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BOSTON MARATHON 2025

Campbell Ilfrey

Bib: 6988•M

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 23%
Gender (Male)
#0 / 16105
Top 35%
Masters (Masters Men)
#0 / 10463
Top 21%
Division (M50-54)
#0 / 1996
Top 16%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:45
Rank: #5259
Start → 5K
20:45 | 6:41/mi
10K· 6.21 mi
41:35
Rank: #5286 (-27)
5K → 10K
20:50 | 6:42/mi
15K· 9.32 mi
1:02:23
Rank: #5188 (+98)
10K → 15K
20:48 | 6:42/mi
20K· 12.43 mi
1:23:21
Rank: #5062 (+126)
15K → 20K
20:58 | 6:45/mi
Half· 13.11 mi
1:27:56
Rank: #5070 (-8)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:44:36
Rank: #5094 (-24)
Half → 25K
16:40 | 6:52/mi
30K· 18.64 mi
2:06:47
Rank: #5176 (-82)
25K → 30K
22:11 | 7:08/mi
20M
2:16:55
Rank: #5328 (-152)
30K → 20M
10:08 | 7:27/mi
21M
2:25:10
Rank: #5519 (-191)
20M → 21M
8:15 | 8:15/mi
35K· 21.75 mi
2:30:36
Rank: #5568 (-49)
21M → 35K
5:26 | 7:16/mi
23M
2:40:27
Rank: #5650 (-82)
35K → 23M
9:51 | 7:52/mi
24M
2:48:28
Rank: #5817 (-167)
23M → 24M
8:01 | 8:01/mi
40K· 24.85 mi
2:55:42
Rank: #5998 (-181)
24M → 40K
7:14 | 8:28/mi
25.2M
2:58:59
Rank: #6091 (-93)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
3:07:43
Rank: #6405 (-314)
25.2M → Finish
8:44 | 8:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:56
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:39:47
Pace7:37 /mi
📊Positive Split: 13.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:4920:456:4120:45
6:41
-
10K
6.21 mi10:47:3941:356:4220:50
6:42
+0:01
15K
9.32 mi11:08:271:02:236:4220:48
6:42
0:00
20K
12.43 mi11:29:251:23:216:4220:58
6:45
+0:03
Half
13.11 mi11:34:001:27:566:424:35
6:43
-0:02
25K
15.53 mi11:50:401:44:366:4416:40
6:52
+0:09
30K
18.64 mi12:12:512:06:476:4822:11
7:08
+0:16
20M
20.00 mi12:22:592:16:556:5110:08
7:27
+0:19
21M
21.00 mi12:31:142:25:106:558:15
8:15
+0:48
35K
21.75 mi12:36:402:30:366:555:26
7:16
-0:59
23M
23.00 mi12:46:312:40:276:599:51
7:52
+0:36
24M
24.00 mi12:54:322:48:287:018:01
8:01
+0:09
40K
24.85 mi13:01:462:55:427:047:14
8:28
+0:27
25.2M
25.20 mi13:05:032:58:597:063:17
9:31
+1:03
Finish
26.22 mi13:13:473:07:437:108:44
8:34
-0:57

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

6:41 /mi

Average Pace

7:10 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:56

47% of race

Time at Steady Pace

54:25

29% of race

Time at Slower Pace

45:22

24% of race

Average Pace: 7:10 /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 mi10:26:4920:456:4120:45
6:41
#5259
10K
6.21 mi10:47:3941:356:4220:50
6:42
#5286
15K
9.32 mi11:08:271:02:236:4220:48
6:42
#5188
20K
12.43 mi11:29:251:23:216:4220:58
6:45
#5062
Half
13.11 mi11:34:001:27:566:424:35
6:43
#5070
25K
15.53 mi11:50:401:44:366:4416:40
6:52
#5094
30K
18.64 mi12:12:512:06:476:4822:11
7:08
#5176
20M
20.00 mi12:22:592:16:556:5110:08
7:27
#5328
21M
21.00 mi12:31:142:25:106:558:15
8:15
#5519
35K
21.75 mi12:36:402:30:366:555:26
7:16
#5568
23M
23.00 mi12:46:312:40:276:599:51
7:52
#5650
24M
24.00 mi12:54:322:48:287:018:01
8:01
#5817
40K
24.85 mi13:01:462:55:427:047:14
8:28
#5998
25.2M
25.20 mi13:05:032:58:597:063:17
9:31
#6091
Finish
26.22 mi13:13:473:07:437:108:44
8:34
#6405
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5259489448945028(Top 18%)4673(Top 29%)4673(Top 234%)
10K6.21 mi3.10 mi5286-274905-114905-115381(Top 19%)4973(Top 31%)4973(Top 249%)
15K9.32 mi3.11 mi5188+984823+824823+825028(Top 18%)4673(Top 29%)4673(Top 234%)
20K12.43 mi3.11 mi5062+1264709+1144709+1144831(Top 17%)4470(Top 28%)4470(Top 224%)
Half13.11 mi0.68 mi5070-84710-14710-15434(Top 19%)4989(Top 31%)4989(Top 250%)
25K15.53 mi2.42 mi5094-244723-134723-135459(Top 19%)4963(Top 31%)4963(Top 249%)
30K18.64 mi3.11 mi5176-824763-404763-405549(Top 20%)4972(Top 31%)4972(Top 249%)
20M20.00 mi1.36 mi5328-1524880-1174880-1176707(Top 24%)5648(Top 35%)5648(Top 283%)
21M21.00 mi1.00 mi5519-1915035-1555035-1558839(Top 31%)6717(Top 42%)6717(Top 337%)
35K21.75 mi0.75 mi5568-495066-315066-316946(Top 24%)5656(Top 35%)5656(Top 283%)
23M23.00 mi1.25 mi5650-825112-465112-469016(Top 32%)6716(Top 42%)6716(Top 336%)
24M24.00 mi1.00 mi5817-1675221-1095221-10911305(Top 40%)7796(Top 48%)7796(Top 391%)
40K24.85 mi0.85 mi5998-1815346-1255346-12513127(Top 46%)8566(Top 53%)8566(Top 429%)
25.2M25.20 mi0.35 mi6091-935406-605406-6014583(Top 51%)9176(Top 57%)9176(Top 460%)
Finish26.22 mi1.02 mi6405-3145596-1905596-19016628(Top 59%)10202(Top 63%)10202(Top 511%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

5028

Males

4673

M50-54

4673

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5381

Males

4973

M50-54

4973

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

5028

Males

4673

M50-54

4673

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4831

Males

4470

M50-54

4470

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5434

Males

4989

M50-54

4989

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5459

Males

4963

M50-54

4963

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5549

Males

4972

M50-54

4972

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6707

Males

5648

M50-54

5648

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8839

Males

6717

M50-54

6717

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6946

Males

5656

M50-54

5656

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

9016

Males

6716

M50-54

6716

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

11305

Males

7796

M50-54

7796

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

13127

Males

8566

M50-54

8566

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14583

Males

9176

M50-54

9176

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2stories
+22ft-21ft

Overall

16628

Males

10202

M50-54

10202

Passing Analysis

Category:
Athletes Passed
1003
Passed By
2149
Net Change
-1146
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5259
5K → 10K164191-27#5259#5286
10K → 15K18385+98#5286#5188
15K → 20K18357+126#5188#5062
20K → Half2634-8#5062#5070
Half → 25K96120-24#5070#5094
25K → 30K142224-82#5094#5176
30K → 20M34186-152#5176#5328
20M → 21M24215-191#5328#5519
21M → 35K3180-49#5519#5568
35K → 23M56138-82#5568#5650
23M → 24M24191-167#5650#5817
24M → 40K16197-181#5817#5998
40K → 25.2M10103-93#5998#6091
25.2M → Finish14328-314#6091#6405
TOTALS10032149-1146
📊

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