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BOSTON MARATHON 2025

Eric Kronenberg

Bib: 24295•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M65-69)
#0 / 639
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:58/mi
27:52
↑ 97↓ 3451.5%
10K· 6.21 mi
9:09/mi
56:19
↑ 79↓ 1380.4%
15K· 9.32 mi
9:07/mi
1:24:37
↑ 67↓ 78
20K· 12.43 mi
9:15/mi
1:53:21
↑ 106↓ 860.1%
Half· 13.11 mi
9:16/mi
1:59:40
↑ 19↓ 370.5%
25K· 15.53 mi
10:03/mi
2:24:03
↑ 66↓ 880.2%
30K· 18.64 mi
10:18/mi
2:56:03
↑ 181↓ 1480.2%
20M
10:39/mi
3:10:31
↑ 64↓ 500.2%
21M
11:15/mi
3:21:46
↑ 106↓ 241.6%
35K· 21.75 mi
10:28/mi
3:29:36
↑ 17↓ 861.7%
23M
10:47/mi
3:43:06
↑ 23↓ 630.6%
24M
10:41/mi
3:53:47
↓ 821.3%
40K· 24.85 mi
10:43/mi
4:02:57
↓ 200.3%
25.2M
11:30/mi
4:06:55
↑ 13↓ 160.2%
Finish· 26.22 mi
10:16/mi
4:17:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:40
Pace9:08 /mi
2nd Half
Distance13.11 mi
Time2:17:43
Pace10:30 /mi
📊Positive Split: 15.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:2827:528:5827:52
8:58
-
10K
6.21 mi11:53:5556:199:0428:27
9:09
+0:11
15K
9.32 mi12:22:131:24:379:0528:18
9:07
-0:02
20K
12.43 mi12:50:571:53:219:0728:44
9:15
+0:08
Half
13.11 mi12:57:161:59:409:086:19
9:16
+0:01
25K
15.53 mi13:21:392:24:039:1624:23
10:03
+0:47
30K
18.64 mi13:53:392:56:039:2732:00
10:18
+0:15
20M
20.00 mi14:08:073:10:319:3214:28
10:39
+0:21
21M
21.00 mi14:19:223:21:469:3611:15
11:15
+0:36
35K
21.75 mi14:27:123:29:369:387:50
10:28
-0:47
23M
23.00 mi14:40:423:43:069:4213:30
10:47
+0:19
24M
24.00 mi14:51:233:53:479:4410:41
10:41
-0:06
40K
24.85 mi15:00:334:02:579:469:10
10:43
+0:02
25.2M
25.20 mi15:04:314:06:559:483:58
11:30
+0:47
Finish
26.22 mi15:14:594:17:239:4910:28
10:16
-1:14

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

8:58 /mi

Average Pace

9:49 /mi

Slowest Pace

11:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:40

46% of race

Time at Steady Pace

1:39:50

39% of race

Time at Slower Pace

37:53

15% of race

Average Pace: 9:49 /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 mi11:25:2827:528:5827:52
8:58
#22291
10K
6.21 mi11:53:5556:199:0428:27
9:09
#22675
15K
9.32 mi12:22:131:24:379:0528:18
9:07
#22614
20K
12.43 mi12:50:571:53:219:0728:44
9:15
#22447
Half
13.11 mi12:57:161:59:409:086:19
9:16
#22468
25K
15.53 mi13:21:392:24:039:1624:23
10:03
#22693
30K
18.64 mi13:53:392:56:039:2732:00
10:18
#22643
20M
20.00 mi14:08:073:10:319:3214:28
10:39
#22643
21M
21.00 mi14:19:223:21:469:3611:15
11:15
#22590
35K
21.75 mi14:27:123:29:369:387:50
10:28
#22589
23M
23.00 mi14:40:423:43:069:4213:30
10:47
#22594
24M
24.00 mi14:51:233:53:479:4410:41
10:41
#22609
40K
24.85 mi15:00:334:02:579:469:10
10:43
#22603
25.2M
25.20 mi15:04:314:06:559:483:58
11:30
#22595
Finish
26.22 mi15:14:594:17:239:4910:28
10:16
#22641
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi22291134401344022486(Top 79%)13601(Top 84%)13601(Top 2128%)
10K6.21 mi3.10 mi22675-38413637-19713637-19723025(Top 81%)13814(Top 86%)13814(Top 2162%)
15K9.32 mi3.11 mi22614+6113635+213635+222486(Top 79%)13601(Top 84%)13601(Top 2128%)
20K12.43 mi3.11 mi22447+16713551+8413551+8422070(Top 78%)13389(Top 83%)13389(Top 2095%)
Half13.11 mi0.68 mi22468-2113555-413555-422798(Top 80%)13702(Top 85%)13702(Top 2144%)
25K15.53 mi2.42 mi22693-22513659-10413659-10423394(Top 82%)13913(Top 86%)13913(Top 2177%)
30K18.64 mi3.11 mi22643+5013591+6813591+6822447(Top 79%)13365(Top 83%)13365(Top 2092%)
20M20.00 mi1.36 mi2264313572+1913572+1922808(Top 80%)13430(Top 83%)13430(Top 2102%)
21M21.00 mi1.00 mi22590+5313531+4113531+4122032(Top 78%)12994(Top 81%)12994(Top 2033%)
35K21.75 mi0.75 mi22589+113516+1513516+1523092(Top 81%)13432(Top 83%)13432(Top 2102%)
23M23.00 mi1.25 mi22594-513494+2213494+2222703(Top 80%)13202(Top 82%)13202(Top 2066%)
24M24.00 mi1.00 mi22609-1513471+2313471+2323273(Top 82%)13444(Top 83%)13444(Top 2104%)
40K24.85 mi0.85 mi22603+613454+1713454+1722496(Top 79%)12983(Top 81%)12983(Top 2032%)
25.2M25.20 mi0.35 mi22595+813442+1213442+1222037(Top 78%)12812(Top 80%)12812(Top 2005%)
Finish26.22 mi1.02 mi22641-4613444-213444-223719(Top 84%)13624(Top 85%)13624(Top 2132%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

22486

Males

13601

M65-69

13601

5K→10K

3.1 - 6.2 mi

Top 81%
×5story building
+79ft-138ft

Overall

23025

Males

13814

M65-69

13814

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

22486

Males

13601

M65-69

13601

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22070

Males

13389

M65-69

13389

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

22798

Males

13702

M65-69

13702

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

23394

Males

13913

M65-69

13913

25K→30K

15.5 - 18.6 mi

Top 79%
×9story building
+181ft-148ft

Overall

22447

Males

13365

M65-69

13365

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

22808

Males

13430

M65-69

13430

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

22032

Males

12994

M65-69

12994

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

23092

Males

13432

M65-69

13432

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

22703

Males

13202

M65-69

13202

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

23273

Males

13444

M65-69

13444

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

22496

Males

12983

M65-69

12983

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22037

Males

12812

M65-69

12812

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

23719

Males

13624

M65-69

13624

Passing Analysis

Category:
Athletes Passed
1315
Passed By
1665
Net Change
-350
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22291
5K → 10K119503-384#22291#22675
10K → 15K209148+61#22675#22614
15K → 20K25184+167#22614#22447
20K → Half3051-21#22447#22468
Half → 25K87312-225#22468#22693
25K → 30K190140+50#22693#22643
30K → 20M73730#22643#22643
20M → 21M10047+53#22643#22590
21M → 35K4544+1#22590#22589
35K → 23M6873-5#22589#22594
23M → 24M5368-15#22594#22609
24M → 40K4236+6#22609#22603
40K → 25.2M2416+8#22603#22595
25.2M → Finish2470-46#22595#22641
TOTALS13151665-350
📊

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