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BOSTON MARATHON 2025

Karl Welke

Bib: 9673•M

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 18%
Gender (Male)
#0 / 16105
Top 29%
Masters (Masters Men)
#0 / 10463
Top 15%
Division (M55-59)
#0 / 1648
Top 4%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:38
Rank: #4942
Start → 5K
20:38 | 6:38/mi
10K· 6.21 mi
41:35
Rank: #5285 (-343)
5K → 10K
20:57 | 6:45/mi
15K· 9.32 mi
1:02:34
Rank: #5373 (-88)
10K → 15K
20:59 | 6:45/mi
20K· 12.43 mi
1:23:41
Rank: #5307 (+66)
15K → 20K
21:07 | 6:48/mi
Half· 13.11 mi
1:28:16
Rank: #5304 (+3)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:44:44
Rank: #5184 (+120)
Half → 25K
16:28 | 6:47/mi
30K· 18.64 mi
2:06:36
Rank: #5080 (+104)
25K → 30K
21:52 | 7:02/mi
20M
2:16:11
Rank: #4997 (+83)
30K → 20M
9:35 | 7:03/mi
21M
2:23:42
Rank: #4963 (+34)
20M → 21M
7:31 | 7:31/mi
35K· 21.75 mi
2:28:57
Rank: #4961 (+2)
21M → 35K
5:15 | 7:01/mi
23M
2:37:52
Rank: #4906 (+55)
35K → 23M
8:55 | 7:07/mi
24M
2:45:00
Rank: #4945 (-39)
23M → 24M
7:08 | 7:08/mi
40K· 24.85 mi
2:51:23
Rank: #4987 (-42)
24M → 40K
6:23 | 7:28/mi
25.2M
2:54:19
Rank: #5027 (-40)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:02:11
Rank: #5154 (-127)
25.2M → Finish
7:52 | 7:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:16
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:33:55
Pace7:10 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:4420:386:3820:38
6:38
-
10K
6.21 mi11:07:4141:356:4220:57
6:45
+0:07
15K
9.32 mi11:28:401:02:346:4320:59
6:45
0:00
20K
12.43 mi11:49:471:23:416:4421:07
6:48
+0:03
Half
13.11 mi11:54:221:28:166:444:35
6:43
-0:05
25K
15.53 mi12:10:501:44:446:4516:28
6:47
+0:04
30K
18.64 mi12:32:422:06:366:4721:52
7:02
+0:15
20M
20.00 mi12:42:172:16:116:499:35
7:03
+0:01
21M
21.00 mi12:49:482:23:426:517:31
7:31
+0:28
35K
21.75 mi12:55:032:28:576:515:15
7:01
-0:30
23M
23.00 mi13:03:582:37:526:528:55
7:07
+0:06
24M
24.00 mi13:11:062:45:006:537:08
7:08
+0:01
40K
24.85 mi13:17:292:51:236:546:23
7:28
+0:20
25.2M
25.20 mi13:20:252:54:196:552:56
8:30
+1:02
Finish
26.22 mi13:28:173:02:116:577:52
7:43
-0:47

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

6:38 /mi

Average Pace

6:57 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:37

46% of race

Time at Steady Pace

1:13:52

41% of race

Time at Slower Pace

24:42

14% of race

Average Pace: 6:57 /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 mi10:46:4420:386:3820:38
6:38
#4942
10K
6.21 mi11:07:4141:356:4220:57
6:45
#5285
15K
9.32 mi11:28:401:02:346:4320:59
6:45
#5373
20K
12.43 mi11:49:471:23:416:4421:07
6:48
#5307
Half
13.11 mi11:54:221:28:166:444:35
6:43
#5304
25K
15.53 mi12:10:501:44:446:4516:28
6:47
#5184
30K
18.64 mi12:32:422:06:366:4721:52
7:02
#5080
20M
20.00 mi12:42:172:16:116:499:35
7:03
#4997
21M
21.00 mi12:49:482:23:426:517:31
7:31
#4963
35K
21.75 mi12:55:032:28:576:515:15
7:01
#4961
23M
23.00 mi13:03:582:37:526:528:55
7:07
#4906
24M
24.00 mi13:11:062:45:006:537:08
7:08
#4945
40K
24.85 mi13:17:292:51:236:546:23
7:28
#4987
25.2M
25.20 mi13:20:252:54:196:552:56
8:30
#5027
Finish
26.22 mi13:28:173:02:116:577:52
7:43
#5154
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi4942462646265623(Top 20%)5140(Top 32%)5140(Top 312%)
10K6.21 mi3.10 mi5285-3434904-2784904-2785746(Top 20%)5262(Top 33%)5262(Top 319%)
15K9.32 mi3.11 mi5373-884975-714975-715623(Top 20%)5140(Top 32%)5140(Top 312%)
20K12.43 mi3.11 mi5307+664912+634912+635256(Top 19%)4831(Top 30%)4831(Top 293%)
Half13.11 mi0.68 mi5304+34909+34909+35394(Top 19%)4949(Top 31%)4949(Top 300%)
25K15.53 mi2.42 mi5184+1204801+1084801+1084802(Top 17%)4417(Top 27%)4417(Top 268%)
30K18.64 mi3.11 mi5080+1044678+1234678+1234926(Top 17%)4474(Top 28%)4474(Top 271%)
20M20.00 mi1.36 mi4997+834603+754603+754407(Top 16%)4013(Top 25%)4013(Top 244%)
21M21.00 mi1.00 mi4963+344571+324571+324677(Top 16%)4134(Top 26%)4134(Top 251%)
35K21.75 mi0.75 mi4961+24560+114560+115418(Top 19%)4658(Top 29%)4658(Top 283%)
23M23.00 mi1.25 mi4906+554506+544506+544443(Top 16%)3910(Top 24%)3910(Top 237%)
24M24.00 mi1.00 mi4945-394527-214527-215378(Top 19%)4512(Top 28%)4512(Top 274%)
40K24.85 mi0.85 mi4987-424552-254552-256563(Top 23%)5170(Top 32%)5170(Top 314%)
25.2M25.20 mi0.35 mi5027-404582-304582-308717(Top 31%)6276(Top 39%)6276(Top 381%)
Finish26.22 mi1.02 mi5154-1274676-944676-9410791(Top 38%)7383(Top 46%)7383(Top 448%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5623

Males

5140

M55-59

5140

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5746

Males

5262

M55-59

5262

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5623

Males

5140

M55-59

5140

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5256

Males

4831

M55-59

4831

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5394

Males

4949

M55-59

4949

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4802

Males

4417

M55-59

4417

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4926

Males

4474

M55-59

4474

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4407

Males

4013

M55-59

4013

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4677

Males

4134

M55-59

4134

21M→35K

21.0 - 21.8 mi

Top 19%
×7stories
+17ft-86ft

Overall

5418

Males

4658

M55-59

4658

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4443

Males

3910

M55-59

3910

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5378

Males

4512

M55-59

4512

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6563

Males

5170

M55-59

5170

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8717

Males

6276

M55-59

6276

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10791

Males

7383

M55-59

7383

Passing Analysis

Category:
Athletes Passed
1199
Passed By
1411
Net Change
-212
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4942
5K → 10K73416-343#4942#5285
10K → 15K93181-88#5285#5373
15K → 20K15488+66#5373#5307
20K → Half2825+3#5307#5304
Half → 25K17656+120#5304#5184
25K → 30K206102+104#5184#5080
30K → 20M11229+83#5080#4997
20M → 21M8248+34#4997#4963
21M → 35K5048+2#4963#4961
35K → 23M11156+55#4961#4906
23M → 24M4786-39#4906#4945
24M → 40K3981-42#4945#4987
40K → 25.2M1454-40#4987#5027
25.2M → Finish14141-127#5027#5154
TOTALS11991411-212
📊

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