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BOSTON MARATHON 2025

Calum Fenton

Bib: 31854•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 30%
Gender (Male)
#0 / 16105
Top 43%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:54/mi
24:34
↑ 97↓ 3451.5%
10K· 6.21 mi
7:22/mi
47:26
↑ 79↓ 1380.4%
15K· 9.32 mi
7:28/mi
1:10:39
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:34:09
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:39:12
↑ 19↓ 370.5%
25K· 15.53 mi
7:32/mi
1:57:29
↑ 66↓ 880.2%
30K· 18.64 mi
7:20/mi
2:20:16
↑ 181↓ 1480.2%
20M
7:13/mi
2:30:05
↑ 64↓ 500.2%
21M
7:44/mi
2:37:49
↑ 106↓ 241.6%
35K· 21.75 mi
7:08/mi
2:43:09
↑ 17↓ 861.7%
23M
7:16/mi
2:52:15
↑ 23↓ 630.6%
24M
7:02/mi
2:59:17
↓ 821.3%
40K· 24.85 mi
7:15/mi
3:05:29
↓ 200.3%
25.2M
7:44/mi
3:08:09
↑ 13↓ 160.2%
Finish· 26.22 mi
6:53/mi
3:15:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:39:12
Pace7:34 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:35:58
Pace7:19 /mi
📊Negative Split: 3.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:5124:347:5424:34
7:54
-
10K
6.21 mi12:11:4347:267:3822:52
7:22
-0:32
15K
9.32 mi12:34:561:10:397:3523:13
7:28
+0:06
20K
12.43 mi12:58:261:34:097:3523:30
7:34
+0:06
Half
13.11 mi13:03:291:39:127:345:03
7:24
-0:10
25K
15.53 mi13:21:461:57:297:3418:17
7:32
+0:08
30K
18.64 mi13:44:332:20:167:3122:47
7:20
-0:12
20M
20.00 mi13:54:222:30:057:309:49
7:13
-0:07
21M
21.00 mi14:02:062:37:497:317:44
7:44
+0:31
35K
21.75 mi14:07:262:43:097:305:20
7:08
-0:36
23M
23.00 mi14:16:322:52:157:299:06
7:16
+0:08
24M
24.00 mi14:23:342:59:177:287:02
7:02
-0:14
40K
24.85 mi14:29:463:05:297:286:12
7:15
+0:13
25.2M
25.20 mi14:32:263:08:097:282:40
7:44
+0:29
Finish
26.22 mi14:39:273:15:107:277:01
6:53
-0:51

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

6:53 /mi

Average Pace

7:27 /mi

Slowest Pace

7:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:12

82% of race

Time at Steady Pace

34:58

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:27 /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 mi11:48:5124:347:5424:34
7:54
#15739
10K
6.21 mi12:11:4347:267:3822:52
7:22
#13330
15K
9.32 mi12:34:561:10:397:3523:13
7:28
#12686
20K
12.43 mi12:58:261:34:097:3523:30
7:34
#12285
Half
13.11 mi13:03:291:39:127:345:03
7:24
#12217
25K
15.53 mi13:21:461:57:297:3418:17
7:32
#11864
30K
18.64 mi13:44:332:20:167:3122:47
7:20
#10796
20M
20.00 mi13:54:222:30:057:309:49
7:13
#10279
21M
21.00 mi14:02:062:37:497:317:44
7:44
#9931
35K
21.75 mi14:07:262:43:097:305:20
7:08
#9737
23M
23.00 mi14:16:322:52:157:299:06
7:16
#9401
24M
24.00 mi14:23:342:59:177:287:02
7:02
#9120
40K
24.85 mi14:29:463:05:297:286:12
7:15
#8896
25.2M
25.20 mi14:32:263:08:097:282:40
7:44
#8800
Finish
26.22 mi14:39:273:15:107:277:01
6:53
#8608
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi15739107021070211512(Top 41%)8833(Top 55%)8833(Top 157%)
10K6.21 mi3.10 mi13330+24099743+9599743+95910808(Top 38%)8565(Top 53%)8565(Top 152%)
15K9.32 mi3.11 mi12686+6449449+2949449+29411512(Top 41%)8833(Top 55%)8833(Top 157%)
20K12.43 mi3.11 mi12285+4019226+2239226+22311254(Top 40%)8613(Top 53%)8613(Top 153%)
Half13.11 mi0.68 mi12217+689181+459181+4510790(Top 38%)8415(Top 52%)8415(Top 149%)
25K15.53 mi2.42 mi11864+3538979+2028979+20210279(Top 36%)8021(Top 50%)8021(Top 142%)
30K18.64 mi3.11 mi10796+10688405+5748405+5746654(Top 23%)5751(Top 36%)5751(Top 102%)
20M20.00 mi1.36 mi10279+5178117+2888117+2885347(Top 19%)4744(Top 29%)4744(Top 84%)
21M21.00 mi1.00 mi9931+3487910+2077910+2075847(Top 21%)4966(Top 31%)4966(Top 88%)
35K21.75 mi0.75 mi9737+1947788+1227788+1226169(Top 22%)5191(Top 32%)5191(Top 92%)
23M23.00 mi1.25 mi9401+3367563+2257563+2255279(Top 19%)4515(Top 28%)4515(Top 80%)
24M24.00 mi1.00 mi9120+2817375+1887375+1884837(Top 17%)4151(Top 26%)4151(Top 74%)
40K24.85 mi0.85 mi8896+2247205+1707205+1705385(Top 19%)4486(Top 28%)4486(Top 80%)
25.2M25.20 mi0.35 mi8800+967128+777128+774546(Top 16%)3824(Top 24%)3824(Top 68%)
Finish26.22 mi1.02 mi8608+1926994+1346994+1345007(Top 18%)4122(Top 26%)4122(Top 73%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

11512

Males

8833

M18-39

8833

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10808

Males

8565

M18-39

8565

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

11512

Males

8833

M18-39

8833

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11254

Males

8613

M18-39

8613

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10790

Males

8415

M18-39

8415

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

10279

Males

8021

M18-39

8021

25K→30K

15.5 - 18.6 mi

Top 23%
×9story building
+181ft-148ft

Overall

6654

Males

5751

M18-39

5751

30K→20M

18.6 - 20.0 mi

Top 19%
×5story building
+64ft-50ft

Overall

5347

Males

4744

M18-39

4744

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

5847

Males

4966

M18-39

4966

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

6169

Males

5191

M18-39

5191

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

5279

Males

4515

M18-39

4515

23M→24M

23.0 - 24.0 mi

Top 17%
×6story building
+12ft-82ft

Overall

4837

Males

4151

M18-39

4151

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5385

Males

4486

M18-39

4486

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4546

Males

3824

M18-39

3824

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2story building
+22ft-21ft

Overall

5007

Males

4122

M18-39

4122

Passing Analysis

Category:
Athletes Passed
7252*
Passed By
121
Net Change
+7131
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15739
5K → 10K24145+2409#15739#13330
10K → 15K66925+644#13330#12686
15K → 20K43130+401#12686#12285
20K → Half735+68#12285#12217
Half → 25K37724+353#12217#11864
25K → 30K10702+1068#11864#10796
30K → 20M5170+517#10796#10279
20M → 21M351*3+348#10279#9931
21M → 35K1984+194#9931#9737
35K → 23M3404+336#9737#9401
23M → 24M2821+281#9401#9120
24M → 40K2284+224#9120#8896
40K → 25.2M993+96#8896#8800
25.2M → Finish20311+192#8800#8608
TOTALS7252*121+7131

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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