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BOSTON MARATHON 2025

Thomas Danielsen

Bib: 1459•M

WA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 18%
Gender (Male)
#0 / 16105
Top 28%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:26/mi
20:00
↑ 97↓ 3451.5%
10K· 6.21 mi
6:36/mi
40:30
↑ 79↓ 1380.4%
15K· 9.32 mi
6:38/mi
1:01:06
↑ 67↓ 78
20K· 12.43 mi
6:40/mi
1:21:49
↑ 106↓ 860.1%
Half· 13.11 mi
6:30/mi
1:26:15
↑ 19↓ 370.5%
25K· 15.53 mi
6:52/mi
1:42:53
↑ 66↓ 880.2%
30K· 18.64 mi
7:12/mi
2:05:14
↑ 181↓ 1480.2%
20M
7:18/mi
2:15:09
↑ 64↓ 500.2%
21M
7:36/mi
2:22:45
↑ 106↓ 241.6%
35K· 21.75 mi
7:06/mi
2:28:04
↑ 17↓ 861.7%
23M
7:32/mi
2:37:30
↑ 23↓ 630.6%
24M
7:27/mi
2:44:57
↓ 821.3%
40K· 24.85 mi
7:50/mi
2:51:39
↓ 200.3%
25.2M
7:56/mi
2:54:23
↑ 13↓ 160.2%
Finish· 26.22 mi
6:59/mi
3:01:30
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:15
Pace6:35 /mi
2nd Half
Distance13.11 mi
Time1:35:15
Pace7:16 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:2620:006:2620:00
6:26
-
10K
6.21 mi10:41:5640:306:3120:30
6:36
+0:10
15K
9.32 mi11:02:321:01:066:3320:36
6:38
+0:02
20K
12.43 mi11:23:151:21:496:3520:43
6:40
+0:02
Half
13.11 mi11:27:411:26:156:354:26
6:30
-0:10
25K
15.53 mi11:44:191:42:536:3716:38
6:52
+0:22
30K
18.64 mi12:06:402:05:146:4322:21
7:12
+0:20
20M
20.00 mi12:16:352:15:096:459:55
7:18
+0:06
21M
21.00 mi12:24:112:22:456:487:36
7:36
+0:18
35K
21.75 mi12:29:302:28:046:485:19
7:06
-0:30
23M
23.00 mi12:38:562:37:306:519:26
7:32
+0:26
24M
24.00 mi12:46:232:44:576:527:27
7:27
-0:05
40K
24.85 mi12:53:052:51:396:546:42
7:50
+0:23
25.2M
25.20 mi12:55:492:54:236:552:44
7:56
+0:06
Finish
26.22 mi13:02:563:01:306:567:07
6:59
-0:57

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

6:26 /mi

Average Pace

6:56 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:15

48% of race

Time at Steady Pace

1:01:20

34% of race

Time at Slower Pace

33:55

19% of race

Average Pace: 6:55 /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 mi10:21:2620:006:2620:00
6:26
#3366
10K
6.21 mi10:41:5640:306:3120:30
6:36
#3902
15K
9.32 mi11:02:321:01:066:3320:36
6:38
#4067
20K
12.43 mi11:23:151:21:496:3520:43
6:40
#4033
Half
13.11 mi11:27:411:26:156:354:26
6:30
#4009
25K
15.53 mi11:44:191:42:536:3716:38
6:52
#4163
30K
18.64 mi12:06:402:05:146:4322:21
7:12
#4463
20M
20.00 mi12:16:352:15:096:459:55
7:18
#4577
21M
21.00 mi12:24:112:22:456:487:36
7:36
#4599
35K
21.75 mi12:29:302:28:046:485:19
7:06
#4622
23M
23.00 mi12:38:562:37:306:519:26
7:32
#4766
24M
24.00 mi12:46:232:44:576:527:27
7:27
#4927
40K
24.85 mi12:53:052:51:396:546:42
7:50
#5054
25.2M
25.20 mi12:55:492:54:236:552:44
7:56
#5037
Finish
26.22 mi13:02:563:01:306:567:07
6:59
#5013
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3366319731974496(Top 16%)4213(Top 26%)4213(Top 75%)
10K6.21 mi3.10 mi3902-5363690-4933690-4934455(Top 16%)4174(Top 26%)4174(Top 74%)
15K9.32 mi3.11 mi4067-1653836-1463836-1464496(Top 16%)4213(Top 26%)4213(Top 75%)
20K12.43 mi3.11 mi4033+343798+383798+384157(Top 15%)3899(Top 24%)3899(Top 69%)
Half13.11 mi0.68 mi4009+243775+233775+233657(Top 13%)3457(Top 21%)3457(Top 61%)
25K15.53 mi2.42 mi4163-1543911-1363911-1365349(Top 19%)4877(Top 30%)4877(Top 86%)
30K18.64 mi3.11 mi4463-3004166-2554166-2555845(Top 21%)5197(Top 32%)5197(Top 92%)
20M20.00 mi1.36 mi4577-1144247-814247-815744(Top 20%)5005(Top 31%)5005(Top 89%)
21M21.00 mi1.00 mi4599-224265-184265-185106(Top 18%)4452(Top 28%)4452(Top 79%)
35K21.75 mi0.75 mi4622-234276-114276-115975(Top 21%)5032(Top 31%)5032(Top 89%)
23M23.00 mi1.25 mi4766-1444384-1084384-1086788(Top 24%)5455(Top 34%)5455(Top 97%)
24M24.00 mi1.00 mi4927-1614513-1294513-1297317(Top 26%)5704(Top 35%)5704(Top 101%)
40K24.85 mi0.85 mi5054-1274609-964609-968960(Top 32%)6484(Top 40%)6484(Top 115%)
25.2M25.20 mi0.35 mi5037+174592+174592+175500(Top 19%)4418(Top 27%)4418(Top 78%)
Finish26.22 mi1.02 mi5013+244557+354557+355600(Top 20%)4471(Top 28%)4471(Top 79%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21story building
+97ft-345ft

Overall

4496

Males

4213

M18-39

4213

5K→10K

3.1 - 6.2 mi

Top 16%
×5story building
+79ft-138ft

Overall

4455

Males

4174

M18-39

4174

10K→15K

6.2 - 9.3 mi

Top 16%
×3story building
+67ft-78ft

Overall

4496

Males

4213

M18-39

4213

15K→20K

9.3 - 12.4 mi

Top 15%
×5story building
+106ft-86ft

Overall

4157

Males

3899

M18-39

3899

20K→Half

12.4 - 13.1 mi

Top 13%
×2story building
+19ft-37ft

Overall

3657

Males

3457

M18-39

3457

Half→25K

13.1 - 15.5 mi

Top 19%
×4story building
+66ft-88ft

Overall

5349

Males

4877

M18-39

4877

25K→30K

15.5 - 18.6 mi

Top 21%
×9story building
+181ft-148ft

Overall

5845

Males

5197

M18-39

5197

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5744

Males

5005

M18-39

5005

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

5106

Males

4452

M18-39

4452

21M→35K

21.0 - 21.8 mi

Top 21%
×7story building
+17ft-86ft

Overall

5975

Males

5032

M18-39

5032

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6788

Males

5455

M18-39

5455

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

7317

Males

5704

M18-39

5704

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8960

Males

6484

M18-39

6484

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5500

Males

4418

M18-39

4418

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5600

Males

4471

M18-39

4471

Passing Analysis

Category:
Athletes Passed
639
Passed By
2286
Net Change
-1647
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3366
5K → 10K13549-536#3366#3902
10K → 15K36201-165#3902#4067
15K → 20K11884+34#4067#4033
20K → Half328+24#4033#4009
Half → 25K46200-154#4009#4163
25K → 30K68368-300#4163#4463
30K → 20M44158-114#4463#4577
20M → 21M6789-22#4577#4599
21M → 35K3558-23#4599#4622
35K → 23M50194-144#4622#4766
23M → 24M25186-161#4766#4927
24M → 40K25152-127#4927#5054
40K → 25.2M2710+17#5054#5037
25.2M → Finish5329+24#5037#5013
TOTALS6392286-1647
📊

Passing Visuals

Category:
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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