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BOSTON MARATHON 2025

Connor Blackford

Bib: 1547•M

MO

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 9%
Division (M18-39)
#0 / 5642
Top 22%
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
6:00/mi
18:40
↑ 97↓ 3451.5%
10K· 6.21 mi
6:13/mi
37:59
↑ 79↓ 1380.4%
15K· 9.32 mi
6:16/mi
57:27
↑ 67↓ 78
20K· 12.43 mi
6:23/mi
1:17:16
↑ 106↓ 860.1%
Half· 13.11 mi
6:11/mi
1:21:29
↑ 19↓ 370.5%
25K· 15.53 mi
6:22/mi
1:36:54
↑ 66↓ 880.2%
30K· 18.64 mi
6:33/mi
1:57:16
↑ 181↓ 1480.2%
20M
6:37/mi
2:06:16
↑ 64↓ 500.2%
21M
6:52/mi
2:13:08
↑ 106↓ 241.6%
35K· 21.75 mi
6:18/mi
2:17:51
↑ 17↓ 861.7%
23M
6:39/mi
2:26:10
↑ 23↓ 630.6%
24M
6:15/mi
2:32:25
↓ 821.3%
40K· 24.85 mi
6:21/mi
2:37:51
↓ 200.3%
25.2M
6:40/mi
2:40:09
↑ 13↓ 160.2%
Finish· 26.22 mi
5:48/mi
2:46:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:29
Pace6:13 /mi
2nd Half
Distance13.11 mi
Time1:24:35
Pace6:27 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:1418:406:0018:40
6:00
-
10K
6.21 mi10:38:3337:596:0719:19
6:13
+0:13
15K
9.32 mi10:58:0157:276:1019:28
6:16
+0:03
20K
12.43 mi11:17:501:17:166:1319:49
6:23
+0:07
Half
13.11 mi11:22:031:21:296:134:13
6:11
-0:12
25K
15.53 mi11:37:281:36:546:1415:25
6:22
+0:11
30K
18.64 mi11:57:501:57:166:1720:22
6:33
+0:11
20M
20.00 mi12:06:502:06:166:199:00
6:37
+0:04
21M
21.00 mi12:13:422:13:086:206:52
6:52
+0:15
35K
21.75 mi12:18:252:17:516:204:43
6:18
-0:34
23M
23.00 mi12:26:442:26:106:218:19
6:39
+0:21
24M
24.00 mi12:32:592:32:256:216:15
6:15
-0:24
40K
24.85 mi12:38:252:37:516:215:26
6:21
+0:06
25.2M
25.20 mi12:40:432:40:096:212:18
6:40
+0:19
Finish
26.22 mi12:46:382:46:046:205:55
5:48
-0:52

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

5:48 /mi

Average Pace

6:20 /mi

Slowest Pace

6:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:24

60% of race

Time at Steady Pace

59:48

36% of race

Time at Slower Pace

6:52

4% of race

Average Pace: 6:20 /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 mi10:19:1418:406:0018:40
6:00
#1104
10K
6.21 mi10:38:3337:596:0719:19
6:13
#1478
15K
9.32 mi10:58:0157:276:1019:28
6:16
#1670
20K
12.43 mi11:17:501:17:166:1319:49
6:23
#1834
Half
13.11 mi11:22:031:21:296:134:13
6:11
#1842
25K
15.53 mi11:37:281:36:546:1415:25
6:22
#1876
30K
18.64 mi11:57:501:57:166:1720:22
6:33
#1899
20M
20.00 mi12:06:502:06:166:199:00
6:37
#1895
21M
21.00 mi12:13:422:13:086:206:52
6:52
#1848
35K
21.75 mi12:18:252:17:516:204:43
6:18
#1818
23M
23.00 mi12:26:442:26:106:218:19
6:39
#1795
24M
24.00 mi12:32:592:32:256:216:15
6:15
#1733
40K
24.85 mi12:38:252:37:516:215:26
6:21
#1680
25.2M
25.20 mi12:40:432:40:096:212:18
6:40
#1644
Finish
26.22 mi12:46:382:46:046:205:55
5:48
#1536
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1104104510452173(Top 8%)2071(Top 13%)2071(Top 37%)
10K6.21 mi3.10 mi1478-3741406-3611406-3611997(Top 7%)1901(Top 12%)1901(Top 34%)
15K9.32 mi3.11 mi1670-1921588-1821588-1822173(Top 8%)2071(Top 13%)2071(Top 37%)
20K12.43 mi3.11 mi1834-1641745-1571745-1572392(Top 8%)2281(Top 14%)2281(Top 40%)
Half13.11 mi0.68 mi1842-81753-81753-81856(Top 7%)1769(Top 11%)1769(Top 31%)
25K15.53 mi2.42 mi1876-341787-341787-342129(Top 7%)2025(Top 13%)2025(Top 36%)
30K18.64 mi3.11 mi1899-231809-221809-222204(Top 8%)2087(Top 13%)2087(Top 37%)
20M20.00 mi1.36 mi1895+41803+61803+62097(Top 7%)1984(Top 12%)1984(Top 35%)
21M21.00 mi1.00 mi1848+471757+461757+461737(Top 6%)1638(Top 10%)1638(Top 29%)
35K21.75 mi0.75 mi1818+301727+301727+301615(Top 6%)1515(Top 9%)1515(Top 27%)
23M23.00 mi1.25 mi1795+231703+241703+241984(Top 7%)1854(Top 12%)1854(Top 33%)
24M24.00 mi1.00 mi1733+621641+621641+621164(Top 4%)1091(Top 7%)1091(Top 19%)
40K24.85 mi0.85 mi1680+531590+511590+511107(Top 4%)1036(Top 6%)1036(Top 18%)
25.2M25.20 mi0.35 mi1644+361556+341556+34726(Top 3%)676(Top 4%)676(Top 12%)
Finish26.22 mi1.02 mi1536+1081453+1031453+103528(Top 2%)495(Top 3%)495(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21story building
+97ft-345ft

Overall

2173

Males

2071

M18-39

2071

5K→10K

3.1 - 6.2 mi

Top 7%
×5story building
+79ft-138ft

Overall

1997

Males

1901

M18-39

1901

10K→15K

6.2 - 9.3 mi

Top 8%
×3story building
+67ft-78ft

Overall

2173

Males

2071

M18-39

2071

15K→20K

9.3 - 12.4 mi

Top 8%
×5story building
+106ft-86ft

Overall

2392

Males

2281

M18-39

2281

20K→Half

12.4 - 13.1 mi

Top 7%
×2story building
+19ft-37ft

Overall

1856

Males

1769

M18-39

1769

Half→25K

13.1 - 15.5 mi

Top 7%
×4story building
+66ft-88ft

Overall

2129

Males

2025

M18-39

2025

25K→30K

15.5 - 18.6 mi

Top 8%
×9story building
+181ft-148ft

Overall

2204

Males

2087

M18-39

2087

30K→20M

18.6 - 20.0 mi

Top 7%
×5story building
+64ft-50ft

Overall

2097

Males

1984

M18-39

1984

20M→21M

20.0 - 21.0 mi

Top 6%
×8story building
+106ft-24ft

Overall

1737

Males

1638

M18-39

1638

21M→35K

21.0 - 21.8 mi

Top 6%
×7story building
+17ft-86ft

Overall

1615

Males

1515

M18-39

1515

35K→23M

21.8 - 23.0 mi

Top 7%
×5story building
+23ft-63ft

Overall

1984

Males

1854

M18-39

1854

23M→24M

23.0 - 24.0 mi

Top 4%
×6story building
+12ft-82ft

Overall

1164

Males

1091

M18-39

1091

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1107

Males

1036

M18-39

1036

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

726

Males

676

M18-39

676

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2story building
+22ft-21ft

Overall

528

Males

495

M18-39

495

Passing Analysis

Category:
Athletes Passed
626
Passed By
1058
Net Change
-432
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1104
5K → 10K7381-374#1104#1478
10K → 15K13205-192#1478#1670
15K → 20K24188-164#1670#1834
20K → Half311-8#1834#1842
Half → 25K3569-34#1842#1876
25K → 30K79102-23#1876#1899
30K → 20M3733+4#1899#1895
20M → 21M6518+47#1895#1848
21M → 35K355+30#1848#1818
35K → 23M5734+23#1818#1795
23M → 24M675+62#1795#1733
24M → 40K585+53#1733#1680
40K → 25.2M382+36#1680#1644
25.2M → Finish1080+108#1644#1536
TOTALS6261058-432
📊

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