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BOSTON MARATHON 2025

Tiernan Swan

Bib: 4422•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 15%
Masters (Masters Men)
#0 / 10463
Top 4%
Division (M40-44)
#0 / 2247
Top 13%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:45
Rank: #1188
Start → 5K
18:45 | 6:02/mi
10K· 6.21 mi
37:50
Rank: #1382 (-194)
5K → 10K
19:05 | 6:09/mi
15K· 9.32 mi
57:03
Rank: #1488 (-106)
10K → 15K
19:13 | 6:11/mi
20K· 12.43 mi
1:16:35
Rank: #1584 (-96)
15K → 20K
19:32 | 6:17/mi
Half· 13.11 mi
1:20:50
Rank: #1611 (-27)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:36:28
Rank: #1733 (-122)
Half → 25K
15:38 | 6:27/mi
30K· 18.64 mi
1:57:12
Rank: #1887 (-154)
25K → 30K
20:44 | 6:40/mi
20M
2:06:22
Rank: #1926 (-39)
30K → 20M
9:10 | 6:45/mi
21M
2:13:38
Rank: #1976 (-50)
20M → 21M
7:16 | 7:16/mi
35K· 21.75 mi
2:18:43
Rank: #2029 (-53)
21M → 35K
5:05 | 6:48/mi
23M
2:27:49
Rank: #2159 (-130)
35K → 23M
9:06 | 7:16/mi
24M
2:35:11
Rank: #2303 (-144)
23M → 24M
7:22 | 7:22/mi
40K· 24.85 mi
2:41:33
Rank: #2409 (-106)
24M → 40K
6:22 | 7:27/mi
25.2M
2:44:23
Rank: #2466 (-57)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
2:51:30
Rank: #2530 (-64)
25.2M → Finish
7:07 | 6:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:20:50
Pace6:10 /mi
2nd Half
Distance13.11 mi
Time1:30:40
Pace6:55 /mi
📊Positive Split: 12.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3018:456:0218:45
6:02
-
10K
6.21 mi10:40:3537:506:0519:05
6:09
+0:07
15K
9.32 mi10:59:4857:036:0719:13
6:11
+0:02
20K
12.43 mi11:19:201:16:356:1019:32
6:17
+0:06
Half
13.11 mi11:23:351:20:506:104:15
6:14
-0:03
25K
15.53 mi11:39:131:36:286:1315:38
6:27
+0:13
30K
18.64 mi11:59:571:57:126:1720:44
6:40
+0:13
20M
20.00 mi12:09:072:06:226:199:10
6:45
+0:05
21M
21.00 mi12:16:232:13:386:227:16
7:16
+0:31
35K
21.75 mi12:21:282:18:436:235:05
6:48
-0:28
23M
23.00 mi12:30:342:27:496:269:06
7:16
+0:28
24M
24.00 mi12:37:562:35:116:287:22
7:22
+0:06
40K
24.85 mi12:44:182:41:336:306:22
7:27
+0:05
25.2M
25.20 mi12:47:082:44:236:312:50
8:13
+0:46
Finish
26.22 mi12:54:152:51:306:337:07
6:59
-1:14

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

6:02 /mi

Average Pace

6:33 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:28

56% of race

Time at Steady Pace

42:06

25% of race

Time at Slower Pace

32:56

19% of race

Average Pace: 6:32 /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 mi10:21:3018:456:0218:45
6:02
#1188
10K
6.21 mi10:40:3537:506:0519:05
6:09
#1382
15K
9.32 mi10:59:4857:036:0719:13
6:11
#1488
20K
12.43 mi11:19:201:16:356:1019:32
6:17
#1584
Half
13.11 mi11:23:351:20:506:104:15
6:14
#1611
25K
15.53 mi11:39:131:36:286:1315:38
6:27
#1733
30K
18.64 mi11:59:571:57:126:1720:44
6:40
#1887
20M
20.00 mi12:09:072:06:226:199:10
6:45
#1926
21M
21.00 mi12:16:232:13:386:227:16
7:16
#1976
35K
21.75 mi12:21:282:18:436:235:05
6:48
#2029
23M
23.00 mi12:30:342:27:496:269:06
7:16
#2159
24M
24.00 mi12:37:562:35:116:287:22
7:22
#2303
40K
24.85 mi12:44:182:41:336:306:22
7:27
#2409
25.2M
25.20 mi12:47:082:44:236:312:50
8:13
#2466
Finish
26.22 mi12:54:152:51:306:337:07
6:59
#2530
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1188112411241794(Top 6%)1706(Top 11%)1706(Top 76%)
10K6.21 mi3.10 mi1382-1941315-1911315-1911653(Top 6%)1574(Top 10%)1574(Top 70%)
15K9.32 mi3.11 mi1488-1061413-981413-981794(Top 6%)1706(Top 11%)1706(Top 76%)
20K12.43 mi3.11 mi1584-961503-901503-901966(Top 7%)1873(Top 12%)1873(Top 83%)
Half13.11 mi0.68 mi1611-271528-251528-252181(Top 8%)2085(Top 13%)2085(Top 93%)
25K15.53 mi2.42 mi1733-1221646-1181646-1182612(Top 9%)2486(Top 15%)2486(Top 111%)
30K18.64 mi3.11 mi1887-1541798-1521798-1522770(Top 10%)2622(Top 16%)2622(Top 117%)
20M20.00 mi1.36 mi1926-391833-351833-352679(Top 9%)2513(Top 16%)2513(Top 112%)
21M21.00 mi1.00 mi1976-501880-471880-473469(Top 12%)3181(Top 20%)3181(Top 142%)
35K21.75 mi0.75 mi2029-531929-491929-494093(Top 14%)3668(Top 23%)3668(Top 163%)
23M23.00 mi1.25 mi2159-1302055-1262055-1265265(Top 19%)4501(Top 28%)4501(Top 200%)
24M24.00 mi1.00 mi2303-1442192-1372192-1376802(Top 24%)5401(Top 34%)5401(Top 240%)
40K24.85 mi0.85 mi2409-1062287-952287-956460(Top 23%)5116(Top 32%)5116(Top 228%)
25.2M25.20 mi0.35 mi2466-572339-522339-527082(Top 25%)5372(Top 33%)5372(Top 239%)
Finish26.22 mi1.02 mi2530-642397-582397-585619(Top 20%)4490(Top 28%)4490(Top 200%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1794

Males

1706

M40-44

1706

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1653

Males

1574

M40-44

1574

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1794

Males

1706

M40-44

1706

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1966

Males

1873

M40-44

1873

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2181

Males

2085

M40-44

2085

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2612

Males

2486

M40-44

2486

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2770

Males

2622

M40-44

2622

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2679

Males

2513

M40-44

2513

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3469

Males

3181

M40-44

3181

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

4093

Males

3668

M40-44

3668

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5265

Males

4501

M40-44

4501

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6802

Males

5401

M40-44

5401

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6460

Males

5116

M40-44

5116

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7082

Males

5372

M40-44

5372

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5619

Males

4490

M40-44

4490

Passing Analysis

Category:
Athletes Passed
274
Passed By
1616
Net Change
-1342
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1188
5K → 10K23217-194#1188#1382
10K → 15K20126-106#1382#1488
15K → 20K32128-96#1488#1584
20K → Half229-27#1584#1611
Half → 25K21143-122#1611#1733
25K → 30K44198-154#1733#1887
30K → 20M2564-39#1887#1926
20M → 21M2373-50#1926#1976
21M → 35K1871-53#1976#2029
35K → 23M15145-130#2029#2159
23M → 24M15159-144#2159#2303
24M → 40K13119-106#2303#2409
40K → 25.2M259-57#2409#2466
25.2M → Finish2185-64#2466#2530
TOTALS2741616-1342
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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