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BOSTON MARATHON 2025

Eric Blackwell

Bib: 8340•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 16%
Gender (Male)
#0 / 16105
Top 26%
Masters (Masters Men)
#0 / 10463
Top 12%
Division (M50-54)
#0 / 1996
Top 6%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:33
Rank: #4721
Start → 5K
20:33 | 6:37/mi
10K· 6.21 mi
41:14
Rank: #4790 (-69)
5K → 10K
20:41 | 6:39/mi
15K· 9.32 mi
1:02:07
Rank: #4915 (-125)
10K → 15K
20:53 | 6:43/mi
20K· 12.43 mi
1:23:19
Rank: #5039 (-124)
15K → 20K
21:12 | 6:49/mi
Half· 13.11 mi
1:27:50
Rank: #5001 (+38)
20K → Half
4:31 | 6:37/mi
25K· 15.53 mi
1:44:24
Rank: #4977 (+24)
Half → 25K
16:34 | 6:50/mi
30K· 18.64 mi
2:06:18
Rank: #4960 (+17)
25K → 30K
21:54 | 7:03/mi
20M
2:15:51
Rank: #4866 (+94)
30K → 20M
9:33 | 7:02/mi
21M
2:23:19
Rank: #4808 (+58)
20M → 21M
7:28 | 7:28/mi
35K· 21.75 mi
2:28:31
Rank: #4804 (+4)
21M → 35K
5:12 | 6:57/mi
23M
2:37:23
Rank: #4731 (+73)
35K → 23M
8:52 | 7:05/mi
24M
2:44:15
Rank: #4666 (+65)
23M → 24M
6:52 | 6:52/mi
40K· 24.85 mi
2:50:13
Rank: #4610 (+56)
24M → 40K
5:58 | 6:59/mi
25.2M
2:52:44
Rank: #4560 (+50)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:59:23
Rank: #4486 (+74)
25.2M → Finish
6:39 | 6:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:50
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:31:33
Pace6:59 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:4820:336:3720:33
6:37
-
10K
6.21 mi10:48:2941:146:3820:41
6:39
+0:02
15K
9.32 mi11:09:221:02:076:4020:53
6:43
+0:04
20K
12.43 mi11:30:341:23:196:4221:12
6:49
+0:06
Half
13.11 mi11:35:051:27:506:424:31
6:37
-0:12
25K
15.53 mi11:51:391:44:246:4316:34
6:50
+0:13
30K
18.64 mi12:13:332:06:186:4721:54
7:03
+0:13
20M
20.00 mi12:23:062:15:516:489:33
7:02
-0:01
21M
21.00 mi12:30:342:23:196:497:28
7:28
+0:26
35K
21.75 mi12:35:462:28:316:505:12
6:57
-0:31
23M
23.00 mi12:44:382:37:236:518:52
7:05
+0:08
24M
24.00 mi12:51:302:44:156:516:52
6:52
-0:13
40K
24.85 mi12:57:282:50:136:515:58
6:59
+0:07
25.2M
25.20 mi12:59:592:52:446:512:31
7:18
+0:19
Finish
26.22 mi13:06:382:59:236:516:39
6:32
-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

6:32 /mi

Average Pace

6:51 /mi

Slowest Pace

7:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:24

94% of race

Time at Steady Pace

9:59

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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 mi10:27:4820:336:3720:33
6:37
#4721
10K
6.21 mi10:48:2941:146:3820:41
6:39
#4790
15K
9.32 mi11:09:221:02:076:4020:53
6:43
#4915
20K
12.43 mi11:30:341:23:196:4221:12
6:49
#5039
Half
13.11 mi11:35:051:27:506:424:31
6:37
#5001
25K
15.53 mi11:51:391:44:246:4316:34
6:50
#4977
30K
18.64 mi12:13:332:06:186:4721:54
7:03
#4960
20M
20.00 mi12:23:062:15:516:489:33
7:02
#4866
21M
21.00 mi12:30:342:23:196:497:28
7:28
#4808
35K
21.75 mi12:35:462:28:316:505:12
6:57
#4804
23M
23.00 mi12:44:382:37:236:518:52
7:05
#4731
24M
24.00 mi12:51:302:44:156:516:52
6:52
#4666
40K
24.85 mi12:57:282:50:136:515:58
6:59
#4610
25.2M
25.20 mi12:59:592:52:446:512:31
7:18
#4560
Finish
26.22 mi13:06:382:59:236:516:39
6:32
#4486
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi4721442944295288(Top 19%)4887(Top 30%)4887(Top 245%)
10K6.21 mi3.10 mi4790-694481-524481-524947(Top 17%)4617(Top 29%)4617(Top 231%)
15K9.32 mi3.11 mi4915-1254585-1044585-1045288(Top 19%)4887(Top 30%)4887(Top 245%)
20K12.43 mi3.11 mi5039-1244691-1064691-1065538(Top 19%)5055(Top 31%)5055(Top 253%)
Half13.11 mi0.68 mi5001+384651+404651+404624(Top 16%)4317(Top 27%)4317(Top 216%)
25K15.53 mi2.42 mi4977+244618+334618+335139(Top 18%)4714(Top 29%)4714(Top 236%)
30K18.64 mi3.11 mi4960+174582+364582+365009(Top 18%)4548(Top 28%)4548(Top 228%)
20M20.00 mi1.36 mi4866+944501+814501+814291(Top 15%)3914(Top 24%)3914(Top 196%)
21M21.00 mi1.00 mi4808+584443+584443+584456(Top 16%)3974(Top 25%)3974(Top 199%)
35K21.75 mi0.75 mi4804+44428+154428+155061(Top 18%)4428(Top 27%)4428(Top 222%)
23M23.00 mi1.25 mi4731+734353+754353+754243(Top 15%)3772(Top 23%)3772(Top 189%)
24M24.00 mi1.00 mi4666+654291+624291+623922(Top 14%)3475(Top 22%)3475(Top 174%)
40K24.85 mi0.85 mi4610+564235+564235+563784(Top 13%)3329(Top 21%)3329(Top 167%)
25.2M25.20 mi0.35 mi4560+504187+484187+482585(Top 9%)2319(Top 14%)2319(Top 116%)
Finish26.22 mi1.02 mi4486+744116+714116+712967(Top 10%)2648(Top 16%)2648(Top 133%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5288

Males

4887

M50-54

4887

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4947

Males

4617

M50-54

4617

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5288

Males

4887

M50-54

4887

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5538

Males

5055

M50-54

5055

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4624

Males

4317

M50-54

4317

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

5139

Males

4714

M50-54

4714

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

5009

Males

4548

M50-54

4548

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4291

Males

3914

M50-54

3914

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4456

Males

3974

M50-54

3974

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

5061

Males

4428

M50-54

4428

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

4243

Males

3772

M50-54

3772

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3922

Males

3475

M50-54

3475

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3784

Males

3329

M50-54

3329

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2585

Males

2319

M50-54

2319

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2967

Males

2648

M50-54

2648

Passing Analysis

Category:
Athletes Passed
1332
Passed By
1097
Net Change
+235
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4721
5K → 10K136205-69#4721#4790
10K → 15K69194-125#4790#4915
15K → 20K94218-124#4915#5039
20K → Half5113+38#5039#5001
Half → 25K11288+24#5001#4977
25K → 30K173156+17#4977#4960
30K → 20M11622+94#4960#4866
20M → 21M9133+58#4866#4808
21M → 35K5551+4#4808#4804
35K → 23M12047+73#4804#4731
23M → 24M8924+65#4731#4666
24M → 40K8125+56#4666#4610
40K → 25.2M566+50#4610#4560
25.2M → Finish8915+74#4560#4486
TOTALS13321097+235
📊

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