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BOSTON MARATHON 2025

Thomas Dellinger

Bib: 814•M

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 6%
Division (M18-39)
#0 / 5642
Top 15%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:33
Rank: #2384
Start → 5K
19:33 | 6:18/mi
10K· 6.21 mi
38:48
Rank: #2093 (+291)
5K → 10K
19:15 | 6:12/mi
15K· 9.32 mi
58:01
Rank: #1960 (+133)
10K → 15K
19:13 | 6:11/mi
20K· 12.43 mi
1:17:11
Rank: #1804 (+156)
15K → 20K
19:10 | 6:10/mi
Half· 13.11 mi
1:21:18
Rank: #1769 (+35)
20K → Half
4:07 | 6:02/mi
25K· 15.53 mi
1:36:15
Rank: #1667 (+102)
Half → 25K
14:57 | 6:10/mi
30K· 18.64 mi
1:55:34
Rank: #1477 (+190)
25K → 30K
19:19 | 6:13/mi
20M
2:04:01
Rank: #1391 (+86)
30K → 20M
8:27 | 6:13/mi
21M
2:10:36
Rank: #1336 (+55)
20M → 21M
6:35 | 6:35/mi
35K· 21.75 mi
2:15:08
Rank: #1301 (+35)
21M → 35K
4:32 | 6:04/mi
23M
2:22:51
Rank: #1208 (+93)
35K → 23M
7:43 | 6:10/mi
24M
2:28:52
Rank: #1152 (+56)
23M → 24M
6:01 | 6:01/mi
40K· 24.85 mi
2:34:06
Rank: #1114 (+38)
24M → 40K
5:14 | 6:07/mi
25.2M
2:36:24
Rank: #1094 (+20)
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:42:25
Rank: #1047 (+47)
25.2M → Finish
6:01 | 5:54/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:21:18
Pace6:12 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:21:07
Pace6:11 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:4219:336:1819:33
6:18
-
10K
6.21 mi10:40:5738:486:1519:15
6:12
-0:06
15K
9.32 mi11:00:1058:016:1319:13
6:11
-0:01
20K
12.43 mi11:19:201:17:116:1319:10
6:10
-0:01
Half
13.11 mi11:23:271:21:186:124:07
6:02
-0:08
25K
15.53 mi11:38:241:36:156:1214:57
6:10
+0:08
30K
18.64 mi11:57:431:55:346:1219:19
6:13
+0:03
20M
20.00 mi12:06:102:04:016:128:27
6:13
0:00
21M
21.00 mi12:12:452:10:366:136:35
6:35
+0:22
35K
21.75 mi12:17:172:15:086:134:32
6:04
-0:31
23M
23.00 mi12:25:002:22:516:137:43
6:10
+0:06
24M
24.00 mi12:31:012:28:526:126:01
6:01
-0:09
40K
24.85 mi12:36:152:34:066:125:14
6:07
+0:06
25.2M
25.20 mi12:38:332:36:246:122:18
6:40
+0:33
Finish
26.22 mi12:44:342:42:256:126:01
5:54
-0:46

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

5:54 /mi

Average Pace

6:12 /mi

Slowest Pace

6:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:32

95% of race

Time at Steady Pace

8:53

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:12 /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 mi10:21:4219:336:1819:33
6:18
#2384
10K
6.21 mi10:40:5738:486:1519:15
6:12
#2093
15K
9.32 mi11:00:1058:016:1319:13
6:11
#1960
20K
12.43 mi11:19:201:17:116:1319:10
6:10
#1804
Half
13.11 mi11:23:271:21:186:124:07
6:02
#1769
25K
15.53 mi11:38:241:36:156:1214:57
6:10
#1667
30K
18.64 mi11:57:431:55:346:1219:19
6:13
#1477
20M
20.00 mi12:06:102:04:016:128:27
6:13
#1391
21M
21.00 mi12:12:452:10:366:136:35
6:35
#1336
35K
21.75 mi12:17:172:15:086:134:32
6:04
#1301
23M
23.00 mi12:25:002:22:516:137:43
6:10
#1208
24M
24.00 mi12:31:012:28:526:126:01
6:01
#1152
40K
24.85 mi12:36:152:34:066:125:14
6:07
#1114
25.2M
25.20 mi12:38:332:36:246:122:18
6:40
#1094
Finish
26.22 mi12:44:342:42:256:126:01
5:54
#1047
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2384227022701765(Top 6%)1677(Top 10%)1677(Top 30%)
10K6.21 mi3.10 mi2093+2911996+2741996+2741875(Top 7%)1782(Top 11%)1782(Top 32%)
15K9.32 mi3.11 mi1960+1331865+1311865+1311765(Top 6%)1677(Top 10%)1677(Top 30%)
20K12.43 mi3.11 mi1804+1561715+1501715+1501438(Top 5%)1363(Top 8%)1363(Top 24%)
Half13.11 mi0.68 mi1769+351681+341681+341256(Top 4%)1190(Top 7%)1190(Top 21%)
25K15.53 mi2.42 mi1667+1021584+971584+971319(Top 5%)1249(Top 8%)1249(Top 22%)
30K18.64 mi3.11 mi1477+1901397+1871397+187967(Top 3%)909(Top 6%)909(Top 16%)
20M20.00 mi1.36 mi1391+861314+831314+83780(Top 3%)737(Top 5%)737(Top 13%)
21M21.00 mi1.00 mi1336+551262+521262+52868(Top 3%)820(Top 5%)820(Top 15%)
35K21.75 mi0.75 mi1301+351227+351227+35851(Top 3%)796(Top 5%)796(Top 14%)
23M23.00 mi1.25 mi1208+931136+911136+91605(Top 2%)570(Top 4%)570(Top 10%)
24M24.00 mi1.00 mi1152+561086+501086+50622(Top 2%)582(Top 4%)582(Top 10%)
40K24.85 mi0.85 mi1114+381050+361050+36589(Top 2%)551(Top 3%)551(Top 10%)
25.2M25.20 mi0.35 mi1094+201031+191031+19710(Top 2%)660(Top 4%)660(Top 12%)
Finish26.22 mi1.02 mi1047+47985+46985+46692(Top 2%)652(Top 4%)652(Top 12%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1765

Males

1677

M18-39

1677

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

1875

Males

1782

M18-39

1782

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1765

Males

1677

M18-39

1677

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1438

Males

1363

M18-39

1363

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1256

Males

1190

M18-39

1190

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1319

Males

1249

M18-39

1249

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

967

Males

909

M18-39

909

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

780

Males

737

M18-39

737

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

868

Males

820

M18-39

820

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

851

Males

796

M18-39

796

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

605

Males

570

M18-39

570

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

622

Males

582

M18-39

582

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

589

Males

551

M18-39

551

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

710

Males

660

M18-39

660

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

692

Males

652

M18-39

652

Passing Analysis

Category:
Athletes Passed
1406
Passed By
69
Net Change
+1337
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2384
5K → 10K31423+291#2384#2093
10K → 15K14613+133#2093#1960
15K → 20K1615+156#1960#1804
20K → Half361+35#1804#1769
Half → 25K1064+102#1769#1667
25K → 30K1977+190#1667#1477
30K → 20M882+86#1477#1391
20M → 21M583+55#1391#1336
21M → 35K361+35#1336#1301
35K → 23M952+93#1301#1208
23M → 24M593+56#1208#1152
24M → 40K391+38#1152#1114
40K → 25.2M211+20#1114#1094
25.2M → Finish503+47#1094#1047
TOTALS140669+1337
📊

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