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BOSTON MARATHON 2025

Christopher Welch

Bib: 32419•M

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:23
Rank: #24098
Start → 5K
9:27/mi
29:23 split
10K· 6.21 mi
1:00:32
Rank: #24841 (-743)
5K → 10K
10:02/mi
31:09 split
15K· 9.32 mi
1:29:52
Rank: #24417 (+424)
10K → 15K
9:26/mi
29:20 split
20K· 12.43 mi
1:59:20
Rank: #24019 (+398)
15K → 20K
9:29/mi
29:28 split
Half· 13.11 mi
2:05:37
Rank: #23947 (+72)
20K → Half
9:13/mi
6:17 split
25K· 15.53 mi
2:29:21
Rank: #23730 (+217)
Half → 25K
9:47/mi
23:44 split
30K· 18.64 mi
3:04:10
Rank: #23888 (-158)
25K → 30K
11:12/mi
34:49 split
20M
3:18:37
Rank: #23820 (+68)
30K → 20M
10:38/mi
14:27 split
21M
3:31:19
Rank: #23893 (-73)
20M → 21M
12:42/mi
12:42 split
35K· 21.75 mi
3:38:37
Rank: #23790 (+103)
21M → 35K
9:45/mi
7:18 split
23M
3:51:55
Rank: #23704 (+86)
35K → 23M
10:37/mi
13:18 split
24M
4:02:27
Rank: #23675 (+29)
23M → 24M
10:32/mi
10:32 split
40K· 24.85 mi
4:11:38
Rank: #23644 (+31)
24M → 40K
10:44/mi
9:11 split
25.2M
4:16:02
Rank: #23668 (-24)
40K → 25.2M
12:46/mi
4:24 split
Finish· 26.22 mi
4:25:27
Rank: #23539 (+129)
25.2M → Finish
9:14/mi
9:25 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:37
Pace9:35 /mi
2nd Half
Distance13.11 mi
Time2:19:50
Pace10:40 /mi
📊Positive Split: 11.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:5429:239:2729:23
9:27
-
10K
6.21 mi12:25:031:00:329:4531:09
10:02
+0:35
15K
9.32 mi12:54:231:29:529:3929:20
9:26
-0:36
20K
12.43 mi13:23:511:59:209:3629:28
9:29
+0:03
Half
13.11 mi13:30:082:05:379:356:17
9:13
-0:16
25K
15.53 mi13:53:522:29:219:3723:44
9:47
+0:34
30K
18.64 mi14:28:413:04:109:5334:49
11:12
+1:25
20M
20.00 mi14:43:083:18:379:5614:27
10:38
-0:34
21M
21.00 mi14:55:503:31:1910:0412:42
12:42
+2:04
35K
21.75 mi15:03:083:38:3710:037:18
9:45
-2:57
23M
23.00 mi15:16:263:51:5510:0513:18
10:37
+0:52
24M
24.00 mi15:26:584:02:2710:0610:32
10:32
-0:05
40K
24.85 mi15:36:094:11:3810:079:11
10:44
+0:12
25.2M
25.20 mi15:40:334:16:0210:104:24
12:46
+2:02
Finish
26.22 mi15:49:584:25:2710:089:25
9:14
-3:32

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

9:13 /mi

Average Pace

10:08 /mi

Slowest Pace

12:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:53

39% of race

Time at Steady Pace

1:12:43

27% of race

Time at Slower Pace

1:28:51

33% of race

Average Pace: 10:07 /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 mi11:53:5429:239:2729:23
9:27
#24098
10K
6.21 mi12:25:031:00:329:4531:09
10:02
#24841
15K
9.32 mi12:54:231:29:529:3929:20
9:26
#24417
20K
12.43 mi13:23:511:59:209:3629:28
9:29
#24019
Half
13.11 mi13:30:082:05:379:356:17
9:13
#23947
25K
15.53 mi13:53:522:29:219:3723:44
9:47
#23730
30K
18.64 mi14:28:413:04:109:5334:49
11:12
#23888
20M
20.00 mi14:43:083:18:379:5614:27
10:38
#23820
21M
21.00 mi14:55:503:31:1910:0412:42
12:42
#23893
35K
21.75 mi15:03:083:38:3710:037:18
9:45
#23790
23M
23.00 mi15:16:263:51:5510:0513:18
10:37
#23704
24M
24.00 mi15:26:584:02:2710:0610:32
10:32
#23675
40K
24.85 mi15:36:094:11:3810:079:11
10:44
#23644
25.2M
25.20 mi15:40:334:16:0210:104:24
12:46
#23668
Finish
26.22 mi15:49:584:25:2710:089:25
9:14
#23539
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi24098142881428823575(Top 83%)14094(Top 88%)14094(Top 250%)
10K6.21 mi3.10 mi24841-74314632-34414632-34425380(Top 89%)14867(Top 92%)14867(Top 264%)
15K9.32 mi3.11 mi24417+42414441+19114441+19123575(Top 83%)14094(Top 88%)14094(Top 250%)
20K12.43 mi3.11 mi24019+39814253+18814253+18822847(Top 80%)13724(Top 85%)13724(Top 243%)
Half13.11 mi0.68 mi23947+7214217+3614217+3622619(Top 80%)13622(Top 85%)13622(Top 241%)
25K15.53 mi2.42 mi23730+21714124+9314124+9322732(Top 80%)13624(Top 85%)13624(Top 241%)
30K18.64 mi3.11 mi23888-15814155-3114155-3124384(Top 86%)14252(Top 88%)14252(Top 253%)
20M20.00 mi1.36 mi23820+6814105+5014105+5022776(Top 80%)13422(Top 83%)13422(Top 238%)
21M21.00 mi1.00 mi23893-7314125-2014125-2024670(Top 87%)14221(Top 88%)14221(Top 252%)
35K21.75 mi0.75 mi23790+10314067+5814067+5821190(Top 75%)12535(Top 78%)12535(Top 222%)
23M23.00 mi1.25 mi23704+8614004+6314004+6322334(Top 79%)13038(Top 81%)13038(Top 231%)
24M24.00 mi1.00 mi23675+2913975+2913975+2922912(Top 81%)13263(Top 82%)13263(Top 235%)
40K24.85 mi0.85 mi23644+3113943+3213943+3222541(Top 79%)13011(Top 81%)13011(Top 231%)
25.2M25.20 mi0.35 mi23668-2413949-613949-624664(Top 87%)14099(Top 88%)14099(Top 250%)
Finish26.22 mi1.02 mi23539+12913870+7913870+7920125(Top 71%)11862(Top 74%)11862(Top 210%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

23575

Males

14094

M18-39

14094

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

25380

Males

14867

M18-39

14867

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

23575

Males

14094

M18-39

14094

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

22847

Males

13724

M18-39

13724

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

22619

Males

13622

M18-39

13622

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

22732

Males

13624

M18-39

13624

25K→30K

15.5 - 18.6 mi

Top 86%
×9story building
+181ft-148ft

Overall

24384

Males

14252

M18-39

14252

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

22776

Males

13422

M18-39

13422

20M→21M

20.0 - 21.0 mi

Top 87%
×8story building
+106ft-24ft

Overall

24670

Males

14221

M18-39

14221

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21190

Males

12535

M18-39

12535

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

22334

Males

13038

M18-39

13038

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

22912

Males

13263

M18-39

13263

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

22541

Males

13011

M18-39

13011

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24664

Males

14099

M18-39

14099

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

20125

Males

11862

M18-39

11862

Passing Analysis

Category:
Athletes Passed
1923
Passed By
1364
Net Change
+559
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24098
5K → 10K47790-743#24098#24841
10K → 15K43410+424#24841#24417
15K → 20K4057+398#24417#24019
20K → Half775+72#24019#23947
Half → 25K24124+217#23947#23730
25K → 30K99257-158#23730#23888
30K → 20M10537+68#23888#23820
20M → 21M41114-73#23820#23893
21M → 35K1074+103#23893#23790
35K → 23M11327+86#23790#23704
23M → 24M5728+29#23704#23675
24M → 40K5524+31#23675#23644
40K → 25.2M1135-24#23644#23668
25.2M → Finish1312+129#23668#23539
TOTALS19231364+559
📊

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