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BOSTON MARATHON 2025

Alexander Kirchgaesser

Bib: 29258•M

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 46%
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:29
Rank: #20007
Start → 5K
8:31/mi
26:29 split
10K· 6.21 mi
51:31
Rank: #18542 (+1465)
5K → 10K
8:03/mi
25:02 split
15K· 9.32 mi
1:16:06
Rank: #17518 (+1024)
10K → 15K
7:55/mi
24:35 split
20K· 12.43 mi
1:40:47
Rank: #16745 (+773)
15K → 20K
7:57/mi
24:41 split
Half· 13.11 mi
1:46:13
Rank: #16684 (+61)
20K → Half
7:58/mi
5:26 split
25K· 15.53 mi
2:05:39
Rank: #16232 (+452)
Half → 25K
8:01/mi
19:26 split
30K· 18.64 mi
2:31:10
Rank: #15582 (+650)
25K → 30K
8:13/mi
25:31 split
20M
2:42:20
Rank: #15265 (+317)
30K → 20M
8:13/mi
11:10 split
21M
2:50:29
Rank: #14797 (+468)
20M → 21M
8:09/mi
8:09 split
35K· 21.75 mi
2:56:06
Rank: #14546 (+251)
21M → 35K
7:30/mi
5:37 split
23M
3:05:46
Rank: #14155 (+391)
35K → 23M
7:43/mi
9:40 split
24M
3:13:07
Rank: #13770 (+385)
23M → 24M
7:21/mi
7:21 split
40K· 24.85 mi
3:19:36
Rank: #13486 (+284)
24M → 40K
7:35/mi
6:29 split
25.2M
3:22:33
Rank: #13402 (+84)
40K → 25.2M
8:33/mi
2:57 split
Finish· 26.22 mi
3:29:38
Rank: #13116 (+286)
25.2M → Finish
6:57/mi
7:05 split

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:46:13
Pace8:06 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:43:25
Pace7:53 /mi
📊Negative Split: 2.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:4326:298:3126:29
8:31
-
10K
6.21 mi12:08:4551:318:1725:02
8:03
-0:28
15K
9.32 mi12:33:201:16:068:1024:35
7:55
-0:08
20K
12.43 mi12:58:011:40:478:0724:41
7:57
+0:02
Half
13.11 mi13:03:271:46:138:065:26
7:58
+0:01
25K
15.53 mi13:22:532:05:398:0519:26
8:01
+0:03
30K
18.64 mi13:48:242:31:108:0725:31
8:13
+0:12
20M
20.00 mi13:59:342:42:208:0711:10
8:13
0:00
21M
21.00 mi14:07:432:50:298:078:09
8:09
-0:04
35K
21.75 mi14:13:202:56:068:065:37
7:30
-0:39
23M
23.00 mi14:23:003:05:468:059:40
7:43
+0:13
24M
24.00 mi14:30:213:13:078:037:21
7:21
-0:22
40K
24.85 mi14:36:503:19:368:026:29
7:35
+0:14
25.2M
25.20 mi14:39:473:22:338:022:57
8:33
+0:58
Finish
26.22 mi14:46:523:29:388:007:05
6:57
-1:36

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

6:57 /mi

Average Pace

8:00 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

36:12

17% of race

Time at Steady Pace

1:47:19

51% of race

Time at Slower Pace

1:06:07

32% of race

Average Pace: 8:00 /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 mi11:43:4326:298:3126:29
8:31
#20007
10K
6.21 mi12:08:4551:318:1725:02
8:03
#18542
15K
9.32 mi12:33:201:16:068:1024:35
7:55
#17518
20K
12.43 mi12:58:011:40:478:0724:41
7:57
#16745
Half
13.11 mi13:03:271:46:138:065:26
7:58
#16684
25K
15.53 mi13:22:532:05:398:0519:26
8:01
#16232
30K
18.64 mi13:48:242:31:108:0725:31
8:13
#15582
20M
20.00 mi13:59:342:42:208:0711:10
8:13
#15265
21M
21.00 mi14:07:432:50:298:078:09
8:09
#14797
35K
21.75 mi14:13:202:56:068:065:37
7:30
#14546
23M
23.00 mi14:23:003:05:468:059:40
7:43
#14155
24M
24.00 mi14:30:213:13:078:037:21
7:21
#13770
40K
24.85 mi14:36:503:19:368:026:29
7:35
#13486
25.2M
25.20 mi14:39:473:22:338:022:57
8:33
#13402
Finish
26.22 mi14:46:523:29:388:007:05
6:57
#13116
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20007124391243915325(Top 54%)10511(Top 65%)10511(Top 186%)
10K6.21 mi3.10 mi18542+146511848+59111848+59116880(Top 59%)11193(Top 70%)11193(Top 198%)
15K9.32 mi3.11 mi17518+102411442+40611442+40615325(Top 54%)10511(Top 65%)10511(Top 186%)
20K12.43 mi3.11 mi16745+77311110+33211110+33214473(Top 51%)10074(Top 63%)10074(Top 179%)
Half13.11 mi0.68 mi16684+6111084+2611084+2615540(Top 55%)10568(Top 66%)10568(Top 187%)
25K15.53 mi2.42 mi16232+45210885+19910885+19913989(Top 49%)9743(Top 60%)9743(Top 173%)
30K18.64 mi3.11 mi15582+65010547+33810547+33812919(Top 45%)9096(Top 56%)9096(Top 161%)
20M20.00 mi1.36 mi15265+31710375+17210375+17211899(Top 42%)8482(Top 53%)8482(Top 150%)
21M21.00 mi1.00 mi14797+46810146+22910146+2298267(Top 29%)6418(Top 40%)6418(Top 114%)
35K21.75 mi0.75 mi14546+25110023+12310023+1238687(Top 31%)6696(Top 42%)6696(Top 119%)
23M23.00 mi1.25 mi14155+3919798+2259798+2258026(Top 28%)6182(Top 38%)6182(Top 110%)
24M24.00 mi1.00 mi13770+3859599+1999599+1996726(Top 24%)5373(Top 33%)5373(Top 95%)
40K24.85 mi0.85 mi13486+2849460+1399460+1397319(Top 26%)5625(Top 35%)5625(Top 100%)
25.2M25.20 mi0.35 mi13402+849407+539407+539101(Top 32%)6520(Top 40%)6520(Top 116%)
Finish26.22 mi1.02 mi13116+2869255+1529255+1525421(Top 19%)4389(Top 27%)4389(Top 78%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15325

Males

10511

M18-39

10511

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16880

Males

11193

M18-39

11193

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15325

Males

10511

M18-39

10511

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

14473

Males

10074

M18-39

10074

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

15540

Males

10568

M18-39

10568

Half→25K

13.1 - 15.5 mi

Top 49%
×4story building
+66ft-88ft

Overall

13989

Males

9743

M18-39

9743

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12919

Males

9096

M18-39

9096

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11899

Males

8482

M18-39

8482

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

8267

Males

6418

M18-39

6418

21M→35K

21.0 - 21.8 mi

Top 31%
×7story building
+17ft-86ft

Overall

8687

Males

6696

M18-39

6696

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

8026

Males

6182

M18-39

6182

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6726

Males

5373

M18-39

5373

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7319

Males

5625

M18-39

5625

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

9101

Males

6520

M18-39

6520

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2story building
+22ft-21ft

Overall

5421

Males

4389

M18-39

4389

Passing Analysis

Category:
Athletes Passed
6963
Passed By
72
Net Change
+6891
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20007
5K → 10K148419+1465#20007#18542
10K → 15K10295+1024#18542#17518
15K → 20K7763+773#17518#16745
20K → Half7211+61#16745#16684
Half → 25K4586+452#16684#16232
25K → 30K66212+650#16232#15582
30K → 20M3214+317#15582#15265
20M → 21M4691+468#15265#14797
21M → 35K2532+251#14797#14546
35K → 23M3921+391#14546#14155
23M → 24M3850+385#14155#13770
24M → 40K2851+284#13770#13486
40K → 25.2M906+84#13486#13402
25.2M → Finish2871+286#13402#13116
TOTALS696372+6891
📊

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