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BOSTON MARATHON 2025

Clarence Walker

Bib: 2128•M

VA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 13%
Gender (Male)
#0 / 16105
Top 21%
Division (M18-39)
#0 / 5642
Top 45%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:03
Rank: #636
Start → 5K
18:03 | 5:49/mi
10K· 6.21 mi
36:00
Rank: #592 (+44)
5K → 10K
17:57 | 5:47/mi
15K· 9.32 mi
54:58
Rank: #782 (-190)
10K → 15K
18:58 | 6:06/mi
20K· 12.43 mi
1:15:33
Rank: #1235 (-453)
15K → 20K
20:35 | 6:38/mi
Half· 13.11 mi
1:19:44
Rank: #1255 (-20)
20K → Half
4:11 | 6:08/mi
25K· 15.53 mi
1:36:45
Rank: #1830 (-575)
Half → 25K
17:01 | 7:01/mi
30K· 18.64 mi
1:59:35
Rank: #2535 (-705)
25K → 30K
22:50 | 7:21/mi
20M
2:08:47
Rank: #2505 (+30)
30K → 20M
9:12 | 6:46/mi
21M
2:16:56
Rank: #2785 (-280)
20M → 21M
8:09 | 8:09/mi
35K· 21.75 mi
2:21:44
Rank: #2742 (+43)
21M → 35K
4:48 | 6:25/mi
23M
2:32:36
Rank: #3257 (-515)
35K → 23M
10:52 | 8:41/mi
24M
2:40:24
Rank: #3487 (-230)
23M → 24M
7:48 | 7:48/mi
40K· 24.85 mi
2:47:43
Rank: #3858 (-371)
24M → 40K
7:19 | 8:33/mi
25.2M
2:50:16
Rank: #3811 (+47)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:56:30
Rank: #3619 (+192)
25.2M → Finish
6:14 | 6:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:44
Pace6:05 /mi
2nd Half
Distance13.11 mi
Time1:36:46
Pace7:23 /mi
📊Positive Split: 21.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:2918:035:4918:03
5:49
-
10K
6.21 mi10:36:2636:005:4817:57
5:47
-0:02
15K
9.32 mi10:55:2454:585:5418:58
6:06
+0:19
20K
12.43 mi11:15:591:15:336:0520:35
6:38
+0:32
Half
13.11 mi11:20:101:19:446:054:11
6:08
-0:30
25K
15.53 mi11:37:111:36:456:1417:01
7:01
+0:53
30K
18.64 mi12:00:011:59:356:2522:50
7:21
+0:20
20M
20.00 mi12:09:132:08:476:269:12
6:46
-0:35
21M
21.00 mi12:17:222:16:566:318:09
8:09
+1:23
35K
21.75 mi12:22:102:21:446:314:48
6:25
-1:44
23M
23.00 mi12:33:022:32:366:3810:52
8:41
+2:16
24M
24.00 mi12:40:502:40:246:417:48
7:48
-0:53
40K
24.85 mi12:48:092:47:436:457:19
8:33
+0:45
25.2M
25.20 mi12:50:422:50:166:452:33
7:24
-1:09
Finish
26.22 mi12:56:562:56:306:446:14
6:07
-1:17

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

5:47 /mi

Average Pace

6:44 /mi

Slowest Pace

8:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:05:23

37% of race

Time at Steady Pace

51:36

29% of race

Time at Slower Pace

59:31

34% of race

Average Pace: 6:44 /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 mi10:18:2918:035:4918:03
5:49
#636
10K
6.21 mi10:36:2636:005:4817:57
5:47
#592
15K
9.32 mi10:55:2454:585:5418:58
6:06
#782
20K
12.43 mi11:15:591:15:336:0520:35
6:38
#1235
Half
13.11 mi11:20:101:19:446:054:11
6:08
#1255
25K
15.53 mi11:37:111:36:456:1417:01
7:01
#1830
30K
18.64 mi12:00:011:59:356:2522:50
7:21
#2535
20M
20.00 mi12:09:132:08:476:269:12
6:46
#2505
21M
21.00 mi12:17:222:16:566:318:09
8:09
#2785
35K
21.75 mi12:22:102:21:446:314:48
6:25
#2742
23M
23.00 mi12:33:022:32:366:3810:52
8:41
#3257
24M
24.00 mi12:40:502:40:246:417:48
7:48
#3487
40K
24.85 mi12:48:092:47:436:457:19
8:33
#3858
25.2M
25.20 mi12:50:422:50:166:452:33
7:24
#3811
Finish
26.22 mi12:56:562:56:306:446:14
6:07
#3619
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6365895891417(Top 5%)1349(Top 8%)1349(Top 24%)
10K6.21 mi3.10 mi592+44552+37552+37564(Top 2%)526(Top 3%)526(Top 9%)
15K9.32 mi3.11 mi782-190731-179731-1791417(Top 5%)1349(Top 8%)1349(Top 24%)
20K12.43 mi3.11 mi1235-4531170-4391170-4393874(Top 14%)3652(Top 23%)3652(Top 65%)
Half13.11 mi0.68 mi1255-201187-171187-171708(Top 6%)1627(Top 10%)1627(Top 29%)
25K15.53 mi2.42 mi1830-5751742-5551742-5556437(Top 23%)5717(Top 35%)5717(Top 101%)
30K18.64 mi3.11 mi2535-7052421-6792421-6796746(Top 24%)5815(Top 36%)5815(Top 103%)
20M20.00 mi1.36 mi2505+302390+312390+312797(Top 10%)2622(Top 16%)2622(Top 46%)
21M21.00 mi1.00 mi2785-2802652-2622652-2628227(Top 29%)6378(Top 40%)6378(Top 113%)
35K21.75 mi0.75 mi2742+432608+442608+442125(Top 7%)1992(Top 12%)1992(Top 35%)
23M23.00 mi1.25 mi3257-5153075-4673075-46714380(Top 51%)9330(Top 58%)9330(Top 165%)
24M24.00 mi1.00 mi3487-2303274-1993274-1999766(Top 34%)7037(Top 44%)7037(Top 125%)
40K24.85 mi0.85 mi3858-3713583-3093583-30913736(Top 48%)8861(Top 55%)8861(Top 157%)
25.2M25.20 mi0.35 mi3811+473542+413542+412977(Top 10%)2656(Top 16%)2656(Top 47%)
Finish26.22 mi1.02 mi3619+1923372+1703372+1701274(Top 4%)1192(Top 7%)1192(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1417

Males

1349

M18-39

1349

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

564

Males

526

M18-39

526

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1417

Males

1349

M18-39

1349

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3874

Males

3652

M18-39

3652

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1708

Males

1627

M18-39

1627

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6437

Males

5717

M18-39

5717

25K→30K

15.5 - 18.6 mi

Top 24%
×9stories
+181ft-148ft

Overall

6746

Males

5815

M18-39

5815

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2797

Males

2622

M18-39

2622

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

8227

Males

6378

M18-39

6378

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

2125

Males

1992

M18-39

1992

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

14380

Males

9330

M18-39

9330

23M→24M

23.0 - 24.0 mi

Top 34%
×6stories
+12ft-82ft

Overall

9766

Males

7037

M18-39

7037

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13736

Males

8861

M18-39

8861

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2977

Males

2656

M18-39

2656

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1274

Males

1192

M18-39

1192

Passing Analysis

Category:
Athletes Passed
457
Passed By
3440
Net Change
-2983
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#636
5K → 10K5915+44#636#592
10K → 15K0190-190#592#782
15K → 20K1454-453#782#1235
20K → Half323-20#1235#1255
Half → 25K4579-575#1255#1830
25K → 30K7712-705#1830#2535
30K → 20M5727+30#2535#2505
20M → 21M11291-280#2505#2785
21M → 35K496+43#2785#2742
35K → 23M8523-515#2742#3257
23M → 24M9239-230#3257#3487
24M → 40K6377-371#3487#3858
40K → 25.2M503+47#3858#3811
25.2M → Finish1931+192#3811#3619
TOTALS4573440-2983
📊

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