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BOSTON MARATHON 2025

Keith Harrison

Bib: 4193•M

NJ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 14%
Gender (Male)
#0 / 16105
Top 23%
Division (M18-39)
#0 / 5642
Top 48%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:04
Rank: #3523
Start → 5K
20:04 | 6:28/mi
10K· 6.21 mi
40:10
Rank: #3507 (+16)
5K → 10K
20:06 | 6:28/mi
15K· 9.32 mi
1:00:18
Rank: #3458 (+49)
10K → 15K
20:08 | 6:29/mi
20K· 12.43 mi
1:20:43
Rank: #3471 (-13)
15K → 20K
20:25 | 6:34/mi
Half· 13.11 mi
1:25:07
Rank: #3450 (+21)
20K → Half
4:24 | 6:27/mi
25K· 15.53 mi
1:41:00
Rank: #3392 (+58)
Half → 25K
15:53 | 6:33/mi
30K· 18.64 mi
2:02:07
Rank: #3336 (+56)
25K → 30K
21:07 | 6:48/mi
20M
2:11:37
Rank: #3345 (-9)
30K → 20M
9:30 | 6:59/mi
21M
2:19:08
Rank: #3401 (-56)
20M → 21M
7:31 | 7:31/mi
35K· 21.75 mi
2:24:20
Rank: #3421 (-20)
21M → 35K
5:12 | 6:57/mi
23M
2:33:34
Rank: #3527 (-106)
35K → 23M
9:14 | 7:22/mi
24M
2:40:57
Rank: #3650 (-123)
23M → 24M
7:23 | 7:23/mi
40K· 24.85 mi
2:47:27
Rank: #3784 (-134)
24M → 40K
6:30 | 7:36/mi
25.2M
2:50:19
Rank: #3834 (-50)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
2:58:03
Rank: #4046 (-212)
25.2M → Finish
7:44 | 7:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:07
Pace6:30 /mi
2nd Half
Distance13.11 mi
Time1:32:56
Pace7:05 /mi
📊Positive Split: 9.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:1520:046:2820:04
6:28
-
10K
6.21 mi10:42:2140:106:2820:06
6:28
0:00
15K
9.32 mi11:02:291:00:186:2820:08
6:29
+0:01
20K
12.43 mi11:22:541:20:436:3020:25
6:34
+0:05
Half
13.11 mi11:27:181:25:076:304:24
6:27
-0:07
25K
15.53 mi11:43:111:41:006:3015:53
6:33
+0:06
30K
18.64 mi12:04:182:02:076:3321:07
6:48
+0:15
20M
20.00 mi12:13:482:11:376:359:30
6:59
+0:11
21M
21.00 mi12:21:192:19:086:387:31
7:31
+0:32
35K
21.75 mi12:26:312:24:206:385:12
6:57
-0:34
23M
23.00 mi12:35:452:33:346:419:14
7:22
+0:25
24M
24.00 mi12:43:082:40:576:427:23
7:23
+0:01
40K
24.85 mi12:49:382:47:276:446:30
7:36
+0:13
25.2M
25.20 mi12:52:302:50:196:462:52
8:19
+0:43
Finish
26.22 mi13:00:142:58:036:487:44
7:35
-0:44

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

6:27 /mi

Average Pace

6:48 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:00

57% of race

Time at Steady Pace

35:49

20% of race

Time at Slower Pace

41:14

23% of race

Average Pace: 6:47 /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 mi10:22:1520:046:2820:04
6:28
#3523
10K
6.21 mi10:42:2140:106:2820:06
6:28
#3507
15K
9.32 mi11:02:291:00:186:2820:08
6:29
#3458
20K
12.43 mi11:22:541:20:436:3020:25
6:34
#3471
Half
13.11 mi11:27:181:25:076:304:24
6:27
#3450
25K
15.53 mi11:43:111:41:006:3015:53
6:33
#3392
30K
18.64 mi12:04:182:02:076:3321:07
6:48
#3336
20M
20.00 mi12:13:482:11:376:359:30
6:59
#3345
21M
21.00 mi12:21:192:19:086:387:31
7:31
#3401
35K
21.75 mi12:26:312:24:206:385:12
6:57
#3421
23M
23.00 mi12:35:452:33:346:419:14
7:22
#3527
24M
24.00 mi12:43:082:40:576:427:23
7:23
#3650
40K
24.85 mi12:49:382:47:276:446:30
7:36
#3784
25.2M
25.20 mi12:52:302:50:196:462:52
8:19
#3834
Finish
26.22 mi13:00:142:58:036:487:44
7:35
#4046
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3523334533453440(Top 12%)3260(Top 20%)3260(Top 58%)
10K6.21 mi3.10 mi3507+163329+163329+163510(Top 12%)3325(Top 21%)3325(Top 59%)
15K9.32 mi3.11 mi3458+493283+463283+463440(Top 12%)3260(Top 20%)3260(Top 58%)
20K12.43 mi3.11 mi3471-133290-73290-73530(Top 12%)3340(Top 21%)3340(Top 59%)
Half13.11 mi0.68 mi3450+213269+213269+213364(Top 12%)3190(Top 20%)3190(Top 57%)
25K15.53 mi2.42 mi3392+583224+453224+453156(Top 11%)2990(Top 19%)2990(Top 53%)
30K18.64 mi3.11 mi3336+563157+673157+673425(Top 12%)3191(Top 20%)3191(Top 57%)
20M20.00 mi1.36 mi3345-93164-73164-74032(Top 14%)3692(Top 23%)3692(Top 65%)
21M21.00 mi1.00 mi3401-563214-503214-504666(Top 16%)4123(Top 26%)4123(Top 73%)
35K21.75 mi0.75 mi3421-203230-163230-165001(Top 18%)4368(Top 27%)4368(Top 77%)
23M23.00 mi1.25 mi3527-1063315-853315-855864(Top 21%)4878(Top 30%)4878(Top 86%)
24M24.00 mi1.00 mi3650-1233416-1013416-1016890(Top 24%)5443(Top 34%)5443(Top 96%)
40K24.85 mi0.85 mi3784-1343524-1083524-1087379(Top 26%)5637(Top 35%)5637(Top 100%)
25.2M25.20 mi0.35 mi3834-503560-363560-367599(Top 27%)5658(Top 35%)5658(Top 100%)
Finish26.22 mi1.02 mi4046-2123738-1783738-1789800(Top 35%)6861(Top 43%)6861(Top 122%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3440

Males

3260

M18-39

3260

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3510

Males

3325

M18-39

3325

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3440

Males

3260

M18-39

3260

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3530

Males

3340

M18-39

3340

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3364

Males

3190

M18-39

3190

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3156

Males

2990

M18-39

2990

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3425

Males

3191

M18-39

3191

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

4032

Males

3692

M18-39

3692

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4666

Males

4123

M18-39

4123

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

5001

Males

4368

M18-39

4368

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5864

Males

4878

M18-39

4878

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6890

Males

5443

M18-39

5443

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7379

Males

5637

M18-39

5637

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7599

Males

5658

M18-39

5658

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2stories
+22ft-21ft

Overall

9800

Males

6861

M18-39

6861

Passing Analysis

Category:
Athletes Passed
854
Passed By
1377
Net Change
-523
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3523
5K → 10K149133+16#3523#3507
10K → 15K12374+49#3507#3458
15K → 20K97110-13#3458#3471
20K → Half309+21#3471#3450
Half → 25K10244+58#3450#3392
25K → 30K13175+56#3392#3336
30K → 20M5665-9#3336#3345
20M → 21M3894-56#3345#3401
21M → 35K2949-20#3401#3421
35K → 23M36142-106#3421#3527
23M → 24M24147-123#3527#3650
24M → 40K20154-134#3650#3784
40K → 25.2M858-50#3784#3834
25.2M → Finish11223-212#3834#4046
TOTALS8541377-523
📊

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