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BOSTON MARATHON 2025

Marcin Gierach

Bib: 28887•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
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
8:25/mi
26:08
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
52:32
↑ 79↓ 1380.4%
15K· 9.32 mi
8:31/mi
1:19:00
↑ 67↓ 78
20K· 12.43 mi
9:17/mi
1:47:51
↑ 106↓ 860.1%
Half· 13.11 mi
9:10/mi
1:54:06
↑ 19↓ 370.5%
25K· 15.53 mi
10:54/mi
2:20:31
↑ 66↓ 880.2%
30K· 18.64 mi
11:50/mi
2:57:16
↑ 181↓ 1480.2%
20M
10:34/mi
3:11:38
↑ 64↓ 500.2%
21M
13:21/mi
3:24:59
↑ 106↓ 241.6%
35K· 21.75 mi
10:31/mi
3:32:51
↑ 17↓ 861.7%
23M
11:50/mi
3:47:40
↑ 23↓ 630.6%
24M
11:08/mi
3:58:48
↓ 821.3%
40K· 24.85 mi
11:23/mi
4:08:32
↓ 200.3%
25.2M
14:13/mi
4:13:26
↑ 13↓ 160.2%
Finish· 26.22 mi
9:54/mi
4:23:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:06
Pace8:42 /mi
2nd Half
Distance13.11 mi
Time2:29:25
Pace11:24 /mi
📊Positive Split: 31.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:5226:088:2526:08
8:25
-
10K
6.21 mi12:10:1652:328:2726:24
8:30
+0:05
15K
9.32 mi12:36:441:19:008:2926:28
8:31
+0:01
20K
12.43 mi13:05:351:47:518:4128:51
9:17
+0:46
Half
13.11 mi13:11:501:54:068:426:15
9:10
-0:07
25K
15.53 mi13:38:152:20:319:0326:25
10:54
+1:44
30K
18.64 mi14:15:002:57:169:3136:45
11:50
+0:56
20M
20.00 mi14:29:223:11:389:3514:22
10:34
-1:16
21M
21.00 mi14:42:433:24:599:4613:21
13:21
+2:47
35K
21.75 mi14:50:353:32:519:477:52
10:31
-2:50
23M
23.00 mi15:05:243:47:409:5414:49
11:50
+1:19
24M
24.00 mi15:16:323:58:489:5711:08
11:08
-0:42
40K
24.85 mi15:26:164:08:3210:009:44
11:23
+0:15
25.2M
25.20 mi15:31:104:13:2610:034:54
14:13
+2:50
Finish
26.22 mi15:41:154:23:3110:0310:05
9:54
-4:19

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

8:25 /mi

Average Pace

10:03 /mi

Slowest Pace

14:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:06

43% of race

Time at Steady Pace

1:19:36

30% of race

Time at Slower Pace

1:09:49

26% of race

Average Pace: 10:03 /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 mi11:43:5226:088:2526:08
8:25
#19374
10K
6.21 mi12:10:1652:328:2726:24
8:30
#19555
15K
9.32 mi12:36:441:19:008:2926:28
8:31
#19514
20K
12.43 mi13:05:351:47:518:4128:51
9:17
#20286
Half
13.11 mi13:11:501:54:068:426:15
9:10
#20429
25K
15.53 mi13:38:152:20:319:0326:25
10:54
#21756
30K
18.64 mi14:15:002:57:169:3136:45
11:50
#22830
20M
20.00 mi14:29:223:11:389:3514:22
10:34
#22809
21M
21.00 mi14:42:433:24:599:4613:21
13:21
#23044
35K
21.75 mi14:50:353:32:519:477:52
10:31
#23043
23M
23.00 mi15:05:243:47:409:5414:49
11:50
#23197
24M
24.00 mi15:16:323:58:489:5711:08
11:08
#23230
40K
24.85 mi15:26:164:08:3210:009:44
11:23
#23262
25.2M
25.20 mi15:31:104:13:2610:034:54
14:13
#23335
Finish
26.22 mi15:41:154:23:3110:0310:05
9:54
#23332
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi19374121931219319441(Top 68%)12252(Top 76%)12252(Top 513%)
10K6.21 mi3.10 mi19555-18112287-9412287-9419780(Top 70%)12381(Top 77%)12381(Top 519%)
15K9.32 mi3.11 mi19514+4112272+1512272+1519441(Top 68%)12252(Top 76%)12252(Top 513%)
20K12.43 mi3.11 mi20286-77212591-31912591-31922228(Top 78%)13459(Top 84%)13459(Top 564%)
Half13.11 mi0.68 mi20429-14312650-5912650-5922451(Top 79%)13542(Top 84%)13542(Top 568%)
25K15.53 mi2.42 mi21756-132713223-57313223-57325048(Top 88%)14662(Top 91%)14662(Top 615%)
30K18.64 mi3.11 mi22830-107413685-46213685-46225357(Top 89%)14702(Top 91%)14702(Top 616%)
20M20.00 mi1.36 mi22809+2113641+4413641+4422617(Top 80%)13348(Top 83%)13348(Top 559%)
21M21.00 mi1.00 mi23044-23513732-9113732-9125504(Top 90%)14629(Top 91%)14629(Top 613%)
35K21.75 mi0.75 mi23043+113722+1013722+1023200(Top 82%)13486(Top 84%)13486(Top 565%)
23M23.00 mi1.25 mi23197-15413762-4013762-4024830(Top 87%)14258(Top 89%)14258(Top 598%)
24M24.00 mi1.00 mi23230-3313758+413758+424254(Top 85%)13948(Top 87%)13948(Top 585%)
40K24.85 mi0.85 mi23262-3213762-413762-423927(Top 84%)13736(Top 85%)13736(Top 576%)
25.2M25.20 mi0.35 mi23335-7313793-3113793-3126487(Top 93%)14987(Top 93%)14987(Top 628%)
Finish26.22 mi1.02 mi23332+313778+1513778+1522603(Top 80%)13084(Top 81%)13084(Top 548%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

19441

Males

12252

M45-49

12252

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19780

Males

12381

M45-49

12381

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

19441

Males

12252

M45-49

12252

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22228

Males

13459

M45-49

13459

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

22451

Males

13542

M45-49

13542

Half→25K

13.1 - 15.5 mi

Top 88%
×4story building
+66ft-88ft

Overall

25048

Males

14662

M45-49

14662

25K→30K

15.5 - 18.6 mi

Top 89%
×9story building
+181ft-148ft

Overall

25357

Males

14702

M45-49

14702

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

22617

Males

13348

M45-49

13348

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

25504

Males

14629

M45-49

14629

21M→35K

21.0 - 21.8 mi

Top 82%
×7story building
+17ft-86ft

Overall

23200

Males

13486

M45-49

13486

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

24830

Males

14258

M45-49

14258

23M→24M

23.0 - 24.0 mi

Top 85%
×6story building
+12ft-82ft

Overall

24254

Males

13948

M45-49

13948

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23927

Males

13736

M45-49

13736

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

26487

Males

14987

M45-49

14987

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

22603

Males

13084

M45-49

13084

Passing Analysis

Category:
Athletes Passed
780
Passed By
4738
Net Change
-3958
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19374
5K → 10K173354-181#19374#19555
10K → 15K211170+41#19555#19514
15K → 20K48820-772#19514#20286
20K → Half7150-143#20286#20429
Half → 25K81335-1327#20429#21756
25K → 30K291103-1074#21756#22830
30K → 20M8968+21#22830#22809
20M → 21M14249-235#22809#23044
21M → 35K4241+1#23044#23043
35K → 23M34188-154#23043#23197
23M → 24M3568-33#23197#23230
24M → 40K4274-32#23230#23262
40K → 25.2M376-73#23262#23335
25.2M → Finish4542+3#23335#23332
TOTALS7804738-3958
📊

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