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BOSTON MARATHON 2025

John-Mark Chesney

Bib: 8120•M

TN

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 16%
Gender (Male)
#0 / 16105
Top 25%
Masters (Masters Men)
#0 / 10463
Top 11%
Division (M40-44)
#0 / 2247
Top 30%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:05
Rank: #6203
Start → 5K
21:05 | 6:47/mi
10K· 6.21 mi
42:16
Rank: #6316 (-113)
5K → 10K
21:11 | 6:49/mi
15K· 9.32 mi
1:03:34
Rank: #6405 (-89)
10K → 15K
21:18 | 6:51/mi
20K· 12.43 mi
1:24:47
Rank: #6133 (+272)
15K → 20K
21:13 | 6:50/mi
Half· 13.11 mi
1:29:25
Rank: #6130 (+3)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:45:55
Rank: #5879 (+251)
Half → 25K
16:30 | 6:48/mi
30K· 18.64 mi
2:07:23
Rank: #5455 (+424)
25K → 30K
21:28 | 6:55/mi
20M
2:16:49
Rank: #5277 (+178)
30K → 20M
9:26 | 6:57/mi
21M
2:23:59
Rank: #5066 (+211)
20M → 21M
7:10 | 7:10/mi
35K· 21.75 mi
2:29:00
Rank: #4985 (+81)
21M → 35K
5:01 | 6:42/mi
23M
2:37:24
Rank: #4733 (+252)
35K → 23M
8:24 | 6:43/mi
24M
2:44:13
Rank: #4647 (+86)
23M → 24M
6:49 | 6:49/mi
40K· 24.85 mi
2:50:04
Rank: #4562 (+85)
24M → 40K
5:51 | 6:51/mi
25.2M
2:52:37
Rank: #4531 (+31)
40K → 25.2M
2:33 | 7:24/mi
Finish· 26.22 mi
2:59:15
Rank: #4431 (+100)
25.2M → Finish
6:38 | 6:31/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:29:25
Pace6:49 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:50
Pace6:51 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:29:1421:056:4721:05
6:47
-
10K
6.21 mi10:50:2542:166:4821:11
6:49
+0:02
15K
9.32 mi11:11:431:03:346:4921:18
6:51
+0:02
20K
12.43 mi11:32:561:24:476:4921:13
6:50
-0:01
Half
13.11 mi11:37:341:29:256:494:38
6:47
-0:03
25K
15.53 mi11:54:041:45:556:4916:30
6:48
+0:01
30K
18.64 mi12:15:322:07:236:5021:28
6:55
+0:07
20M
20.00 mi12:24:582:16:496:509:26
6:57
+0:02
21M
21.00 mi12:32:082:23:596:517:10
7:10
+0:13
35K
21.75 mi12:37:092:29:006:515:01
6:42
-0:28
23M
23.00 mi12:45:332:37:246:518:24
6:43
+0:01
24M
24.00 mi12:52:222:44:136:516:49
6:49
+0:06
40K
24.85 mi12:58:132:50:046:515:51
6:51
+0:02
25.2M
25.20 mi13:00:462:52:376:512:33
7:24
+0:33
Finish
26.22 mi13:07:242:59:156:506:38
6:31
-0:53

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

6:31 /mi

Average Pace

6:50 /mi

Slowest Pace

7:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:42

99% of race

Time at Steady Pace

2:33

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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 mi10:29:1421:056:4721:05
6:47
#6203
10K
6.21 mi10:50:2542:166:4821:11
6:49
#6316
15K
9.32 mi11:11:431:03:346:4921:18
6:51
#6405
20K
12.43 mi11:32:561:24:476:4921:13
6:50
#6133
Half
13.11 mi11:37:341:29:256:494:38
6:47
#6130
25K
15.53 mi11:54:041:45:556:4916:30
6:48
#5879
30K
18.64 mi12:15:322:07:236:5021:28
6:55
#5455
20M
20.00 mi12:24:582:16:496:509:26
6:57
#5277
21M
21.00 mi12:32:082:23:596:517:10
7:10
#5066
35K
21.75 mi12:37:092:29:006:515:01
6:42
#4985
23M
23.00 mi12:45:332:37:246:518:24
6:43
#4733
24M
24.00 mi12:52:222:44:136:516:49
6:49
#4647
40K
24.85 mi12:58:132:50:046:515:51
6:51
#4562
25.2M
25.20 mi13:00:462:52:376:512:33
7:24
#4531
Finish
26.22 mi13:07:242:59:156:506:38
6:31
#4431
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6203568356836636(Top 23%)5974(Top 37%)5974(Top 266%)
10K6.21 mi3.10 mi6316-1135778-955778-956581(Top 23%)5947(Top 37%)5947(Top 265%)
15K9.32 mi3.11 mi6405-895828-505828-506636(Top 23%)5974(Top 37%)5974(Top 266%)
20K12.43 mi3.11 mi6133+2725593+2355593+2355589(Top 20%)5096(Top 32%)5096(Top 227%)
Half13.11 mi0.68 mi6130+35587+65587+66076(Top 21%)5497(Top 34%)5497(Top 245%)
25K15.53 mi2.42 mi5879+2515361+2265361+2264916(Top 17%)4517(Top 28%)4517(Top 201%)
30K18.64 mi3.11 mi5455+4245003+3585003+3584142(Top 15%)3809(Top 24%)3809(Top 170%)
20M20.00 mi1.36 mi5277+1784837+1664837+1663784(Top 13%)3483(Top 22%)3483(Top 155%)
21M21.00 mi1.00 mi5066+2114655+1824655+1823018(Top 11%)2792(Top 17%)2792(Top 124%)
35K21.75 mi0.75 mi4985+814579+764579+763583(Top 13%)3256(Top 20%)3256(Top 145%)
23M23.00 mi1.25 mi4733+2524355+2244355+2242312(Top 8%)2155(Top 13%)2155(Top 96%)
24M24.00 mi1.00 mi4647+864276+794276+793622(Top 13%)3241(Top 20%)3241(Top 144%)
40K24.85 mi0.85 mi4562+854191+854191+853075(Top 11%)2771(Top 17%)2771(Top 123%)
25.2M25.20 mi0.35 mi4531+314159+324159+322990(Top 11%)2669(Top 17%)2669(Top 119%)
Finish26.22 mi1.02 mi4431+1004068+914068+912889(Top 10%)2584(Top 16%)2584(Top 115%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6636

Males

5974

M40-44

5974

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

6581

Males

5947

M40-44

5947

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6636

Males

5974

M40-44

5974

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5589

Males

5096

M40-44

5096

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

6076

Males

5497

M40-44

5497

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4916

Males

4517

M40-44

4517

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4142

Males

3809

M40-44

3809

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3784

Males

3483

M40-44

3483

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3018

Males

2792

M40-44

2792

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3583

Males

3256

M40-44

3256

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2312

Males

2155

M40-44

2155

23M→24M

23.0 - 24.0 mi

Top 13%
×6stories
+12ft-82ft

Overall

3622

Males

3241

M40-44

3241

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3075

Males

2771

M40-44

2771

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2990

Males

2669

M40-44

2669

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2889

Males

2584

M40-44

2584

Passing Analysis

Category:
Athletes Passed
2397
Passed By
625
Net Change
+1772
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6203
5K → 10K147260-113#6203#6316
10K → 15K122211-89#6316#6405
15K → 20K30432+272#6405#6133
20K → Half2219+3#6133#6130
Half → 25K26817+251#6130#5879
25K → 30K4306+424#5879#5455
30K → 20M18911+178#5455#5277
20M → 21M2143+211#5277#5066
21M → 35K9817+81#5066#4985
35K → 23M2531+252#4985#4733
23M → 24M9913+86#4733#4647
24M → 40K10116+85#4647#4562
40K → 25.2M4110+31#4562#4531
25.2M → Finish1099+100#4531#4431
TOTALS2397625+1772
📊

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