Boston Marathon logo
BOSTON MARATHON 2025

Tomasz Danielkiewicz

Bib: 5394•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 19%
Gender (Male)
#0 / 16105
Top 30%
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
20:48
Rank: #5399
Start → 5K
20:48 | 6:42/mi
10K· 6.21 mi
41:42
Rank: #5475 (-76)
5K → 10K
20:54 | 6:44/mi
15K· 9.32 mi
1:02:42
Rank: #5517 (-42)
10K → 15K
21:00 | 6:46/mi
20K· 12.43 mi
1:23:52
Rank: #5470 (+47)
15K → 20K
21:10 | 6:49/mi
Half· 13.11 mi
1:28:29
Rank: #5480 (-10)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:45:05
Rank: #5403 (+77)
Half → 25K
16:36 | 6:51/mi
30K· 18.64 mi
2:06:38
Rank: #5100 (+303)
25K → 30K
21:33 | 6:56/mi
20M
2:16:10
Rank: #4991 (+109)
30K → 20M
9:32 | 7:01/mi
21M
2:23:28
Rank: #4872 (+119)
20M → 21M
7:18 | 7:18/mi
35K· 21.75 mi
2:28:37
Rank: #4841 (+31)
21M → 35K
5:09 | 6:53/mi
23M
2:37:37
Rank: #4813 (+28)
35K → 23M
9:00 | 7:11/mi
24M
2:45:19
Rank: #5040 (-227)
23M → 24M
7:42 | 7:42/mi
40K· 24.85 mi
2:52:11
Rank: #5178 (-138)
24M → 40K
6:52 | 8:02/mi
25.2M
2:55:22
Rank: #5249 (-71)
40K → 25.2M
3:11 | 9:14/mi
Finish· 26.22 mi
3:03:18
Rank: #5371 (-122)
25.2M → Finish
7:56 | 7:47/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
Time1:28:29
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:34:49
Pace7:14 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:3320:486:4220:48
6:42
-
10K
6.21 mi10:45:2741:426:4320:54
6:44
+0:02
15K
9.32 mi11:06:271:02:426:4421:00
6:46
+0:02
20K
12.43 mi11:27:371:23:526:4521:10
6:49
+0:03
Half
13.11 mi11:32:141:28:296:454:37
6:46
-0:03
25K
15.53 mi11:48:501:45:056:4616:36
6:51
+0:05
30K
18.64 mi12:10:232:06:386:4821:33
6:56
+0:05
20M
20.00 mi12:19:552:16:106:489:32
7:01
+0:05
21M
21.00 mi12:27:132:23:286:507:18
7:18
+0:17
35K
21.75 mi12:32:222:28:376:505:09
6:53
-0:25
23M
23.00 mi12:41:222:37:376:519:00
7:11
+0:18
24M
24.00 mi12:49:042:45:196:537:42
7:42
+0:31
40K
24.85 mi12:55:562:52:116:566:52
8:02
+0:20
25.2M
25.20 mi12:59:072:55:226:583:11
9:14
+1:12
Finish
26.22 mi13:07:033:03:187:007:56
7:47
-1:27

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

6:42 /mi

Average Pace

7:00 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:30:19

82% of race

Time at Slower Pace

32:59

18% of race

Average Pace: 6:59 /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 mi10:24:3320:486:4220:48
6:42
#5399
10K
6.21 mi10:45:2741:426:4320:54
6:44
#5475
15K
9.32 mi11:06:271:02:426:4421:00
6:46
#5517
20K
12.43 mi11:27:371:23:526:4521:10
6:49
#5470
Half
13.11 mi11:32:141:28:296:454:37
6:46
#5480
25K
15.53 mi11:48:501:45:056:4616:36
6:51
#5403
30K
18.64 mi12:10:232:06:386:4821:33
6:56
#5100
20M
20.00 mi12:19:552:16:106:489:32
7:01
#4991
21M
21.00 mi12:27:132:23:286:507:18
7:18
#4872
35K
21.75 mi12:32:222:28:376:505:09
6:53
#4841
23M
23.00 mi12:41:222:37:376:519:00
7:11
#4813
24M
24.00 mi12:49:042:45:196:537:42
7:42
#5040
40K
24.85 mi12:55:562:52:116:566:52
8:02
#5178
25.2M
25.20 mi12:59:072:55:226:583:11
9:14
#5249
Finish
26.22 mi13:07:033:03:187:007:56
7:47
#5371
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5399501650165686(Top 20%)5190(Top 32%)5190(Top 92%)
10K6.21 mi3.10 mi5475-765062-465062-465596(Top 20%)5145(Top 32%)5145(Top 91%)
15K9.32 mi3.11 mi5517-425098-365098-365686(Top 20%)5190(Top 32%)5190(Top 92%)
20K12.43 mi3.11 mi5470+475047+515047+515425(Top 19%)4972(Top 31%)4972(Top 88%)
Half13.11 mi0.68 mi5480-105053-65053-65844(Top 21%)5331(Top 33%)5331(Top 94%)
25K15.53 mi2.42 mi5403+774975+784975+785248(Top 18%)4810(Top 30%)4810(Top 85%)
30K18.64 mi3.11 mi5100+3034695+2804695+2804322(Top 15%)3965(Top 25%)3965(Top 70%)
20M20.00 mi1.36 mi4991+1094598+974598+974213(Top 15%)3852(Top 24%)3852(Top 68%)
21M21.00 mi1.00 mi4872+1194494+1044494+1043645(Top 13%)3334(Top 21%)3334(Top 59%)
35K21.75 mi0.75 mi4841+314462+324462+324643(Top 16%)4121(Top 26%)4121(Top 73%)
23M23.00 mi1.25 mi4813+284425+374425+374806(Top 17%)4182(Top 26%)4182(Top 74%)
24M24.00 mi1.00 mi5040-2274607-1824607-1829089(Top 32%)6691(Top 42%)6691(Top 119%)
40K24.85 mi0.85 mi5178-1384709-1024709-10210379(Top 37%)7225(Top 45%)7225(Top 128%)
25.2M25.20 mi0.35 mi5249-714765-564765-5612979(Top 46%)8424(Top 52%)8424(Top 149%)
Finish26.22 mi1.02 mi5371-1224845-804845-8011285(Top 40%)7644(Top 47%)7644(Top 135%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5686

Males

5190

M18-39

5190

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5596

Males

5145

M18-39

5145

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5686

Males

5190

M18-39

5190

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5425

Males

4972

M18-39

4972

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5844

Males

5331

M18-39

5331

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

5248

Males

4810

M18-39

4810

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4322

Males

3965

M18-39

3965

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4213

Males

3852

M18-39

3852

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3645

Males

3334

M18-39

3334

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4643

Males

4121

M18-39

4121

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4806

Males

4182

M18-39

4182

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

9089

Males

6691

M18-39

6691

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10379

Males

7225

M18-39

7225

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12979

Males

8424

M18-39

8424

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

11285

Males

7644

M18-39

7644

Passing Analysis

Category:
Athletes Passed
1390
Passed By
1362
Net Change
+28
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5399
5K → 10K152228-76#5399#5475
10K → 15K102144-42#5475#5517
15K → 20K14497+47#5517#5470
20K → Half2636-10#5470#5480
Half → 25K14265+77#5480#5403
25K → 30K33330+303#5403#5100
30K → 20M13223+109#5100#4991
20M → 21M13516+119#4991#4872
21M → 35K6534+31#4872#4841
35K → 23M9567+28#4841#4813
23M → 24M18245-227#4813#5040
24M → 40K27165-138#5040#5178
40K → 25.2M475-71#5178#5249
25.2M → Finish15137-122#5249#5371
TOTALS13901362+28
📊

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