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BOSTON MARATHON 2025

Iain Fraser

Bib: 5357•M

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
23:21
Rank: #12384
Start → 5K
23:21 | 7:31/mi
10K· 6.21 mi
47:46
Rank: #13810 (-1426)
5K → 10K
24:25 | 7:52/mi
15K· 9.32 mi
1:12:17
Rank: #14248 (-438)
10K → 15K
24:31 | 7:53/mi
20K· 12.43 mi
1:37:17
Rank: #14478 (-230)
15K → 20K
25:00 | 8:03/mi
Half· 13.11 mi
1:42:32
Rank: #14405 (+73)
20K → Half
5:15 | 7:42/mi
25K· 15.53 mi
2:02:45
Rank: #14730 (-325)
Half → 25K
20:13 | 8:20/mi
30K· 18.64 mi
2:30:55
Rank: #15473 (-743)
25K → 30K
28:10 | 9:04/mi
20M
2:43:59
Rank: #15859 (-386)
30K → 20M
13:04 | 9:37/mi
21M
2:55:22
Rank: #16388 (-529)
20M → 21M
11:23 | 11:23/mi
35K· 21.75 mi
3:02:16
Rank: #16493 (-105)
21M → 35K
6:54 | 9:13/mi
23M
3:15:27
Rank: #17002 (-509)
35K → 23M
13:11 | 10:32/mi
24M
3:26:08
Rank: #17471 (-469)
23M → 24M
10:41 | 10:41/mi
40K· 24.85 mi
3:34:48
Rank: #17652 (-181)
24M → 40K
8:40 | 10:08/mi
25.2M
3:38:43
Rank: #17749 (-97)
40K → 25.2M
3:55 | 11:21/mi
Finish· 26.22 mi
3:48:56
Rank: #18072 (-323)
25.2M → Finish
10:13 | 10:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:32
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time2:06:24
Pace9:39 /mi
📊Positive Split: 23.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:1323:217:3123:21
7:31
-
10K
6.21 mi10:51:3847:467:4124:25
7:52
+0:21
15K
9.32 mi11:16:091:12:177:4524:31
7:53
+0:01
20K
12.43 mi11:41:091:37:177:5025:00
8:03
+0:10
Half
13.11 mi11:46:241:42:327:495:15
7:42
-0:21
25K
15.53 mi12:06:372:02:457:5420:13
8:20
+0:38
30K
18.64 mi12:34:472:30:558:0628:10
9:04
+0:44
20M
20.00 mi12:47:512:43:598:1213:04
9:37
+0:33
21M
21.00 mi12:59:142:55:228:2111:23
11:23
+1:46
35K
21.75 mi13:06:083:02:168:236:54
9:13
-2:10
23M
23.00 mi13:19:193:15:278:3013:11
10:32
+1:19
24M
24.00 mi13:30:003:26:088:3510:41
10:41
+0:09
40K
24.85 mi13:38:403:34:488:398:40
10:08
-0:33
25.2M
25.20 mi13:42:353:38:438:413:55
11:21
+1:13
Finish
26.22 mi13:52:483:48:568:4410:13
10:02
-1:19

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

7:31 /mi

Average Pace

8:44 /mi

Slowest Pace

11:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:45

54% of race

Time at Steady Pace

48:08

21% of race

Time at Slower Pace

58:03

25% of race

Average Pace: 8:44 /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 mi10:27:1323:217:3123:21
7:31
#12384
10K
6.21 mi10:51:3847:467:4124:25
7:52
#13810
15K
9.32 mi11:16:091:12:177:4524:31
7:53
#14248
20K
12.43 mi11:41:091:37:177:5025:00
8:03
#14478
Half
13.11 mi11:46:241:42:327:495:15
7:42
#14405
25K
15.53 mi12:06:372:02:457:5420:13
8:20
#14730
30K
18.64 mi12:34:472:30:558:0628:10
9:04
#15473
20M
20.00 mi12:47:512:43:598:1213:04
9:37
#15859
21M
21.00 mi12:59:142:55:228:2111:23
11:23
#16388
35K
21.75 mi13:06:083:02:168:236:54
9:13
#16493
23M
23.00 mi13:19:193:15:278:3013:11
10:32
#17002
24M
24.00 mi13:30:003:26:088:3510:41
10:41
#17471
40K
24.85 mi13:38:403:34:488:398:40
10:08
#17652
25.2M
25.20 mi13:42:353:38:438:413:55
11:21
#17749
Finish
26.22 mi13:52:483:48:568:4410:13
10:02
#18072
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi123849348934815159(Top 53%)10447(Top 65%)10447(Top 185%)
10K6.21 mi3.10 mi13810-14269941-5939941-59315341(Top 54%)10552(Top 66%)10552(Top 187%)
15K9.32 mi3.11 mi14248-43810093-15210093-15215159(Top 53%)10447(Top 65%)10447(Top 185%)
20K12.43 mi3.11 mi14478-23010160-6710160-6715255(Top 54%)10435(Top 65%)10435(Top 185%)
Half13.11 mi0.68 mi14405+7310127+3310127+3313349(Top 47%)9649(Top 60%)9649(Top 171%)
25K15.53 mi2.42 mi14730-32510223-9610223-9616164(Top 57%)10717(Top 67%)10717(Top 190%)
30K18.64 mi3.11 mi15473-74310496-27310496-27317997(Top 63%)11377(Top 71%)11377(Top 202%)
20M20.00 mi1.36 mi15859-38610625-12910625-12919661(Top 69%)11997(Top 74%)11997(Top 213%)
21M21.00 mi1.00 mi16388-52910822-19710822-19722335(Top 79%)13117(Top 81%)13117(Top 232%)
35K21.75 mi0.75 mi16493-10510846-2410846-2419236(Top 68%)11612(Top 72%)11612(Top 206%)
23M23.00 mi1.25 mi17002-50911021-17511021-17522082(Top 78%)12916(Top 80%)12916(Top 229%)
24M24.00 mi1.00 mi17471-46911195-17411195-17423263(Top 82%)13434(Top 83%)13434(Top 238%)
40K24.85 mi0.85 mi17652-18111241-4611241-4620883(Top 74%)12226(Top 76%)12226(Top 217%)
25.2M25.20 mi0.35 mi17749-9711280-3911280-3921640(Top 76%)12597(Top 78%)12597(Top 223%)
Finish26.22 mi1.02 mi18072-32311415-13511415-13522991(Top 81%)13270(Top 82%)13270(Top 235%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21stories
+97ft-345ft

Overall

15159

Males

10447

M18-39

10447

5K→10K

3.1 - 6.2 mi

Top 54%
×5stories
+79ft-138ft

Overall

15341

Males

10552

M18-39

10552

10K→15K

6.2 - 9.3 mi

Top 53%
×3stories
+67ft-78ft

Overall

15159

Males

10447

M18-39

10447

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

15255

Males

10435

M18-39

10435

20K→Half

12.4 - 13.1 mi

Top 47%
×2stories
+19ft-37ft

Overall

13349

Males

9649

M18-39

9649

Half→25K

13.1 - 15.5 mi

Top 57%
×4stories
+66ft-88ft

Overall

16164

Males

10717

M18-39

10717

25K→30K

15.5 - 18.6 mi

Top 63%
×9stories
+181ft-148ft

Overall

17997

Males

11377

M18-39

11377

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

19661

Males

11997

M18-39

11997

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

22335

Males

13117

M18-39

13117

21M→35K

21.0 - 21.8 mi

Top 68%
×7stories
+17ft-86ft

Overall

19236

Males

11612

M18-39

11612

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

22082

Males

12916

M18-39

12916

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

23263

Males

13434

M18-39

13434

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

20883

Males

12226

M18-39

12226

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

21640

Males

12597

M18-39

12597

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2stories
+22ft-21ft

Overall

22991

Males

13270

M18-39

13270

Passing Analysis

Category:
Athletes Passed
704
Passed By
6392
Net Change
-5688
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12384
5K → 10K201446-1426#12384#13810
10K → 15K80518-438#13810#14248
15K → 20K135365-230#14248#14478
20K → Half818+73#14478#14405
Half → 25K98423-325#14405#14730
25K → 30K88831-743#14730#15473
30K → 20M44430-386#15473#15859
20M → 21M21550-529#15859#16388
21M → 35K43148-105#16388#16493
35K → 23M25534-509#16493#17002
23M → 24M20489-469#17002#17471
24M → 40K26207-181#17471#17652
40K → 25.2M10107-97#17652#17749
25.2M → Finish13336-323#17749#18072
TOTALS7046392-5688
📊

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