-0:28
25K
15.53 mi12:22:071:56:557:3222:05
9:06
+1:49
30K
18.64 mi12:57:142:32:028:0935:07
11:18
+2:12
20M
20.00 mi13:08:442:43:328:1111:30
8:28
-2:50
21M
21.00 mi13:17:192:52:078:128:35
8:35
+0:07
35K
21.75 mi13:23:002:57:488:115:41
7:36
-0:59
23M
23.00 mi13:33:113:07:598:1010:11
8:08
+0:32
24M
24.00 mi13:41:063:15:548:107:55
7:55
-0:13
40K
24.85 mi13:47:573:22:458:096:51
8:01
+0:06
25.2M
25.20 mi13:50:473:25:358:092:50
8:13
+0:12
Finish
26.22 mi13:58:253:33:138:087:38
7:29
-0:44

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

7:01 /mi

Average Pace

8:08 /mi

Slowest Pace

11:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:10:44

33% of race

Time at Steady Pace

1:05:12

31% of race

Time at Slower Pace

1:17:17

36% of race

Average Pace: 8:08 /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 mi10:47:0121:497:0121:49
7:01
#8002
10K
6.21 mi11:09:0243:507:0322:01
7:05
#8304
15K
9.32 mi11:30:581:05:467:0321:56
7:04
#8167
20K
12.43 mi11:55:041:29:527:1424:06
7:45
#9270
Half
13.11 mi12:00:021:34:507:144:58
7:17
#9294
25K
15.53 mi12:22:071:56:557:3222:05
9:06
#11556
30K
18.64 mi12:57:142:32:028:0935:07
11:18
#15902
20M
20.00 mi13:08:442:43:328:1111:30
8:28
#15671
21M
21.00 mi13:17:192:52:078:128:35
8:35
#15359
35K
21.75 mi13:23:002:57:488:115:41
7:36
#15117
23M
23.00 mi13:33:113:07:598:1010:11
8:08
#14826
24M
24.00 mi13:41:063:15:548:107:55
7:55
#14632
40K
24.85 mi13:47:573:22:458:096:51
8:01
#14438
25.2M
25.20 mi13:50:473:25:358:092:50
8:13
#14311
Finish
26.22 mi13:58:253:33:138:087:38
7:29
#14098
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi8002700470048047(Top 28%)6977(Top 43%)6977(Top 311%)
10K6.21 mi3.10 mi8304-3027182-1787182-1788558(Top 30%)7342(Top 46%)7342(Top 327%)
15K9.32 mi3.11 mi8167+1377078+1047078+1048047(Top 28%)6977(Top 43%)6977(Top 311%)
20K12.43 mi3.11 mi9270-11037716-6387716-63812906(Top 45%)9380(Top 58%)9380(Top 417%)
Half13.11 mi0.68 mi9294-247725-97725-99820(Top 35%)7948(Top 49%)7948(Top 354%)
25K15.53 mi2.42 mi11556-22628846-11218846-112120377(Top 72%)12578(Top 78%)12578(Top 560%)
30K18.64 mi3.11 mi15902-434610688-184210688-184224553(Top 86%)14333(Top 89%)14333(Top 638%)
20M20.00 mi1.36 mi15671+23110546+14210546+14213531(Top 48%)9233(Top 57%)9233(Top 411%)
21M21.00 mi1.00 mi15359+31210389+15710389+15710989(Top 39%)7876(Top 49%)7876(Top 351%)
35K21.75 mi0.75 mi15117+24210267+12210267+1229329(Top 33%)7035(Top 44%)7035(Top 313%)
23M23.00 mi1.25 mi14826+29110119+14810119+14810947(Top 39%)7723(Top 48%)7723(Top 344%)
24M24.00 mi1.00 mi14632+1949998+1219998+12110669(Top 38%)7525(Top 47%)7525(Top 335%)
40K24.85 mi0.85 mi14438+1949881+1179881+11710294(Top 36%)7207(Top 45%)7207(Top 321%)
25.2M25.20 mi0.35 mi14311+1279813+689813+687167(Top 25%)5457(Top 34%)5457(Top 243%)
Finish26.22 mi1.02 mi14098+2139688+1259688+1259117(Top 32%)6511(Top 40%)6511(Top 290%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

8047

Males

6977

M40-44

6977

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

8558

Males

7342

M40-44

7342

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

8047

Males

6977

M40-44

6977

15K→20K

9.3 - 12.4 mi

Top 45%
×5stories
+106ft-86ft

Overall

12906

Males

9380

M40-44

9380

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9820

Males

7948

M40-44

7948

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

20377

Males

12578

M40-44

12578

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

24553

Males

14333

M40-44

14333

30K→20M

18.6 - 20.0 mi

Top 48%
×5stories
+64ft-50ft

Overall

13531

Males

9233

M40-44

9233

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10989

Males

7876

M40-44

7876

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

9329

Males

7035

M40-44

7035

35K→23M

21.8 - 23.0 mi

Top 39%
×5stories
+23ft-63ft

Overall

10947

Males

7723

M40-44

7723

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10669

Males

7525

M40-44

7525

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10294

Males

7207

M40-44

7207

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7167

Males

5457

M40-44

5457

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

9117

Males

6511

M40-44

6511

Passing Analysis

Category:
Athletes Passed
2237
Passed By
8331
Net Change
-6096
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8002
5K → 10K101403-302#8002#8304
10K → 15K21780+137#8304#8167
15K → 20K231126-1103#8167#9270
20K → Half2145-24#9270#9294
Half → 25K92269-2262#9294#11556
25K → 30K84354-4346#11556#15902
30K → 20M25423+231#15902#15671
20M → 21M3186+312#15671#15359
21M → 35K2431+242#15359#15117
35K → 23M2987+291#15117#14826
23M → 24M1984+194#14826#14632
24M → 40K1984+194#14632#14438
40K → 25.2M1270+127#14438#14311
25.2M → Finish2229+213#14311#14098
TOTALS22378331-6096
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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