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BOSTON MARATHON 2025

Jonathan Stern

Bib: 2226•M

TX

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 8%
Gender (Male)
#0 / 16105
Top 13%
Division (M18-39)
#0 / 5642
Top 31%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:09
Rank: #3719
Start → 5K
20:09 | 6:29/mi
10K· 6.21 mi
40:00
Rank: #3312 (+407)
5K → 10K
19:51 | 6:23/mi
15K· 9.32 mi
59:53
Rank: #3163 (+149)
10K → 15K
19:53 | 6:24/mi
20K· 12.43 mi
1:20:21
Rank: #3255 (-92)
15K → 20K
20:28 | 6:35/mi
Half· 13.11 mi
1:24:42
Rank: #3234 (+21)
20K → Half
4:21 | 6:23/mi
25K· 15.53 mi
1:40:12
Rank: #3044 (+190)
Half → 25K
15:30 | 6:24/mi
30K· 18.64 mi
2:00:40
Rank: #2869 (+175)
25K → 30K
20:28 | 6:35/mi
20M
2:09:32
Rank: #2743 (+126)
30K → 20M
8:52 | 6:31/mi
21M
2:16:00
Rank: #2522 (+221)
20M → 21M
6:28 | 6:28/mi
35K· 21.75 mi
2:20:34
Rank: #2432 (+90)
21M → 35K
4:34 | 6:06/mi
23M
2:28:31
Rank: #2297 (+135)
35K → 23M
7:57 | 6:21/mi
24M
2:34:53
Rank: #2234 (+63)
23M → 24M
6:22 | 6:22/mi
40K· 24.85 mi
2:40:29
Rank: #2187 (+47)
24M → 40K
5:36 | 6:33/mi
25.2M
2:42:58
Rank: #2169 (+18)
40K → 25.2M
2:29 | 7:12/mi
Finish· 26.22 mi
2:49:50
Rank: #2236 (-67)
25.2M → Finish
6:52 | 6:44/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:24:42
Pace6:28 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:25:08
Pace6:30 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:5520:096:2920:09
6:29
-
10K
6.21 mi10:40:4640:006:2619:51
6:23
-0:06
15K
9.32 mi11:00:3959:536:2519:53
6:24
+0:01
20K
12.43 mi11:21:071:20:216:2820:28
6:35
+0:11
Half
13.11 mi11:25:281:24:426:284:21
6:23
-0:12
25K
15.53 mi11:40:581:40:126:2715:30
6:24
+0:01
30K
18.64 mi12:01:262:00:406:2820:28
6:35
+0:11
20M
20.00 mi12:10:182:09:326:298:52
6:31
-0:04
21M
21.00 mi12:16:462:16:006:296:28
6:28
-0:03
35K
21.75 mi12:21:202:20:346:284:34
6:06
-0:22
23M
23.00 mi12:29:172:28:316:277:57
6:21
+0:15
24M
24.00 mi12:35:392:34:536:276:22
6:22
+0:01
40K
24.85 mi12:41:152:40:296:275:36
6:33
+0:11
25.2M
25.20 mi12:43:442:42:586:282:29
7:12
+0:39
Finish
26.22 mi12:50:362:49:506:296:52
6:44
-0:28

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

6:06 /mi

Average Pace

6:29 /mi

Slowest Pace

7:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:29

94% of race

Time at Steady Pace

6:52

4% of race

Time at Slower Pace

2:29

1% of race

Average Pace: 6:29 /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 mi10:20:5520:096:2920:09
6:29
#3719
10K
6.21 mi10:40:4640:006:2619:51
6:23
#3312
15K
9.32 mi11:00:3959:536:2519:53
6:24
#3163
20K
12.43 mi11:21:071:20:216:2820:28
6:35
#3255
Half
13.11 mi11:25:281:24:426:284:21
6:23
#3234
25K
15.53 mi11:40:581:40:126:2715:30
6:24
#3044
30K
18.64 mi12:01:262:00:406:2820:28
6:35
#2869
20M
20.00 mi12:10:182:09:326:298:52
6:31
#2743
21M
21.00 mi12:16:462:16:006:296:28
6:28
#2522
35K
21.75 mi12:21:202:20:346:284:34
6:06
#2432
23M
23.00 mi12:29:172:28:316:277:57
6:21
#2297
24M
24.00 mi12:35:392:34:536:276:22
6:22
#2234
40K
24.85 mi12:41:152:40:296:275:36
6:33
#2187
25.2M
25.20 mi12:43:442:42:586:282:29
7:12
#2169
Finish
26.22 mi12:50:362:49:506:296:52
6:44
#2236
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3719352235222928(Top 10%)2792(Top 17%)2792(Top 49%)
10K6.21 mi3.10 mi3312+4073146+3763146+3762951(Top 10%)2809(Top 17%)2809(Top 50%)
15K9.32 mi3.11 mi3163+1493010+1363010+1362928(Top 10%)2792(Top 17%)2792(Top 49%)
20K12.43 mi3.11 mi3255-923098-883098-883610(Top 13%)3409(Top 21%)3409(Top 60%)
Half13.11 mi0.68 mi3234+213080+183080+182880(Top 10%)2747(Top 17%)2747(Top 49%)
25K15.53 mi2.42 mi3044+1902901+1792901+1792324(Top 8%)2209(Top 14%)2209(Top 39%)
30K18.64 mi3.11 mi2869+1752733+1682733+1682356(Top 8%)2233(Top 14%)2233(Top 40%)
20M20.00 mi1.36 mi2743+1262613+1202613+1201713(Top 6%)1619(Top 10%)1619(Top 29%)
21M21.00 mi1.00 mi2522+2212405+2082405+208630(Top 2%)594(Top 4%)594(Top 11%)
35K21.75 mi0.75 mi2432+902320+852320+85983(Top 3%)926(Top 6%)926(Top 16%)
23M23.00 mi1.25 mi2297+1352189+1312189+1311014(Top 4%)957(Top 6%)957(Top 17%)
24M24.00 mi1.00 mi2234+632125+642125+641529(Top 5%)1428(Top 9%)1428(Top 25%)
40K24.85 mi0.85 mi2187+472078+472078+471784(Top 6%)1647(Top 10%)1647(Top 29%)
25.2M25.20 mi0.35 mi2169+182060+182060+182105(Top 7%)1894(Top 12%)1894(Top 34%)
Finish26.22 mi1.02 mi2236-672121-612121-614082(Top 14%)3485(Top 22%)3485(Top 62%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2928

Males

2792

M18-39

2792

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2951

Males

2809

M18-39

2809

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2928

Males

2792

M18-39

2792

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3610

Males

3409

M18-39

3409

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2880

Males

2747

M18-39

2747

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2324

Males

2209

M18-39

2209

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2356

Males

2233

M18-39

2233

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1713

Males

1619

M18-39

1619

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

630

Males

594

M18-39

594

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

983

Males

926

M18-39

926

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1014

Males

957

M18-39

957

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1529

Males

1428

M18-39

1428

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1784

Males

1647

M18-39

1647

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

2105

Males

1894

M18-39

1894

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

4082

Males

3485

M18-39

3485

Passing Analysis

Category:
Athletes Passed
1849
Passed By
366
Net Change
+1483
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3719
5K → 10K43528+407#3719#3312
10K → 15K17829+149#3312#3163
15K → 20K62154-92#3163#3255
20K → Half287+21#3255#3234
Half → 25K1922+190#3234#3044
25K → 30K21035+175#3044#2869
30K → 20M1315+126#2869#2743
20M → 21M2210+221#2743#2522
21M → 35K900+90#2522#2432
35K → 23M1361+135#2432#2297
23M → 24M7310+63#2297#2234
24M → 40K5811+47#2234#2187
40K → 25.2M235+18#2187#2169
25.2M → Finish1279-67#2169#2236
TOTALS1849366+1483
📊

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