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BOSTON MARATHON 2025

Kevin Baltzer

Bib: 23315•M

NJ

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
Top 21%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:31
Rank: #18188
Start → 5K
25:31 | 8:13/mi
10K· 6.21 mi
52:04
Rank: #19114 (-926)
5K → 10K
26:33 | 8:33/mi
15K· 9.32 mi
1:18:26
Rank: #19117 (-3)
10K → 15K
26:22 | 8:29/mi
20K· 12.43 mi
1:44:56
Rank: #18922 (+195)
15K → 20K
26:30 | 8:32/mi
Half· 13.11 mi
1:50:50
Rank: #18982 (-60)
20K → Half
5:54 | 8:39/mi
25K· 15.53 mi
2:11:44
Rank: #18796 (+186)
Half → 25K
20:54 | 8:37/mi
30K· 18.64 mi
2:38:45
Rank: #18242 (+554)
25K → 30K
27:01 | 8:42/mi
20M
2:50:36
Rank: #17963 (+279)
30K → 20M
11:51 | 8:43/mi
21M
2:59:55
Rank: #17803 (+160)
20M → 21M
9:19 | 9:19/mi
35K· 21.75 mi
3:06:36
Rank: #17800 (+3)
21M → 35K
6:41 | 8:56/mi
23M
3:18:04
Rank: #17734 (+66)
35K → 23M
11:28 | 9:09/mi
24M
3:26:50
Rank: #17643 (+91)
23M → 24M
8:46 | 8:46/mi
40K· 24.85 mi
3:34:30
Rank: #17578 (+65)
24M → 40K
7:40 | 8:58/mi
25.2M
3:37:47
Rank: #17527 (+51)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
3:46:35
Rank: #17510 (+17)
25.2M → Finish
8:48 | 8:38/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:50
Pace8:27 /mi
2nd Half
Distance13.11 mi
Time1:55:45
Pace8:50 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:3725:318:1325:31
8:13
-
10K
6.21 mi11:20:1052:048:2326:33
8:33
+0:20
15K
9.32 mi11:46:321:18:268:2526:22
8:29
-0:04
20K
12.43 mi12:13:021:44:568:2726:30
8:32
+0:03
Half
13.11 mi12:18:561:50:508:275:54
8:39
+0:07
25K
15.53 mi12:39:502:11:448:2920:54
8:37
-0:02
30K
18.64 mi13:06:512:38:458:3127:01
8:42
+0:05
20M
20.00 mi13:18:422:50:368:3211:51
8:43
+0:01
21M
21.00 mi13:28:012:59:558:349:19
9:19
+0:36
35K
21.75 mi13:34:423:06:368:356:41
8:56
-0:23
23M
23.00 mi13:46:103:18:048:3711:28
9:09
+0:13
24M
24.00 mi13:54:563:26:508:378:46
8:46
-0:23
40K
24.85 mi14:02:363:34:308:387:40
8:58
+0:12
25.2M
25.20 mi14:05:533:37:478:393:17
9:31
+0:33
Finish
26.22 mi14:14:413:46:358:398:48
8:38
-0:53

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

8:13 /mi

Average Pace

8:39 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:22:31

89% of race

Time at Steady Pace

24:04

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:38 /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 mi10:53:3725:318:1325:31
8:13
#18188
10K
6.21 mi11:20:1052:048:2326:33
8:33
#19114
15K
9.32 mi11:46:321:18:268:2526:22
8:29
#19117
20K
12.43 mi12:13:021:44:568:2726:30
8:32
#18922
Half
13.11 mi12:18:561:50:508:275:54
8:39
#18982
25K
15.53 mi12:39:502:11:448:2920:54
8:37
#18796
30K
18.64 mi13:06:512:38:458:3127:01
8:42
#18242
20M
20.00 mi13:18:422:50:368:3211:51
8:43
#17963
21M
21.00 mi13:28:012:59:558:349:19
9:19
#17803
35K
21.75 mi13:34:423:06:368:356:41
8:56
#17800
23M
23.00 mi13:46:103:18:048:3711:28
9:09
#17734
24M
24.00 mi13:54:563:26:508:378:46
8:46
#17643
40K
24.85 mi14:02:363:34:308:387:40
8:58
#17578
25.2M
25.20 mi14:05:533:37:478:393:17
9:31
#17527
Finish
26.22 mi14:14:413:46:358:398:48
8:38
#17510
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi18188116791167919226(Top 68%)12150(Top 75%)12150(Top 1901%)
10K6.21 mi3.10 mi19114-92612091-41212091-41220056(Top 71%)12503(Top 78%)12503(Top 1957%)
15K9.32 mi3.11 mi19117-312092-112092-119226(Top 68%)12150(Top 75%)12150(Top 1901%)
20K12.43 mi3.11 mi18922+19512010+8212010+8218423(Top 65%)11787(Top 73%)11787(Top 1845%)
Half13.11 mi0.68 mi18982-6012031-2112031-2120017(Top 70%)12458(Top 77%)12458(Top 1950%)
25K15.53 mi2.42 mi18796+18611948+8311948+8317908(Top 63%)11478(Top 71%)11478(Top 1796%)
30K18.64 mi3.11 mi18242+55411664+28411664+28415980(Top 56%)10489(Top 65%)10489(Top 1641%)
20M20.00 mi1.36 mi17963+27911510+15411510+15415183(Top 53%)10007(Top 62%)10007(Top 1566%)
21M21.00 mi1.00 mi17803+16011427+8311427+8315224(Top 54%)9884(Top 61%)9884(Top 1547%)
35K21.75 mi0.75 mi17800+311416+1111416+1117900(Top 63%)11003(Top 68%)11003(Top 1722%)
23M23.00 mi1.25 mi17734+6611335+8111335+8117131(Top 60%)10566(Top 66%)10566(Top 1654%)
24M24.00 mi1.00 mi17643+9111268+6711268+6716112(Top 57%)10085(Top 63%)10085(Top 1578%)
40K24.85 mi0.85 mi17578+6511210+5811210+5816095(Top 57%)9968(Top 62%)9968(Top 1560%)
25.2M25.20 mi0.35 mi17527+5111171+3911171+3914676(Top 52%)9269(Top 58%)9269(Top 1451%)
Finish26.22 mi1.02 mi17510+1711143+2811143+2817054(Top 60%)10419(Top 65%)10419(Top 1631%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

19226

Males

12150

M65-69

12150

5K→10K

3.1 - 6.2 mi

Top 71%
×5stories
+79ft-138ft

Overall

20056

Males

12503

M65-69

12503

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

19226

Males

12150

M65-69

12150

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

18423

Males

11787

M65-69

11787

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

20017

Males

12458

M65-69

12458

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

17908

Males

11478

M65-69

11478

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

15980

Males

10489

M65-69

10489

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

15183

Males

10007

M65-69

10007

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

15224

Males

9884

M65-69

9884

21M→35K

21.0 - 21.8 mi

Top 63%
×7stories
+17ft-86ft

Overall

17900

Males

11003

M65-69

11003

35K→23M

21.8 - 23.0 mi

Top 60%
×5stories
+23ft-63ft

Overall

17131

Males

10566

M65-69

10566

23M→24M

23.0 - 24.0 mi

Top 57%
×6stories
+12ft-82ft

Overall

16112

Males

10085

M65-69

10085

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16095

Males

9968

M65-69

9968

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

14676

Males

9269

M65-69

9269

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

17054

Males

10419

M65-69

10419

Passing Analysis

Category:
Athletes Passed
2427
Passed By
1749
Net Change
+678
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18188
5K → 10K57983-926#18188#19114
10K → 15K202205-3#19114#19117
15K → 20K29499+195#19117#18922
20K → Half1272-60#18922#18982
Half → 25K25468+186#18982#18796
25K → 30K57622+554#18796#18242
30K → 20M28910+279#18242#17963
20M → 21M19333+160#17963#17803
21M → 35K6966+3#17803#17800
35K → 23M13973+66#17800#17734
23M → 24M11928+91#17734#17643
24M → 40K9934+65#17643#17578
40K → 25.2M587+51#17578#17527
25.2M → Finish6649+17#17527#17510
TOTALS24271749+678
📊

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