Boston Marathon logo
BOSTON MARATHON 2024

Karl Welke

Bib: 8558•M

NC

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 27%
Gender (Male)
#0 / 14578
Top 38%
Masters (Masters Men)
#0 / 9729
Top 27%
Division (M55-59)
#0 / 1529
Top 11%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:37
Rank: #4301
Start → 5K
20:37 | 6:38/mi
10K· 6.21 mi
41:41
Rank: #4627 (-326)
5K → 10K
21:04 | 6:47/mi
15K· 9.32 mi
1:03:04
Rank: #4889 (-262)
10K → 15K
21:23 | 6:53/mi
20K· 12.43 mi
1:24:42
Rank: #4881 (+8)
15K → 20K
21:38 | 6:58/mi
Half· 13.11 mi
1:29:23
Rank: #4877 (+4)
20K → Half
4:41 | 6:52/mi
25K· 15.53 mi
1:46:52
Rank: #4969 (-92)
Half → 25K
17:29 | 7:13/mi
30K· 18.64 mi
2:11:26
Rank: #5303 (-334)
25K → 30K
24:34 | 7:54/mi
20M
2:22:42
Rank: #5442 (-139)
30K → 20M
11:16 | 8:17/mi
21M
2:32:03
Rank: #5617 (-175)
20M → 21M
9:21 | 9:21/mi
35K· 21.75 mi
2:38:18
Rank: #5709 (-92)
21M → 35K
6:15 | 8:21/mi
23M
2:49:29
Rank: #5908 (-199)
35K → 23M
11:11 | 8:56/mi
24M
2:58:34
Rank: #6134 (-226)
23M → 24M
9:05 | 9:05/mi
40K· 24.85 mi
3:06:35
Rank: #6326 (-192)
24M → 40K
8:01 | 9:23/mi
25.2M
3:10:09
Rank: #6423 (-97)
40K → 25.2M
3:34 | 10:21/mi
Finish· 26.22 mi
3:19:36
Rank: #6794 (-371)
25.2M → Finish
9:27 | 9:16/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:23
Pace6:49 /mi
2nd Half
Distance13.11 mi
Time1:50:13
Pace8:24 /mi
📊Positive Split: 23.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:5720:376:3820:37
6:38
-
10K
6.21 mi11:07:0141:416:4221:04
6:47
+0:09
15K
9.32 mi11:28:241:03:046:4621:23
6:53
+0:06
20K
12.43 mi11:50:021:24:426:4921:38
6:58
+0:05
Half
13.11 mi11:54:431:29:236:494:41
6:52
-0:06
25K
15.53 mi12:12:121:46:526:5317:29
7:13
+0:21
30K
18.64 mi12:36:462:11:267:0324:34
7:54
+0:41
20M
20.00 mi12:48:022:22:427:0811:16
8:17
+0:23
21M
21.00 mi12:57:232:32:037:149:21
9:21
+1:04
35K
21.75 mi13:03:382:38:187:176:15
8:21
-1:00
23M
23.00 mi13:14:492:49:297:2211:11
8:56
+0:35
24M
24.00 mi13:23:542:58:347:269:05
9:05
+0:09
40K
24.85 mi13:31:553:06:357:308:01
9:23
+0:18
25.2M
25.20 mi13:35:293:10:097:333:34
10:21
+0:58
Finish
26.22 mi13:44:563:19:367:379:27
9:16
-1:05

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

7:37 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:52

54% of race

Time at Steady Pace

42:05

21% of race

Time at Slower Pace

50:39

25% of race

Average Pace: 7:37 /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 mi10:45:5720:376:3820:37
6:38
#4301
10K
6.21 mi11:07:0141:416:4221:04
6:47
#4627
15K
9.32 mi11:28:241:03:046:4621:23
6:53
#4889
20K
12.43 mi11:50:021:24:426:4921:38
6:58
#4881
Half
13.11 mi11:54:431:29:236:494:41
6:52
#4877
25K
15.53 mi12:12:121:46:526:5317:29
7:13
#4969
30K
18.64 mi12:36:462:11:267:0324:34
7:54
#5303
20M
20.00 mi12:48:022:22:427:0811:16
8:17
#5442
21M
21.00 mi12:57:232:32:037:149:21
9:21
#5617
35K
21.75 mi13:03:382:38:187:176:15
8:21
#5709
23M
23.00 mi13:14:492:49:297:2211:11
8:56
#5908
24M
24.00 mi13:23:542:58:347:269:05
9:05
#6134
40K
24.85 mi13:31:553:06:357:308:01
9:23
#6326
25.2M
25.20 mi13:35:293:10:097:333:34
10:21
#6423
Finish
26.22 mi13:44:563:19:367:379:27
9:16
#6794
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi4301405040505443(Top 21%)4967(Top 34%)4967(Top 325%)
10K6.21 mi3.10 mi4627-3264321-2714321-2715018(Top 20%)4641(Top 32%)4641(Top 304%)
15K9.32 mi3.11 mi4889-2624535-2144535-2145443(Top 21%)4967(Top 34%)4967(Top 325%)
20K12.43 mi3.11 mi4881+84521+144521+145024(Top 20%)4592(Top 31%)4592(Top 300%)
Half13.11 mi0.68 mi4877+44520+14520+14976(Top 19%)4553(Top 31%)4553(Top 298%)
25K15.53 mi2.42 mi4969-924571-514571-515374(Top 21%)4761(Top 33%)4761(Top 311%)
30K18.64 mi3.11 mi5303-3344787-2164787-2167337(Top 29%)5826(Top 40%)5826(Top 381%)
20M20.00 mi1.36 mi5442-1394866-794866-798321(Top 33%)6156(Top 42%)6156(Top 403%)
21M21.00 mi1.00 mi5617-1754962-964962-9610153(Top 40%)6815(Top 47%)6815(Top 446%)
35K21.75 mi0.75 mi5709-925005-435005-439854(Top 39%)6672(Top 46%)6672(Top 436%)
23M23.00 mi1.25 mi5908-1995112-1075112-10710782(Top 42%)6960(Top 48%)6960(Top 455%)
24M24.00 mi1.00 mi6134-2265228-1165228-11612550(Top 49%)7820(Top 54%)7820(Top 511%)
40K24.85 mi0.85 mi6326-1925316-885316-8812560(Top 49%)7703(Top 53%)7703(Top 504%)
25.2M25.20 mi0.35 mi6423-975356-405356-4012169(Top 48%)7440(Top 51%)7440(Top 487%)
Finish26.22 mi1.02 mi6794-3715556-2005556-20015441(Top 60%)9169(Top 63%)9169(Top 600%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

5443

Males

4967

M55-59

4967

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5018

Males

4641

M55-59

4641

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

5443

Males

4967

M55-59

4967

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5024

Males

4592

M55-59

4592

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

4976

Males

4553

M55-59

4553

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5374

Males

4761

M55-59

4761

25K→30K

15.5 - 18.6 mi

Top 29%
×9stories
+181ft-148ft

Overall

7337

Males

5826

M55-59

5826

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

8321

Males

6156

M55-59

6156

20M→21M

20.0 - 21.0 mi

Top 40%
×8stories
+106ft-24ft

Overall

10153

Males

6815

M55-59

6815

21M→35K

21.0 - 21.8 mi

Top 39%
×7stories
+17ft-86ft

Overall

9854

Males

6672

M55-59

6672

35K→23M

21.8 - 23.0 mi

Top 42%
×5stories
+23ft-63ft

Overall

10782

Males

6960

M55-59

6960

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

12550

Males

7820

M55-59

7820

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

12560

Males

7703

M55-59

7703

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12169

Males

7440

M55-59

7440

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

15441

Males

9169

M55-59

9169

Passing Analysis

Category:
Athletes Passed
901
Passed By
3394
Net Change
-2493
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4301
5K → 10K79405-326#4301#4627
10K → 15K66328-262#4627#4889
15K → 20K172164+8#4889#4881
20K → Half3228+4#4881#4877
Half → 25K146238-92#4877#4969
25K → 30K96430-334#4969#5303
30K → 20M57196-139#5303#5442
20M → 21M54229-175#5442#5617
21M → 35K44136-92#5617#5709
35K → 23M60259-199#5709#5908
23M → 24M33259-226#5908#6134
24M → 40K34226-192#6134#6326
40K → 25.2M11108-97#6326#6423
25.2M → Finish17388-371#6423#6794
TOTALS9013394-2493
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing