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BOSTON MARATHON 2025

Fred Clarke-Louie

Bib: 14179•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 44%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 47%
Division (M50-54)
#0 / 1996
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
7:23/mi
22:55
↑ 97↓ 3451.5%
10K· 6.21 mi
7:26/mi
46:01
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:09:33
↑ 67↓ 78
20K· 12.43 mi
7:43/mi
1:33:30
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:38:48
↑ 19↓ 370.5%
25K· 15.53 mi
7:55/mi
1:58:00
↑ 66↓ 880.2%
30K· 18.64 mi
8:04/mi
2:23:04
↑ 181↓ 1480.2%
20M
8:20/mi
2:34:23
↑ 64↓ 500.2%
21M
8:58/mi
2:43:21
↑ 106↓ 241.6%
35K· 21.75 mi
7:57/mi
2:49:18
↑ 17↓ 861.7%
23M
8:20/mi
2:59:44
↑ 23↓ 630.6%
24M
8:14/mi
3:07:58
↓ 821.3%
40K· 24.85 mi
8:45/mi
3:15:27
↓ 200.3%
25.2M
10:00/mi
3:18:54
↑ 13↓ 160.2%
Finish· 26.22 mi
8:55/mi
3:27:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:48
Pace7:32 /mi
2nd Half
Distance13.11 mi
Time1:49:11
Pace8:20 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:2122:557:2322:55
7:23
-
10K
6.21 mi11:17:2746:017:2423:06
7:26
+0:03
15K
9.32 mi11:40:591:09:337:2823:32
7:34
+0:08
20K
12.43 mi12:04:561:33:307:3123:57
7:43
+0:09
Half
13.11 mi12:10:141:38:487:325:18
7:46
+0:03
25K
15.53 mi12:29:261:58:007:3619:12
7:55
+0:09
30K
18.64 mi12:54:302:23:047:4025:04
8:04
+0:09
20M
20.00 mi13:05:492:34:237:4311:19
8:20
+0:16
21M
21.00 mi13:14:472:43:217:478:58
8:58
+0:38
35K
21.75 mi13:20:442:49:187:475:57
7:57
-1:01
23M
23.00 mi13:31:102:59:447:4910:26
8:20
+0:23
24M
24.00 mi13:39:243:07:587:508:14
8:14
-0:06
40K
24.85 mi13:46:533:15:277:527:29
8:45
+0:31
25.2M
25.20 mi13:50:203:18:547:543:27
10:00
+1:15
Finish
26.22 mi13:59:253:27:597:569:05
8:55
-1:05

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

7:23 /mi

Average Pace

7:56 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:30

45% of race

Time at Steady Pace

1:25:30

41% of race

Time at Slower Pace

28:59

14% of race

Average Pace: 7:56 /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 mi10:54:2122:557:2322:55
7:23
#11101
10K
6.21 mi11:17:2746:017:2423:06
7:26
#11282
15K
9.32 mi11:40:591:09:337:2823:32
7:34
#11642
20K
12.43 mi12:04:561:33:307:3123:57
7:43
#11836
Half
13.11 mi12:10:141:38:487:325:18
7:46
#11951
25K
15.53 mi12:29:261:58:007:3619:12
7:55
#12149
30K
18.64 mi12:54:302:23:047:4025:04
8:04
#12034
20M
20.00 mi13:05:492:34:237:4311:19
8:20
#12070
21M
21.00 mi13:14:472:43:217:478:58
8:58
#12121
35K
21.75 mi13:20:442:49:187:475:57
7:57
#12104
23M
23.00 mi13:31:102:59:447:4910:26
8:20
#12078
24M
24.00 mi13:39:243:07:587:508:14
8:14
#12096
40K
24.85 mi13:46:533:15:277:527:29
8:45
#12209
25.2M
25.20 mi13:50:203:18:547:543:27
10:00
#12300
Finish
26.22 mi13:59:253:27:597:569:05
8:55
#12582
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi111018743874312365(Top 44%)9235(Top 57%)9235(Top 463%)
10K6.21 mi3.10 mi11282-1818815-728815-7211502(Top 40%)8906(Top 55%)8906(Top 446%)
15K9.32 mi3.11 mi11642-3608965-1508965-15012365(Top 44%)9235(Top 57%)9235(Top 463%)
20K12.43 mi3.11 mi11836-1949025-609025-6012480(Top 44%)9186(Top 57%)9186(Top 460%)
Half13.11 mi0.68 mi11951-1159067-429067-4213904(Top 49%)9848(Top 61%)9848(Top 493%)
25K15.53 mi2.42 mi12149-1989115-489115-4813228(Top 47%)9402(Top 58%)9402(Top 471%)
30K18.64 mi3.11 mi12034+1158990+1258990+12511865(Top 42%)8610(Top 53%)8610(Top 431%)
20M20.00 mi1.36 mi12070-368969+218969+2112653(Top 45%)8841(Top 55%)8841(Top 443%)
21M21.00 mi1.00 mi12121-518955+148955+1413283(Top 47%)8990(Top 56%)8990(Top 450%)
35K21.75 mi0.75 mi12104+178917+388917+3811915(Top 42%)8285(Top 51%)8285(Top 415%)
23M23.00 mi1.25 mi12078+268875+428875+4212226(Top 43%)8334(Top 52%)8334(Top 418%)
24M24.00 mi1.00 mi12096-188847+288847+2812778(Top 45%)8541(Top 53%)8541(Top 428%)
40K24.85 mi0.85 mi12209-1138864-178864-1714890(Top 52%)9387(Top 58%)9387(Top 470%)
25.2M25.20 mi0.35 mi12300-918904-408904-4016971(Top 60%)10336(Top 64%)10336(Top 518%)
Finish26.22 mi1.02 mi12582-2829011-1079011-10718569(Top 65%)11149(Top 69%)11149(Top 559%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

12365

Males

9235

M50-54

9235

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

11502

Males

8906

M50-54

8906

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

12365

Males

9235

M50-54

9235

15K→20K

9.3 - 12.4 mi

Top 44%
×5story building
+106ft-86ft

Overall

12480

Males

9186

M50-54

9186

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13904

Males

9848

M50-54

9848

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

13228

Males

9402

M50-54

9402

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

11865

Males

8610

M50-54

8610

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12653

Males

8841

M50-54

8841

20M→21M

20.0 - 21.0 mi

Top 47%
×8story building
+106ft-24ft

Overall

13283

Males

8990

M50-54

8990

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11915

Males

8285

M50-54

8285

35K→23M

21.8 - 23.0 mi

Top 43%
×5story building
+23ft-63ft

Overall

12226

Males

8334

M50-54

8334

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

12778

Males

8541

M50-54

8541

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14890

Males

9387

M50-54

9387

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

16971

Males

10336

M50-54

10336

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

18569

Males

11149

M50-54

11149

Passing Analysis

Category:
Athletes Passed
1329
Passed By
2810
Net Change
-1481
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11101
5K → 10K163344-181#11101#11282
10K → 15K96456-360#11282#11642
15K → 20K125319-194#11642#11836
20K → Half14129-115#11836#11951
Half → 25K101299-198#11951#12149
25K → 30K299184+115#12149#12034
30K → 20M106142-36#12034#12070
20M → 21M86137-51#12070#12121
21M → 35K7457+17#12121#12104
35K → 23M11589+26#12104#12078
23M → 24M7492-18#12078#12096
24M → 40K45158-113#12096#12209
40K → 25.2M9100-91#12209#12300
25.2M → Finish22304-282#12300#12582
TOTALS13292810-1481
📊

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