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BOSTON MARATHON 2025

John Mezger

Bib: 1848•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 8%
Division (M18-39)
#0 / 5642
Top 21%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:19
Rank: #4107
Start → 5K
20:19 | 6:32/mi
10K· 6.21 mi
40:12
Rank: #3543 (+564)
5K → 10K
19:53 | 6:24/mi
15K· 9.32 mi
59:59
Rank: #3231 (+312)
10K → 15K
19:47 | 6:22/mi
20K· 12.43 mi
1:19:37
Rank: #2894 (+337)
15K → 20K
19:38 | 6:19/mi
Half· 13.11 mi
1:23:52
Rank: #2842 (+52)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:39:08
Rank: #2631 (+211)
Half → 25K
15:16 | 6:18/mi
30K· 18.64 mi
1:58:46
Rank: #2292 (+339)
25K → 30K
19:38 | 6:19/mi
20M
2:07:26
Rank: #2175 (+117)
30K → 20M
8:40 | 6:23/mi
21M
2:13:54
Rank: #2044 (+131)
20M → 21M
6:28 | 6:28/mi
35K· 21.75 mi
2:18:21
Rank: #1927 (+117)
21M → 35K
4:27 | 5:57/mi
23M
2:26:02
Rank: #1772 (+155)
35K → 23M
7:41 | 6:08/mi
24M
2:32:01
Rank: #1663 (+109)
23M → 24M
5:59 | 5:59/mi
40K· 24.85 mi
2:37:10
Rank: #1550 (+113)
24M → 40K
5:09 | 6:01/mi
25.2M
2:39:28
Rank: #1519 (+31)
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:45:28
Rank: #1450 (+69)
25.2M → Finish
6:00 | 5:53/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:23:52
Pace6:24 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:21:36
Pace6:13 /mi
📊Negative Split: 2.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:0520:196:3220:19
6:32
-
10K
6.21 mi10:40:5840:126:2819:53
6:24
-0:08
15K
9.32 mi11:00:4559:596:2619:47
6:22
-0:02
20K
12.43 mi11:20:231:19:376:2419:38
6:19
-0:03
Half
13.11 mi11:24:381:23:526:244:15
6:14
-0:05
25K
15.53 mi11:39:541:39:086:2315:16
6:18
+0:04
30K
18.64 mi11:59:321:58:466:2219:38
6:19
+0:01
20M
20.00 mi12:08:122:07:266:228:40
6:23
+0:04
21M
21.00 mi12:14:402:13:546:236:28
6:28
+0:05
35K
21.75 mi12:19:072:18:216:224:27
5:57
-0:31
23M
23.00 mi12:26:482:26:026:217:41
6:08
+0:11
24M
24.00 mi12:32:472:32:016:205:59
5:59
-0:09
40K
24.85 mi12:37:562:37:106:195:09
6:01
+0:02
25.2M
25.20 mi12:40:142:39:286:202:18
6:40
+0:39
Finish
26.22 mi12:46:142:45:286:196:00
5:53
-0:47

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

5:53 /mi

Average Pace

6:19 /mi

Slowest Pace

6:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22:51

86% of race

Time at Steady Pace

22:37

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:19 /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 mi10:21:0520:196:3220:19
6:32
#4107
10K
6.21 mi10:40:5840:126:2819:53
6:24
#3543
15K
9.32 mi11:00:4559:596:2619:47
6:22
#3231
20K
12.43 mi11:20:231:19:376:2419:38
6:19
#2894
Half
13.11 mi11:24:381:23:526:244:15
6:14
#2842
25K
15.53 mi11:39:541:39:086:2315:16
6:18
#2631
30K
18.64 mi11:59:321:58:466:2219:38
6:19
#2292
20M
20.00 mi12:08:122:07:266:228:40
6:23
#2175
21M
21.00 mi12:14:402:13:546:236:28
6:28
#2044
35K
21.75 mi12:19:072:18:216:224:27
5:57
#1927
23M
23.00 mi12:26:482:26:026:217:41
6:08
#1772
24M
24.00 mi12:32:472:32:016:205:59
5:59
#1663
40K
24.85 mi12:37:562:37:106:195:09
6:01
#1550
25.2M
25.20 mi12:40:142:39:286:202:18
6:40
#1519
Finish
26.22 mi12:46:142:45:286:196:00
5:53
#1450
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4107387138712715(Top 10%)2585(Top 16%)2585(Top 46%)
10K6.21 mi3.10 mi3543+5643361+5103361+5103029(Top 11%)2883(Top 18%)2883(Top 51%)
15K9.32 mi3.11 mi3231+3123071+2903071+2902715(Top 10%)2585(Top 16%)2585(Top 46%)
20K12.43 mi3.11 mi2894+3372759+3122759+3122088(Top 7%)1990(Top 12%)1990(Top 35%)
Half13.11 mi0.68 mi2842+522709+502709+502082(Top 7%)1986(Top 12%)1986(Top 35%)
25K15.53 mi2.42 mi2631+2112512+1972512+1971823(Top 6%)1731(Top 11%)1731(Top 31%)
30K18.64 mi3.11 mi2292+3392187+3252187+3251268(Top 4%)1197(Top 7%)1197(Top 21%)
20M20.00 mi1.36 mi2175+1172073+1142073+1141185(Top 4%)1117(Top 7%)1117(Top 20%)
21M21.00 mi1.00 mi2044+1311945+1281945+128629(Top 2%)593(Top 4%)593(Top 11%)
35K21.75 mi0.75 mi1927+1171831+1141831+114640(Top 2%)599(Top 4%)599(Top 11%)
23M23.00 mi1.25 mi1772+1551681+1501681+150560(Top 2%)528(Top 3%)528(Top 9%)
24M24.00 mi1.00 mi1663+1091574+1071574+107560(Top 2%)524(Top 3%)524(Top 9%)
40K24.85 mi0.85 mi1550+1131465+1091465+109428(Top 2%)398(Top 2%)398(Top 7%)
25.2M25.20 mi0.35 mi1519+311435+301435+30723(Top 3%)673(Top 4%)673(Top 12%)
Finish26.22 mi1.02 mi1450+691368+671368+67661(Top 2%)622(Top 4%)622(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2715

Males

2585

M18-39

2585

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3029

Males

2883

M18-39

2883

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2715

Males

2585

M18-39

2585

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

2088

Males

1990

M18-39

1990

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

2082

Males

1986

M18-39

1986

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1823

Males

1731

M18-39

1731

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1268

Males

1197

M18-39

1197

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1185

Males

1117

M18-39

1117

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

629

Males

593

M18-39

593

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

640

Males

599

M18-39

599

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

560

Males

528

M18-39

528

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

560

Males

524

M18-39

524

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

428

Males

398

M18-39

398

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

723

Males

673

M18-39

673

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

661

Males

622

M18-39

622

Passing Analysis

Category:
Athletes Passed
2695
Passed By
38
Net Change
+2657
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4107
5K → 10K57612+564#4107#3543
10K → 15K3197+312#3543#3231
15K → 20K3392+337#3231#2894
20K → Half553+52#2894#2842
Half → 25K2154+211#2842#2631
25K → 30K3412+339#2631#2292
30K → 20M1181+117#2292#2175
20M → 21M1321+131#2175#2044
21M → 35K1170+117#2044#1927
35K → 23M1550+155#1927#1772
23M → 24M1101+109#1772#1663
24M → 40K1141+113#1663#1550
40K → 25.2M321+31#1550#1519
25.2M → Finish723+69#1519#1450
TOTALS269538+2657
📊

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