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BOSTON MARATHON 2025

Jeffrey Stern

Bib: 917•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 16%
Division (M18-39)
#0 / 5642
Top 36%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:49
Rank: #2965
Start → 5K
6:23/mi
19:49 split
10K· 6.21 mi
39:43
Rank: #3009 (-44)
5K → 10K
6:24/mi
19:54 split
15K· 9.32 mi
59:36
Rank: #2973 (+36)
10K → 15K
6:24/mi
19:53 split
20K· 12.43 mi
1:19:34
Rank: #2863 (+110)
15K → 20K
6:26/mi
19:58 split
Half· 13.11 mi
1:23:57
Rank: #2881 (-18)
20K → Half
6:25/mi
4:23 split
25K· 15.53 mi
1:39:35
Rank: #2808 (+73)
Half → 25K
6:27/mi
15:38 split
30K· 18.64 mi
2:00:24
Rank: #2775 (+33)
25K → 30K
6:42/mi
20:49 split
20M
2:09:43
Rank: #2791 (-16)
30K → 20M
6:51/mi
9:19 split
21M
2:16:51
Rank: #2755 (+36)
20M → 21M
7:08/mi
7:08 split
35K· 21.75 mi
2:21:50
Rank: #2764 (-9)
21M → 35K
6:40/mi
4:59 split
23M
2:30:40
Rank: #2795 (-31)
35K → 23M
7:03/mi
8:50 split
24M
2:37:27
Rank: #2775 (+20)
23M → 24M
6:47/mi
6:47 split
40K· 24.85 mi
2:43:14
Rank: #2742 (+33)
24M → 40K
6:46/mi
5:47 split
25.2M
2:45:46
Rank: #2721 (+21)
40K → 25.2M
7:21/mi
2:32 split
Finish· 26.22 mi
2:52:11
Rank: #2669 (+52)
25.2M → Finish
6:18/mi
6:25 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:57
Pace6:24 /mi
2nd Half
Distance13.11 mi
Time1:28:14
Pace6:44 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:0419:496:2319:49
6:23
-
10K
6.21 mi10:39:5839:436:2419:54
6:24
+0:01
15K
9.32 mi10:59:5159:366:2419:53
6:24
0:00
20K
12.43 mi11:19:491:19:346:2419:58
6:26
+0:02
Half
13.11 mi11:24:121:23:576:244:23
6:25
-0:01
25K
15.53 mi11:39:501:39:356:2515:38
6:27
+0:02
30K
18.64 mi12:00:392:00:246:2820:49
6:42
+0:15
20M
20.00 mi12:09:582:09:436:299:19
6:51
+0:09
21M
21.00 mi12:17:062:16:516:317:08
7:08
+0:17
35K
21.75 mi12:22:052:21:506:314:59
6:40
-0:28
23M
23.00 mi12:30:552:30:406:338:50
7:03
+0:23
24M
24.00 mi12:37:422:37:276:346:47
6:47
-0:16
40K
24.85 mi12:43:292:43:146:345:47
6:46
-0:01
25.2M
25.20 mi12:46:012:45:466:352:32
7:21
+0:35
Finish
26.22 mi12:52:262:52:116:346:25
6:18
-1:03

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

6:18 /mi

Average Pace

6:34 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:41

89% of race

Time at Steady Pace

18:30

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:34 /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 mi10:20:0419:496:2319:49
6:23
#2965
10K
6.21 mi10:39:5839:436:2419:54
6:24
#3009
15K
9.32 mi10:59:5159:366:2419:53
6:24
#2973
20K
12.43 mi11:19:491:19:346:2419:58
6:26
#2863
Half
13.11 mi11:24:121:23:576:244:23
6:25
#2881
25K
15.53 mi11:39:501:39:356:2515:38
6:27
#2808
30K
18.64 mi12:00:392:00:246:2820:49
6:42
#2775
20M
20.00 mi12:09:582:09:436:299:19
6:51
#2791
21M
21.00 mi12:17:062:16:516:317:08
7:08
#2755
35K
21.75 mi12:22:052:21:506:314:59
6:40
#2764
23M
23.00 mi12:30:552:30:406:338:50
7:03
#2795
24M
24.00 mi12:37:422:37:276:346:47
6:47
#2775
40K
24.85 mi12:43:292:43:146:345:47
6:46
#2742
25.2M
25.20 mi12:46:012:45:466:352:32
7:21
#2721
Finish
26.22 mi12:52:262:52:116:346:25
6:18
#2669
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2965282128212949(Top 10%)2813(Top 17%)2813(Top 50%)
10K6.21 mi3.10 mi3009-442863-422863-423079(Top 11%)2932(Top 18%)2932(Top 52%)
15K9.32 mi3.11 mi2973+362832+312832+312949(Top 10%)2813(Top 17%)2813(Top 50%)
20K12.43 mi3.11 mi2863+1102730+1022730+1022685(Top 9%)2555(Top 16%)2555(Top 45%)
Half13.11 mi0.68 mi2881-182746-162746-163250(Top 11%)3091(Top 19%)3091(Top 55%)
25K15.53 mi2.42 mi2808+732679+672679+672619(Top 9%)2493(Top 15%)2493(Top 44%)
30K18.64 mi3.11 mi2775+332645+342645+342888(Top 10%)2726(Top 17%)2726(Top 48%)
20M20.00 mi1.36 mi2791-162658-132658-133252(Top 11%)3008(Top 19%)3008(Top 53%)
21M21.00 mi1.00 mi2755+362623+352623+352841(Top 10%)2635(Top 16%)2635(Top 47%)
35K21.75 mi0.75 mi2764-92629-62629-63303(Top 12%)3019(Top 19%)3019(Top 54%)
23M23.00 mi1.25 mi2795-312651-222651-224079(Top 14%)3638(Top 23%)3638(Top 64%)
24M24.00 mi1.00 mi2775+202632+192632+193411(Top 12%)3066(Top 19%)3066(Top 54%)
40K24.85 mi0.85 mi2742+332599+332599+332687(Top 9%)2444(Top 15%)2444(Top 43%)
25.2M25.20 mi0.35 mi2721+212576+232576+232775(Top 10%)2477(Top 15%)2477(Top 44%)
Finish26.22 mi1.02 mi2669+522525+512525+511892(Top 7%)1747(Top 11%)1747(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21story building
+97ft-345ft

Overall

2949

Males

2813

M18-39

2813

5K→10K

3.1 - 6.2 mi

Top 11%
×5story building
+79ft-138ft

Overall

3079

Males

2932

M18-39

2932

10K→15K

6.2 - 9.3 mi

Top 10%
×3story building
+67ft-78ft

Overall

2949

Males

2813

M18-39

2813

15K→20K

9.3 - 12.4 mi

Top 9%
×5story building
+106ft-86ft

Overall

2685

Males

2555

M18-39

2555

20K→Half

12.4 - 13.1 mi

Top 11%
×2story building
+19ft-37ft

Overall

3250

Males

3091

M18-39

3091

Half→25K

13.1 - 15.5 mi

Top 9%
×4story building
+66ft-88ft

Overall

2619

Males

2493

M18-39

2493

25K→30K

15.5 - 18.6 mi

Top 10%
×9story building
+181ft-148ft

Overall

2888

Males

2726

M18-39

2726

30K→20M

18.6 - 20.0 mi

Top 11%
×5story building
+64ft-50ft

Overall

3252

Males

3008

M18-39

3008

20M→21M

20.0 - 21.0 mi

Top 10%
×8story building
+106ft-24ft

Overall

2841

Males

2635

M18-39

2635

21M→35K

21.0 - 21.8 mi

Top 12%
×7story building
+17ft-86ft

Overall

3303

Males

3019

M18-39

3019

35K→23M

21.8 - 23.0 mi

Top 14%
×5story building
+23ft-63ft

Overall

4079

Males

3638

M18-39

3638

23M→24M

23.0 - 24.0 mi

Top 12%
×6story building
+12ft-82ft

Overall

3411

Males

3066

M18-39

3066

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2687

Males

2444

M18-39

2444

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2775

Males

2477

M18-39

2477

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2story building
+22ft-21ft

Overall

1892

Males

1747

M18-39

1747

Passing Analysis

Category:
Athletes Passed
965
Passed By
669
Net Change
+296
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2965
5K → 10K115159-44#2965#3009
10K → 15K10872+36#3009#2973
15K → 20K14232+110#2973#2863
20K → Half927-18#2863#2881
Half → 25K9724+73#2881#2808
25K → 30K12491+33#2808#2775
30K → 20M4763-16#2775#2791
20M → 21M6125+36#2791#2755
21M → 35K2635-9#2755#2764
35K → 23M4172-31#2764#2795
23M → 24M4929+20#2795#2775
24M → 40K5219+33#2775#2742
40K → 25.2M3110+21#2742#2721
25.2M → Finish6311+52#2721#2669
TOTALS965669+296
📊

Passing Visuals

Category:
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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