Boston Marathon logo
BOSTON MARATHON 2025

Henry Tadeusiak

Bib: 4019•M

TX

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 11%
Gender (Male)
#0 / 16105
Top 18%
Division (M18-39)
#0 / 5642
Top 40%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:30
Rank: #2283
Start → 5K
19:30 | 6:17/mi
10K· 6.21 mi
38:33
Rank: #1894 (+389)
5K → 10K
19:03 | 6:08/mi
15K· 9.32 mi
57:43
Rank: #1818 (+76)
10K → 15K
19:10 | 6:10/mi
20K· 12.43 mi
1:17:06
Rank: #1774 (+44)
15K → 20K
19:23 | 6:14/mi
Half· 13.11 mi
1:21:20
Rank: #1786 (-12)
20K → Half
4:14 | 6:12/mi
25K· 15.53 mi
1:36:43
Rank: #1811 (-25)
Half → 25K
15:23 | 6:21/mi
30K· 18.64 mi
1:57:24
Rank: #1933 (-122)
25K → 30K
20:41 | 6:39/mi
20M
2:06:40
Rank: #1990 (-57)
30K → 20M
9:16 | 6:49/mi
21M
2:14:06
Rank: #2084 (-94)
20M → 21M
7:26 | 7:26/mi
35K· 21.75 mi
2:19:29
Rank: #2194 (-110)
21M → 35K
5:23 | 7:12/mi
23M
2:29:04
Rank: #2411 (-217)
35K → 23M
9:35 | 7:39/mi
24M
2:36:26
Rank: #2564 (-153)
23M → 24M
7:22 | 7:22/mi
40K· 24.85 mi
2:43:08
Rank: #2715 (-151)
24M → 40K
6:42 | 7:50/mi
25.2M
2:46:01
Rank: #2777 (-62)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
2:54:05
Rank: #3020 (-243)
25.2M → Finish
8:04 | 7:55/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
Time1:21:20
Pace6:12 /mi
2nd Half
Distance13.11 mi
Time1:32:45
Pace7:05 /mi
📊Positive Split: 14.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:4619:306:1719:30
6:17
-
10K
6.21 mi10:40:4938:336:1219:03
6:08
-0:09
15K
9.32 mi10:59:5957:436:1219:10
6:10
+0:02
20K
12.43 mi11:19:221:17:066:1219:23
6:14
+0:04
Half
13.11 mi11:23:361:21:206:124:14
6:12
-0:02
25K
15.53 mi11:38:591:36:436:1415:23
6:21
+0:09
30K
18.64 mi11:59:401:57:246:1820:41
6:39
+0:18
20M
20.00 mi12:08:562:06:406:209:16
6:49
+0:10
21M
21.00 mi12:16:222:14:066:237:26
7:26
+0:37
35K
21.75 mi12:21:452:19:296:255:23
7:12
-0:14
23M
23.00 mi12:31:202:29:046:299:35
7:39
+0:27
24M
24.00 mi12:38:422:36:266:317:22
7:22
-0:17
40K
24.85 mi12:45:242:43:086:346:42
7:50
+0:28
25.2M
25.20 mi12:48:172:46:016:352:53
8:22
+0:32
Finish
26.22 mi12:56:212:54:056:398:04
7:55
-0:27

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

6:08 /mi

Average Pace

6:39 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:43

56% of race

Time at Steady Pace

29:57

17% of race

Time at Slower Pace

47:25

27% of race

Average Pace: 6:38 /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 mi10:21:4619:306:1719:30
6:17
#2283
10K
6.21 mi10:40:4938:336:1219:03
6:08
#1894
15K
9.32 mi10:59:5957:436:1219:10
6:10
#1818
20K
12.43 mi11:19:221:17:066:1219:23
6:14
#1774
Half
13.11 mi11:23:361:21:206:124:14
6:12
#1786
25K
15.53 mi11:38:591:36:436:1415:23
6:21
#1811
30K
18.64 mi11:59:401:57:246:1820:41
6:39
#1933
20M
20.00 mi12:08:562:06:406:209:16
6:49
#1990
21M
21.00 mi12:16:222:14:066:237:26
7:26
#2084
35K
21.75 mi12:21:452:19:296:255:23
7:12
#2194
23M
23.00 mi12:31:202:29:046:299:35
7:39
#2411
24M
24.00 mi12:38:422:36:266:317:22
7:22
#2564
40K
24.85 mi12:45:242:43:086:346:42
7:50
#2715
25.2M
25.20 mi12:48:172:46:016:352:53
8:22
#2777
Finish
26.22 mi12:56:212:54:056:398:04
7:55
#3020
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2283218021801694(Top 6%)1608(Top 10%)1608(Top 29%)
10K6.21 mi3.10 mi1894+3891803+3771803+3771594(Top 6%)1517(Top 9%)1517(Top 27%)
15K9.32 mi3.11 mi1818+761730+731730+731694(Top 6%)1608(Top 10%)1608(Top 29%)
20K12.43 mi3.11 mi1774+441687+431687+431746(Top 6%)1660(Top 10%)1660(Top 29%)
Half13.11 mi0.68 mi1786-121697-101697-102007(Top 7%)1916(Top 12%)1916(Top 34%)
25K15.53 mi2.42 mi1811-251723-261723-262078(Top 7%)1979(Top 12%)1979(Top 35%)
30K18.64 mi3.11 mi1933-1221841-1181841-1182666(Top 9%)2523(Top 16%)2523(Top 45%)
20M20.00 mi1.36 mi1990-571895-541895-543025(Top 11%)2815(Top 17%)2815(Top 50%)
21M21.00 mi1.00 mi2084-941983-881983-884249(Top 15%)3807(Top 24%)3807(Top 67%)
35K21.75 mi0.75 mi2194-1102093-1102093-1106508(Top 23%)5374(Top 33%)5374(Top 95%)
23M23.00 mi1.25 mi2411-2172295-2022295-2027562(Top 27%)5892(Top 37%)5892(Top 104%)
24M24.00 mi1.00 mi2564-1532431-1362431-1366779(Top 24%)5378(Top 33%)5378(Top 95%)
40K24.85 mi0.85 mi2715-1512573-1422573-1428956(Top 32%)6480(Top 40%)6480(Top 115%)
25.2M25.20 mi0.35 mi2777-622630-572630-577853(Top 28%)5794(Top 36%)5794(Top 103%)
Finish26.22 mi1.02 mi3020-2432847-2172847-21712230(Top 43%)8133(Top 50%)8133(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1694

Males

1608

M18-39

1608

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1594

Males

1517

M18-39

1517

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1694

Males

1608

M18-39

1608

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1746

Males

1660

M18-39

1660

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

2007

Males

1916

M18-39

1916

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

2078

Males

1979

M18-39

1979

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2666

Males

2523

M18-39

2523

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

3025

Males

2815

M18-39

2815

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4249

Males

3807

M18-39

3807

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6508

Males

5374

M18-39

5374

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7562

Males

5892

M18-39

5892

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6779

Males

5378

M18-39

5378

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8956

Males

6480

M18-39

6480

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7853

Males

5794

M18-39

5794

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

12230

Males

8133

M18-39

8133

Passing Analysis

Category:
Athletes Passed
766
Passed By
1503
Net Change
-737
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2283
5K → 10K40011+389#2283#1894
10K → 15K10024+76#1894#1818
15K → 20K8036+44#1818#1774
20K → Half315-12#1774#1786
Half → 25K4267-25#1786#1811
25K → 30K51173-122#1811#1933
30K → 20M1875-57#1933#1990
20M → 21M15109-94#1990#2084
21M → 35K8118-110#2084#2194
35K → 23M15232-217#2194#2411
23M → 24M18171-153#2411#2564
24M → 40K9160-151#2564#2715
40K → 25.2M567-62#2715#2777
25.2M → Finish2245-243#2777#3020
TOTALS7661503-737
📊

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