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BOSTON MARATHON 2025

Jason Korbel

Bib: 5299•M

IA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Masters (Masters Men)
#0 / 10463
Top 3%
Division (M45-49)
#0 / 2386
Top 4%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:23
Rank: #4265
Start → 5K
20:23 | 6:34/mi
10K· 6.21 mi
40:27
Rank: #3845 (+420)
5K → 10K
20:04 | 6:28/mi
15K· 9.32 mi
1:00:57
Rank: #3947 (-102)
10K → 15K
20:30 | 6:36/mi
20K· 12.43 mi
1:20:32
Rank: #3357 (+590)
15K → 20K
19:35 | 6:18/mi
Half· 13.11 mi
1:24:51
Rank: #3316 (+41)
20K → Half
4:19 | 6:20/mi
25K· 15.53 mi
1:40:21
Rank: #3116 (+200)
Half → 25K
15:30 | 6:24/mi
30K· 18.64 mi
2:00:24
Rank: #2772 (+344)
25K → 30K
20:03 | 6:27/mi
20M
2:09:19
Rank: #2663 (+109)
30K → 20M
8:55 | 6:34/mi
21M
2:16:08
Rank: #2565 (+98)
20M → 21M
6:49 | 6:49/mi
35K· 21.75 mi
2:20:54
Rank: #2514 (+51)
21M → 35K
4:46 | 6:22/mi
23M
2:29:02
Rank: #2397 (+117)
35K → 23M
8:08 | 6:30/mi
24M
2:35:19
Rank: #2325 (+72)
23M → 24M
6:17 | 6:17/mi
40K· 24.85 mi
2:40:47
Rank: #2250 (+75)
24M → 40K
5:28 | 6:24/mi
25.2M
2:43:06
Rank: #2197 (+53)
40K → 25.2M
2:19 | 6:43/mi
Finish· 26.22 mi
2:49:13
Rank: #2112 (+85)
25.2M → Finish
6:07 | 6:00/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:24:51
Pace6:28 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:24:22
Pace6:26 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5820:236:3420:23
6:34
-
10K
6.21 mi10:44:0240:276:3120:04
6:28
-0:06
15K
9.32 mi11:04:321:00:576:3220:30
6:36
+0:08
20K
12.43 mi11:24:071:20:326:2919:35
6:18
-0:18
Half
13.11 mi11:28:261:24:516:284:19
6:20
+0:02
25K
15.53 mi11:43:561:40:216:2815:30
6:24
+0:04
30K
18.64 mi12:03:592:00:246:2820:03
6:27
+0:03
20M
20.00 mi12:12:542:09:196:288:55
6:34
+0:07
21M
21.00 mi12:19:432:16:086:296:49
6:49
+0:15
35K
21.75 mi12:24:292:20:546:294:46
6:22
-0:27
23M
23.00 mi12:32:372:29:026:298:08
6:30
+0:08
24M
24.00 mi12:38:542:35:196:286:17
6:17
-0:13
40K
24.85 mi12:44:222:40:476:285:28
6:24
+0:07
25.2M
25.20 mi12:46:412:43:066:282:19
6:43
+0:19
Finish
26.22 mi12:52:482:49:136:286:07
6:00
-0:43

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

6:00 /mi

Average Pace

6:28 /mi

Slowest Pace

6:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:05

95% of race

Time at Steady Pace

9:08

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:27 /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 mi10:23:5820:236:3420:23
6:34
#4265
10K
6.21 mi10:44:0240:276:3120:04
6:28
#3845
15K
9.32 mi11:04:321:00:576:3220:30
6:36
#3947
20K
12.43 mi11:24:071:20:326:2919:35
6:18
#3357
Half
13.11 mi11:28:261:24:516:284:19
6:20
#3316
25K
15.53 mi11:43:561:40:216:2815:30
6:24
#3116
30K
18.64 mi12:03:592:00:246:2820:03
6:27
#2772
20M
20.00 mi12:12:542:09:196:288:55
6:34
#2663
21M
21.00 mi12:19:432:16:086:296:49
6:49
#2565
35K
21.75 mi12:24:292:20:546:294:46
6:22
#2514
23M
23.00 mi12:32:372:29:026:298:08
6:30
#2397
24M
24.00 mi12:38:542:35:196:286:17
6:17
#2325
40K
24.85 mi12:44:222:40:476:285:28
6:24
#2250
25.2M
25.20 mi12:46:412:43:066:282:19
6:43
#2197
Finish
26.22 mi12:52:482:49:136:286:07
6:00
#2112
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi4265400940094194(Top 15%)3943(Top 24%)3943(Top 165%)
10K6.21 mi3.10 mi3845+4203636+3733636+3733411(Top 12%)3235(Top 20%)3235(Top 136%)
15K9.32 mi3.11 mi3947-1023719-833719-834194(Top 15%)3943(Top 24%)3943(Top 165%)
20K12.43 mi3.11 mi3357+5903186+5333186+5332019(Top 7%)1924(Top 12%)1924(Top 81%)
Half13.11 mi0.68 mi3316+413153+333153+332613(Top 9%)2496(Top 15%)2496(Top 105%)
25K15.53 mi2.42 mi3116+2002970+1832970+1832317(Top 8%)2202(Top 14%)2202(Top 92%)
30K18.64 mi3.11 mi2772+3442642+3282642+3281783(Top 6%)1694(Top 11%)1694(Top 71%)
20M20.00 mi1.36 mi2663+1092538+1042538+1041855(Top 7%)1755(Top 11%)1755(Top 74%)
21M21.00 mi1.00 mi2565+982445+932445+931581(Top 6%)1490(Top 9%)1490(Top 62%)
35K21.75 mi0.75 mi2514+512394+512394+511884(Top 7%)1768(Top 11%)1768(Top 74%)
23M23.00 mi1.25 mi2397+1172282+1122282+1121438(Top 5%)1354(Top 8%)1354(Top 57%)
24M24.00 mi1.00 mi2325+722213+692213+691268(Top 4%)1187(Top 7%)1187(Top 50%)
40K24.85 mi0.85 mi2250+752138+752138+751248(Top 4%)1161(Top 7%)1161(Top 49%)
25.2M25.20 mi0.35 mi2197+532087+512087+51808(Top 3%)751(Top 5%)751(Top 31%)
Finish26.22 mi1.02 mi2112+852004+832004+83927(Top 3%)872(Top 5%)872(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4194

Males

3943

M45-49

3943

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3411

Males

3235

M45-49

3235

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4194

Males

3943

M45-49

3943

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

2019

Males

1924

M45-49

1924

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2613

Males

2496

M45-49

2496

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2317

Males

2202

M45-49

2202

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1783

Males

1694

M45-49

1694

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1855

Males

1755

M45-49

1755

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1581

Males

1490

M45-49

1490

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1884

Males

1768

M45-49

1768

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1438

Males

1354

M45-49

1354

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1268

Males

1187

M45-49

1187

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1248

Males

1161

M45-49

1161

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

808

Males

751

M45-49

751

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

927

Males

872

M45-49

872

Passing Analysis

Category:
Athletes Passed
2407
Passed By
254
Net Change
+2153
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4265
5K → 10K44626+420#4265#3845
10K → 15K65167-102#3845#3947
15K → 20K5900+590#3947#3357
20K → Half443+41#3357#3316
Half → 25K2055+200#3316#3116
25K → 30K3528+344#3116#2772
30K → 20M12112+109#2772#2663
20M → 21M10810+98#2663#2565
21M → 35K576+51#2565#2514
35K → 23M1225+117#2514#2397
23M → 24M764+72#2397#2325
24M → 40K805+75#2325#2250
40K → 25.2M541+53#2250#2197
25.2M → Finish872+85#2197#2112
TOTALS2407254+2153
📊

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