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BOSTON MARATHON 2025

Calum Boyce

Bib: 4101•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 11%
Gender (Male)
#0 / 16105
Top 18%
Division (M18-39)
#0 / 5642
Top 39%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:27
Rank: #4425
Start → 5K
20:27 | 6:35/mi
10K· 6.21 mi
40:53
Rank: #4329 (+96)
5K → 10K
20:26 | 6:35/mi
15K· 9.32 mi
1:00:58
Rank: #3959 (+370)
10K → 15K
20:05 | 6:28/mi
20K· 12.43 mi
1:21:14
Rank: #3743 (+216)
15K → 20K
20:16 | 6:31/mi
Half· 13.11 mi
1:25:36
Rank: #3708 (+35)
20K → Half
4:22 | 6:24/mi
25K· 15.53 mi
1:41:32
Rank: #3613 (+95)
Half → 25K
15:56 | 6:34/mi
30K· 18.64 mi
2:02:29
Rank: #3456 (+157)
25K → 30K
20:57 | 6:45/mi
20M
2:11:35
Rank: #3327 (+129)
30K → 20M
9:06 | 6:42/mi
21M
2:18:42
Rank: #3263 (+64)
20M → 21M
7:07 | 7:07/mi
35K· 21.75 mi
2:23:42
Rank: #3238 (+25)
21M → 35K
5:00 | 6:41/mi
23M
2:32:29
Rank: #3218 (+20)
35K → 23M
8:47 | 7:01/mi
24M
2:39:10
Rank: #3171 (+47)
23M → 24M
6:41 | 6:41/mi
40K· 24.85 mi
2:44:51
Rank: #3080 (+91)
24M → 40K
5:41 | 6:39/mi
25.2M
2:47:18
Rank: #3034 (+46)
40K → 25.2M
2:27 | 7:06/mi
Finish· 26.22 mi
2:53:57
Rank: #2992 (+42)
25.2M → Finish
6:39 | 6:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:36
Pace6:32 /mi
2nd Half
Distance13.11 mi
Time1:28:21
Pace6:44 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5220:276:3520:27
6:35
-
10K
6.21 mi10:43:1840:536:3520:26
6:35
0:00
15K
9.32 mi11:03:231:00:586:3220:05
6:28
-0:07
20K
12.43 mi11:23:391:21:146:3220:16
6:31
+0:03
Half
13.11 mi11:28:011:25:366:324:22
6:24
-0:07
25K
15.53 mi11:43:571:41:326:3215:56
6:34
+0:10
30K
18.64 mi12:04:542:02:296:3420:57
6:45
+0:11
20M
20.00 mi12:14:002:11:356:359:06
6:42
-0:03
21M
21.00 mi12:21:072:18:426:367:07
7:07
+0:25
35K
21.75 mi12:26:072:23:426:365:00
6:41
-0:26
23M
23.00 mi12:34:542:32:296:388:47
7:01
+0:20
24M
24.00 mi12:41:352:39:106:386:41
6:41
-0:20
40K
24.85 mi12:47:162:44:516:385:41
6:39
-0:02
25.2M
25.20 mi12:49:432:47:186:382:27
7:06
+0:27
Finish
26.22 mi12:56:222:53:576:386:39
6:32
-0:34

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

6:24 /mi

Average Pace

6:38 /mi

Slowest Pace

7:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:23

95% of race

Time at Steady Pace

9:34

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:38 /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 mi10:22:5220:276:3520:27
6:35
#4425
10K
6.21 mi10:43:1840:536:3520:26
6:35
#4329
15K
9.32 mi11:03:231:00:586:3220:05
6:28
#3959
20K
12.43 mi11:23:391:21:146:3220:16
6:31
#3743
Half
13.11 mi11:28:011:25:366:324:22
6:24
#3708
25K
15.53 mi11:43:571:41:326:3215:56
6:34
#3613
30K
18.64 mi12:04:542:02:296:3420:57
6:45
#3456
20M
20.00 mi12:14:002:11:356:359:06
6:42
#3327
21M
21.00 mi12:21:072:18:426:367:07
7:07
#3263
35K
21.75 mi12:26:072:23:426:365:00
6:41
#3238
23M
23.00 mi12:34:542:32:296:388:47
7:01
#3218
24M
24.00 mi12:41:352:39:106:386:41
6:41
#3171
40K
24.85 mi12:47:162:44:516:385:41
6:39
#3080
25.2M
25.20 mi12:49:432:47:186:382:27
7:06
#3034
Finish
26.22 mi12:56:222:53:576:386:39
6:32
#2992
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4425416141613318(Top 12%)3148(Top 20%)3148(Top 56%)
10K6.21 mi3.10 mi4329+964069+924069+924259(Top 15%)4001(Top 25%)4001(Top 71%)
15K9.32 mi3.11 mi3959+3703730+3393730+3393318(Top 12%)3148(Top 20%)3148(Top 56%)
20K12.43 mi3.11 mi3743+2163533+1973533+1973247(Top 11%)3077(Top 19%)3077(Top 55%)
Half13.11 mi0.68 mi3708+353502+313502+313028(Top 11%)2889(Top 18%)2889(Top 51%)
25K15.53 mi2.42 mi3613+953414+883414+883263(Top 11%)3089(Top 19%)3089(Top 55%)
30K18.64 mi3.11 mi3456+1573270+1443270+1443099(Top 11%)2908(Top 18%)2908(Top 52%)
20M20.00 mi1.36 mi3327+1293147+1233147+1232442(Top 9%)2303(Top 14%)2303(Top 41%)
21M21.00 mi1.00 mi3263+643085+623085+622742(Top 10%)2545(Top 16%)2545(Top 45%)
35K21.75 mi0.75 mi3238+253058+273058+273365(Top 12%)3064(Top 19%)3064(Top 54%)
23M23.00 mi1.25 mi3218+203037+213037+213805(Top 13%)3418(Top 21%)3418(Top 61%)
24M24.00 mi1.00 mi3171+472992+452992+452879(Top 10%)2619(Top 16%)2619(Top 46%)
40K24.85 mi0.85 mi3080+912906+862906+862148(Top 8%)1974(Top 12%)1974(Top 35%)
25.2M25.20 mi0.35 mi3034+462862+442862+441802(Top 6%)1641(Top 10%)1641(Top 29%)
Finish26.22 mi1.02 mi2992+422821+412821+412930(Top 10%)2611(Top 16%)2611(Top 46%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3318

Males

3148

M18-39

3148

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4259

Males

4001

M18-39

4001

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3318

Males

3148

M18-39

3148

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

3247

Males

3077

M18-39

3077

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3028

Males

2889

M18-39

2889

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3263

Males

3089

M18-39

3089

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

3099

Males

2908

M18-39

2908

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2442

Males

2303

M18-39

2303

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2742

Males

2545

M18-39

2545

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3365

Males

3064

M18-39

3064

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3805

Males

3418

M18-39

3418

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2879

Males

2619

M18-39

2619

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2148

Males

1974

M18-39

1974

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1802

Males

1641

M18-39

1641

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2930

Males

2611

M18-39

2611

Passing Analysis

Category:
Athletes Passed
1746
Passed By
313
Net Change
+1433
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4425
5K → 10K18892+96#4425#4329
10K → 15K3788+370#4329#3959
15K → 20K22610+216#3959#3743
20K → Half383+35#3743#3708
Half → 25K11823+95#3708#3613
25K → 30K19134+157#3613#3456
30K → 20M14011+129#3456#3327
20M → 21M8218+64#3327#3263
21M → 35K4823+25#3263#3238
35K → 23M7252+20#3238#3218
23M → 24M6215+47#3218#3171
24M → 40K976+91#3171#3080
40K → 25.2M482+46#3080#3034
25.2M → Finish5816+42#3034#2992
TOTALS1746313+1433
📊

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