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BOSTON MARATHON 2025

Peter Buffington

Bib: 10616•M

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 29%
Gender (Male)
#0 / 16105
Top 42%
Masters (Masters Men)
#0 / 10463
Top 29%
Division (M45-49)
#0 / 2386
Top 42%
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
7:00/mi
21:45
↑ 97↓ 3451.5%
10K· 6.21 mi
7:01/mi
43:34
↑ 79↓ 1380.4%
15K· 9.32 mi
7:04/mi
1:05:30
↑ 67↓ 78
20K· 12.43 mi
7:18/mi
1:28:10
↑ 106↓ 860.1%
Half· 13.11 mi
7:14/mi
1:33:06
↑ 19↓ 370.5%
25K· 15.53 mi
7:25/mi
1:51:06
↑ 66↓ 880.2%
30K· 18.64 mi
7:37/mi
2:14:47
↑ 181↓ 1480.2%
20M
7:39/mi
2:25:11
↑ 64↓ 500.2%
21M
8:07/mi
2:33:18
↑ 106↓ 241.6%
35K· 21.75 mi
7:29/mi
2:38:54
↑ 17↓ 861.7%
23M
7:49/mi
2:48:41
↑ 23↓ 630.6%
24M
7:43/mi
2:56:24
↓ 821.3%
40K· 24.85 mi
7:51/mi
3:03:07
↓ 200.3%
25.2M
8:33/mi
3:06:04
↑ 13↓ 160.2%
Finish· 26.22 mi
7:40/mi
3:13:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:06
Pace7:06 /mi
2nd Half
Distance13.11 mi
Time1:40:47
Pace7:41 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:4821:457:0021:45
7:00
-
10K
6.21 mi11:09:3743:347:0121:49
7:01
+0:01
15K
9.32 mi11:31:331:05:307:0221:56
7:04
+0:03
20K
12.43 mi11:54:131:28:107:0622:40
7:18
+0:14
Half
13.11 mi11:59:091:33:067:064:56
7:14
-0:04
25K
15.53 mi12:17:091:51:067:0918:00
7:25
+0:11
30K
18.64 mi12:40:502:14:477:1423:41
7:37
+0:12
20M
20.00 mi12:51:142:25:117:1610:24
7:39
+0:02
21M
21.00 mi12:59:212:33:187:188:07
8:07
+0:28
35K
21.75 mi13:04:572:38:547:185:36
7:29
-0:38
23M
23.00 mi13:14:442:48:417:209:47
7:49
+0:20
24M
24.00 mi13:22:272:56:247:217:43
7:43
-0:06
40K
24.85 mi13:29:103:03:077:226:43
7:51
+0:08
25.2M
25.20 mi13:32:073:06:047:232:57
8:33
+0:42
Finish
26.22 mi13:39:563:13:537:247:49
7:40
-0:53

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

7:00 /mi

Average Pace

7:24 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:06

48% of race

Time at Steady Pace

1:23:00

43% of race

Time at Slower Pace

17:47

9% of race

Average Pace: 7:24 /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 mi10:47:4821:457:0021:45
7:00
#7822
10K
6.21 mi11:09:3743:347:0121:49
7:01
#7933
15K
9.32 mi11:31:331:05:307:0221:56
7:04
#7953
20K
12.43 mi11:54:131:28:107:0622:40
7:18
#8142
Half
13.11 mi11:59:091:33:067:064:56
7:14
#8178
25K
15.53 mi12:17:091:51:067:0918:00
7:25
#8305
30K
18.64 mi12:40:502:14:477:1423:41
7:37
#8256
20M
20.00 mi12:51:142:25:117:1610:24
7:39
#8211
21M
21.00 mi12:59:212:33:187:188:07
8:07
#8131
35K
21.75 mi13:04:572:38:547:185:36
7:29
#8099
23M
23.00 mi13:14:442:48:417:209:47
7:49
#8093
24M
24.00 mi13:22:272:56:247:217:43
7:43
#8104
40K
24.85 mi13:29:103:03:077:226:43
7:51
#8125
25.2M
25.20 mi13:32:073:06:047:232:57
8:33
#8125
Finish
26.22 mi13:39:563:13:537:247:49
7:40
#8180
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7822688468848032(Top 28%)6962(Top 43%)6962(Top 292%)
10K6.21 mi3.10 mi7933-1116938-546938-548075(Top 28%)7017(Top 44%)7017(Top 294%)
15K9.32 mi3.11 mi7953-206948-106948-108032(Top 28%)6962(Top 43%)6962(Top 292%)
20K12.43 mi3.11 mi8142-1897044-967044-969011(Top 32%)7454(Top 46%)7454(Top 312%)
Half13.11 mi0.68 mi8178-367056-127056-129279(Top 33%)7622(Top 47%)7622(Top 319%)
25K15.53 mi2.42 mi8305-1277116-607116-609314(Top 33%)7505(Top 47%)7505(Top 315%)
30K18.64 mi3.11 mi8256+497033+837033+838615(Top 30%)6940(Top 43%)6940(Top 291%)
20M20.00 mi1.36 mi8211+456974+596974+598037(Top 28%)6464(Top 40%)6464(Top 271%)
21M21.00 mi1.00 mi8131+806889+856889+858036(Top 28%)6271(Top 39%)6271(Top 263%)
35K21.75 mi0.75 mi8099+326846+436846+438483(Top 30%)6575(Top 41%)6575(Top 276%)
23M23.00 mi1.25 mi8093+66794+526794+528662(Top 30%)6528(Top 41%)6528(Top 274%)
24M24.00 mi1.00 mi8104-116765+296765+299179(Top 32%)6739(Top 42%)6739(Top 282%)
40K24.85 mi0.85 mi8125-216756+96756+99150(Top 32%)6597(Top 41%)6597(Top 276%)
25.2M25.20 mi0.35 mi81256743+136743+139040(Top 32%)6459(Top 40%)6459(Top 271%)
Finish26.22 mi1.02 mi8180-556736+76736+710449(Top 37%)7219(Top 45%)7219(Top 303%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

8032

Males

6962

M45-49

6962

5K→10K

3.1 - 6.2 mi

Top 28%
×5story building
+79ft-138ft

Overall

8075

Males

7017

M45-49

7017

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

8032

Males

6962

M45-49

6962

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

9011

Males

7454

M45-49

7454

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

9279

Males

7622

M45-49

7622

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

9314

Males

7505

M45-49

7505

25K→30K

15.5 - 18.6 mi

Top 30%
×9story building
+181ft-148ft

Overall

8615

Males

6940

M45-49

6940

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

8037

Males

6464

M45-49

6464

20M→21M

20.0 - 21.0 mi

Top 28%
×8story building
+106ft-24ft

Overall

8036

Males

6271

M45-49

6271

21M→35K

21.0 - 21.8 mi

Top 30%
×7story building
+17ft-86ft

Overall

8483

Males

6575

M45-49

6575

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8662

Males

6528

M45-49

6528

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

9179

Males

6739

M45-49

6739

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

9150

Males

6597

M45-49

6597

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

9040

Males

6459

M45-49

6459

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2story building
+22ft-21ft

Overall

10449

Males

7219

M45-49

7219

Passing Analysis

Category:
Athletes Passed
1358
Passed By
1716
Net Change
-358
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7822
5K → 10K157268-111#7822#7933
10K → 15K131151-20#7933#7953
15K → 20K89278-189#7953#8142
20K → Half1854-36#8142#8178
Half → 25K85212-127#8178#8305
25K → 30K224175+49#8305#8256
30K → 20M12580+45#8256#8211
20M → 21M12949+80#8211#8131
21M → 35K7139+32#8131#8099
35K → 23M111105+6#8099#8093
23M → 24M7788-11#8093#8104
24M → 40K5677-21#8104#8125
40K → 25.2M30300#8125#8125
25.2M → Finish55110-55#8125#8180
TOTALS13581716-358
📊

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