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BOSTON MARATHON 2025

Jack Clarke

Bib: 5247•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 15%
Division (M18-39)
#0 / 5642
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:49
Rank: #2964
Start → 5K
19:49 | 6:23/mi
10K· 6.21 mi
39:37
Rank: #2891 (+73)
5K → 10K
19:48 | 6:22/mi
15K· 9.32 mi
59:39
Rank: #3009 (-118)
10K → 15K
20:02 | 6:27/mi
20K· 12.43 mi
1:19:52
Rank: #3022 (-13)
15K → 20K
20:13 | 6:30/mi
Half· 13.11 mi
1:24:12
Rank: #3013 (+9)
20K → Half
4:20 | 6:21/mi
25K· 15.53 mi
1:39:57
Rank: #2958 (+55)
Half → 25K
15:45 | 6:30/mi
30K· 18.64 mi
2:00:41
Rank: #2879 (+79)
25K → 30K
20:44 | 6:40/mi
20M
2:09:48
Rank: #2811 (+68)
30K → 20M
9:07 | 6:43/mi
21M
2:16:47
Rank: #2744 (+67)
20M → 21M
6:59 | 6:59/mi
35K· 21.75 mi
2:21:37
Rank: #2708 (+36)
21M → 35K
4:50 | 6:28/mi
23M
2:30:06
Rank: #2664 (+44)
35K → 23M
8:29 | 6:47/mi
24M
2:36:46
Rank: #2631 (+33)
23M → 24M
6:40 | 6:40/mi
40K· 24.85 mi
2:42:38
Rank: #2623 (+8)
24M → 40K
5:52 | 6:52/mi
25.2M
2:45:13
Rank: #2626 (-3)
40K → 25.2M
2:35 | 7:29/mi
Finish· 26.22 mi
2:51:55
Rank: #2621 (+5)
25.2M → Finish
6:42 | 6:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:12
Pace6:25 /mi
2nd Half
Distance13.11 mi
Time1:27:43
Pace6:41 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2319:496:2319:49
6:23
-
10K
6.21 mi10:43:1139:376:2319:48
6:22
-0:01
15K
9.32 mi11:03:1359:396:2420:02
6:27
+0:05
20K
12.43 mi11:23:261:19:526:2620:13
6:30
+0:03
Half
13.11 mi11:27:461:24:126:254:20
6:21
-0:09
25K
15.53 mi11:43:311:39:576:2615:45
6:30
+0:09
30K
18.64 mi12:04:152:00:416:2820:44
6:40
+0:10
20M
20.00 mi12:13:222:09:486:299:07
6:43
+0:03
21M
21.00 mi12:20:212:16:476:316:59
6:59
+0:16
35K
21.75 mi12:25:112:21:376:314:50
6:28
-0:31
23M
23.00 mi12:33:402:30:066:328:29
6:47
+0:19
24M
24.00 mi12:40:202:36:466:326:40
6:40
-0:07
40K
24.85 mi12:46:122:42:386:335:52
6:52
+0:12
25.2M
25.20 mi12:48:472:45:136:332:35
7:29
+0:37
Finish
26.22 mi12:55:292:51:556:346:42
6:34
-0:55

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

6:21 /mi

Average Pace

6:34 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:20

98% of race

Time at Steady Pace

2:35

2% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:33 /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 mi10:23:2319:496:2319:49
6:23
#2964
10K
6.21 mi10:43:1139:376:2319:48
6:22
#2891
15K
9.32 mi11:03:1359:396:2420:02
6:27
#3009
20K
12.43 mi11:23:261:19:526:2620:13
6:30
#3022
Half
13.11 mi11:27:461:24:126:254:20
6:21
#3013
25K
15.53 mi11:43:311:39:576:2615:45
6:30
#2958
30K
18.64 mi12:04:152:00:416:2820:44
6:40
#2879
20M
20.00 mi12:13:222:09:486:299:07
6:43
#2811
21M
21.00 mi12:20:212:16:476:316:59
6:59
#2744
35K
21.75 mi12:25:112:21:376:314:50
6:28
#2708
23M
23.00 mi12:33:402:30:066:328:29
6:47
#2664
24M
24.00 mi12:40:202:36:466:326:40
6:40
#2631
40K
24.85 mi12:46:122:42:386:335:52
6:52
#2623
25.2M
25.20 mi12:48:472:45:136:332:35
7:29
#2626
Finish
26.22 mi12:55:292:51:556:346:42
6:34
#2621
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2964282028203243(Top 11%)3083(Top 19%)3083(Top 55%)
10K6.21 mi3.10 mi2891+732754+662754+662877(Top 10%)2739(Top 17%)2739(Top 49%)
15K9.32 mi3.11 mi3009-1182868-1142868-1143243(Top 11%)3083(Top 19%)3083(Top 55%)
20K12.43 mi3.11 mi3022-132881-132881-133170(Top 11%)3010(Top 19%)3010(Top 53%)
Half13.11 mi0.68 mi3013+92872+92872+92834(Top 10%)2710(Top 17%)2710(Top 48%)
25K15.53 mi2.42 mi2958+552818+542818+542878(Top 10%)2739(Top 17%)2739(Top 49%)
30K18.64 mi3.11 mi2879+792743+752743+752771(Top 10%)2623(Top 16%)2623(Top 46%)
20M20.00 mi1.36 mi2811+682677+662677+662514(Top 9%)2368(Top 15%)2368(Top 42%)
21M21.00 mi1.00 mi2744+672612+652612+652211(Top 8%)2067(Top 13%)2067(Top 37%)
35K21.75 mi0.75 mi2708+362576+362576+362308(Top 8%)2160(Top 13%)2160(Top 38%)
23M23.00 mi1.25 mi2664+442531+452531+452596(Top 9%)2399(Top 15%)2399(Top 43%)
24M24.00 mi1.00 mi2631+332498+332498+332808(Top 10%)2575(Top 16%)2575(Top 46%)
40K24.85 mi0.85 mi2623+82487+112487+113164(Top 11%)2837(Top 18%)2837(Top 50%)
25.2M25.20 mi0.35 mi2626-3248724873379(Top 12%)2969(Top 18%)2969(Top 53%)
Finish26.22 mi1.02 mi2621+52481+62481+63211(Top 11%)2843(Top 18%)2843(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3243

Males

3083

M18-39

3083

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2877

Males

2739

M18-39

2739

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3243

Males

3083

M18-39

3083

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

3170

Males

3010

M18-39

3010

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2834

Males

2710

M18-39

2710

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2878

Males

2739

M18-39

2739

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2771

Males

2623

M18-39

2623

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2514

Males

2368

M18-39

2368

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2211

Males

2067

M18-39

2067

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2308

Males

2160

M18-39

2160

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2596

Males

2399

M18-39

2399

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2808

Males

2575

M18-39

2575

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3164

Males

2837

M18-39

2837

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3379

Males

2969

M18-39

2969

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

3211

Males

2843

M18-39

2843

Passing Analysis

Category:
Athletes Passed
995
Passed By
652
Net Change
+343
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2964
5K → 10K17097+73#2964#2891
10K → 15K42160-118#2891#3009
15K → 20K8598-13#3009#3022
20K → Half1910+9#3022#3013
Half → 25K9540+55#3013#2958
25K → 30K15273+79#2958#2879
30K → 20M8517+68#2879#2811
20M → 21M8013+67#2811#2744
21M → 35K459+36#2744#2708
35K → 23M7430+44#2708#2664
23M → 24M5825+33#2664#2631
24M → 40K3931+8#2631#2623
40K → 25.2M1720-3#2623#2626
25.2M → Finish3429+5#2626#2621
TOTALS995652+343
📊

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