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BOSTON MARATHON 2025

Guenter Wilhelm Koczessa

Bib: 25275•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M70-74)
#0 / 228
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
9:28/mi
29:26
↑ 97↓ 3451.5%
10K· 6.21 mi
10:00/mi
1:00:29
↑ 79↓ 1380.4%
15K· 9.32 mi
10:10/mi
1:32:03
↑ 67↓ 78
20K· 12.43 mi
10:19/mi
2:04:07
↑ 106↓ 860.1%
Half· 13.11 mi
10:23/mi
2:11:12
↑ 19↓ 370.5%
25K· 15.53 mi
10:28/mi
2:36:35
↑ 66↓ 880.2%
30K· 18.64 mi
11:04/mi
3:10:59
↑ 181↓ 1480.2%
20M
11:26/mi
3:26:31
↑ 64↓ 500.2%
21M
13:21/mi
3:39:52
↑ 106↓ 241.6%
35K· 21.75 mi
11:00/mi
3:48:06
↑ 17↓ 861.7%
23M
11:54/mi
4:03:00
↑ 23↓ 630.6%
24M
10:54/mi
4:13:54
↓ 821.3%
40K· 24.85 mi
12:18/mi
4:24:25
↓ 200.3%
25.2M
12:46/mi
4:28:49
↑ 13↓ 160.2%
Finish· 26.22 mi
10:36/mi
4:39:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:12
Pace10:00 /mi
2nd Half
Distance13.11 mi
Time2:28:25
Pace11:19 /mi
📊Positive Split: 13.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:29:0329:269:2829:26
9:28
-
10K
6.21 mi12:00:061:00:299:4431:03
10:00
+0:32
15K
9.32 mi12:31:401:32:039:5331:34
10:10
+0:10
20K
12.43 mi13:03:442:04:079:5932:04
10:19
+0:09
Half
13.11 mi13:10:492:11:1210:007:05
10:23
+0:04
25K
15.53 mi13:36:122:36:3510:0525:23
10:28
+0:05
30K
18.64 mi14:10:363:10:5910:1534:24
11:04
+0:36
20M
20.00 mi14:26:083:26:3110:2015:32
11:26
+0:22
21M
21.00 mi14:39:293:39:5210:2813:21
13:21
+1:55
35K
21.75 mi14:47:433:48:0610:298:14
11:00
-2:21
23M
23.00 mi15:02:374:03:0010:3414:54
11:54
+0:54
24M
24.00 mi15:13:314:13:5410:3510:54
10:54
-1:00
40K
24.85 mi15:24:024:24:2510:3810:31
12:18
+1:24
25.2M
25.20 mi15:28:264:28:4910:404:24
12:46
+0:28
Finish
26.22 mi15:39:144:39:3710:4010:48
10:36
-2:10

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

9:28 /mi

Average Pace

10:40 /mi

Slowest Pace

13:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:07

44% of race

Time at Steady Pace

1:36:48

35% of race

Time at Slower Pace

58:42

21% of race

Average Pace: 10:40 /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 mi11:29:0329:269:2829:26
9:28
#24174
10K
6.21 mi12:00:061:00:299:4431:03
10:00
#24825
15K
9.32 mi12:31:401:32:039:5331:34
10:10
#24989
20K
12.43 mi13:03:442:04:079:5932:04
10:19
#24991
Half
13.11 mi13:10:492:11:1210:007:05
10:23
#25023
25K
15.53 mi13:36:122:36:3510:0525:23
10:28
#24899
30K
18.64 mi14:10:363:10:5910:1534:24
11:04
#24750
20M
20.00 mi14:26:083:26:3110:2015:32
11:26
#24737
21M
21.00 mi14:39:293:39:5210:2813:21
13:21
#24795
35K
21.75 mi14:47:433:48:0610:298:14
11:00
#24789
23M
23.00 mi15:02:374:03:0010:3414:54
11:54
#24822
24M
24.00 mi15:13:314:13:5410:3510:54
10:54
#24778
40K
24.85 mi15:24:024:24:2510:3810:31
12:18
#24811
25.2M
25.20 mi15:28:264:28:4910:404:24
12:46
#24817
Finish
26.22 mi15:39:144:39:3710:4010:48
10:36
#24819
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM70-74Seg. OverallSeg. MalesSeg. M70-74
5K3.11 mi3.11 mi24174143291432925332(Top 89%)14847(Top 92%)14847(Top 6512%)
10K6.21 mi3.10 mi24825-65114622-29314622-29325302(Top 89%)14835(Top 92%)14835(Top 6507%)
15K9.32 mi3.11 mi24989-16414711-8914711-8925332(Top 89%)14847(Top 92%)14847(Top 6512%)
20K12.43 mi3.11 mi24991-214701+1014701+1024869(Top 88%)14615(Top 91%)14615(Top 6410%)
Half13.11 mi0.68 mi25023-3214708-714708-725592(Top 90%)14930(Top 93%)14930(Top 6548%)
25K15.53 mi2.42 mi24899+12414636+7214636+7224317(Top 86%)14335(Top 89%)14335(Top 6287%)
30K18.64 mi3.11 mi24750+14914542+9414542+9424126(Top 85%)14129(Top 88%)14129(Top 6197%)
20M20.00 mi1.36 mi24737+1314526+1614526+1624425(Top 86%)14182(Top 88%)14182(Top 6220%)
21M21.00 mi1.00 mi24795-5814545-1914545-1925506(Top 90%)14631(Top 91%)14631(Top 6417%)
35K21.75 mi0.75 mi24789+614529+1614529+1624209(Top 85%)13977(Top 87%)13977(Top 6130%)
23M23.00 mi1.25 mi24822-3314528+114528+124967(Top 88%)14320(Top 89%)14320(Top 6281%)
24M24.00 mi1.00 mi24778+4414491+3714491+3723773(Top 84%)13707(Top 85%)13707(Top 6012%)
40K24.85 mi0.85 mi24811-3314495-414495-425378(Top 89%)14455(Top 90%)14455(Top 6340%)
25.2M25.20 mi0.35 mi24817-614493+214493+224671(Top 87%)14106(Top 88%)14106(Top 6187%)
Finish26.22 mi1.02 mi24819-214482+1114482+1124499(Top 86%)14030(Top 87%)14030(Top 6154%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

25332

Males

14847

M70-74

14847

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

25302

Males

14835

M70-74

14835

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

25332

Males

14847

M70-74

14847

15K→20K

9.3 - 12.4 mi

Top 88%
×5story building
+106ft-86ft

Overall

24869

Males

14615

M70-74

14615

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

25592

Males

14930

M70-74

14930

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

24317

Males

14335

M70-74

14335

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

24126

Males

14129

M70-74

14129

30K→20M

18.6 - 20.0 mi

Top 86%
×5story building
+64ft-50ft

Overall

24425

Males

14182

M70-74

14182

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

25506

Males

14631

M70-74

14631

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

24209

Males

13977

M70-74

13977

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

24967

Males

14320

M70-74

14320

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

23773

Males

13707

M70-74

13707

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

25378

Males

14455

M70-74

14455

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24671

Males

14106

M70-74

14106

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2story building
+22ft-21ft

Overall

24499

Males

14030

M70-74

14030

Passing Analysis

Category:
Athletes Passed
980
Passed By
1625
Net Change
-645
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24174
5K → 10K55706-651#24174#24825
10K → 15K78242-164#24825#24989
15K → 20K142144-2#24989#24991
20K → Half1951-32#24991#25023
Half → 25K16844+124#25023#24899
25K → 30K20455+149#24899#24750
30K → 20M7461+13#24750#24737
20M → 21M2886-58#24737#24795
21M → 35K3832+6#24795#24789
35K → 23M3770-33#24789#24822
23M → 24M6218+44#24822#24778
24M → 40K2154-33#24778#24811
40K → 25.2M1723-6#24811#24817
25.2M → Finish3739-2#24817#24819
TOTALS9801625-645
📊

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