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BOSTON MARATHON 2025

Alex Fenstermaker

CO

Bib: 6046 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 18%
Gender (Male)
#0 / 16105
Top 29%
Masters (Masters Men)
#0 / 10463
Top 15%
Division (M40-44)
#0 / 2247
Top 37%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:36/mi
20:30
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:35/mi
40:57
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:37/mi
1:01:31
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:46/mi
1:22:31
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:37/mi
1:27:02
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:49/mi
1:43:33
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:01/mi
2:05:22
↑ 181↓ 1480.2%
138 ft elev
20M
7:08/mi
2:15:04
↑ 64↓ 500.2%
148 ft elev
21M
7:31/mi
2:22:35
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
6:57/mi
2:27:47
↑ 17↓ 861.7%
156 ft elev
23M
7:18/mi
2:36:55
↑ 23↓ 630.6%
116 ft elev
24M
7:17/mi
2:44:12
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:45/mi
2:50:50
↓ 200.3%
20 ft elev
25.2M
8:33/mi
2:53:47
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:50/mi
3:01:46
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:27:026:38 /mi⚡ faster
2nd Half
1:34:447:14 /mi+8.8%
Positive split — 8.8% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
20:306:363.11 mi20:30
6:36
-
10K
40:576:353.10 mi20:27
6:35
-0:01
15K
1:01:316:363.11 mi20:34
6:37
+0:02
20K
1:22:316:383.11 mi21:00
6:46
+0:09
Half(13.11 mi)
1:27:026:380.68 mi4:31
6:37
-0:09
25K
1:43:336:402.42 mi16:31
6:49
+0:12
30K
2:05:226:443.11 mi21:49
7:01
+0:12
20M
2:15:046:451.36 mi9:42
7:08
+0:07
21M
2:22:356:471.00 mi7:31
7:31
+0:23
35K
2:27:476:480.75 mi5:12
6:57
-0:34
23M
2:36:556:491.25 mi9:08
7:18
+0:21
24M
2:44:126:511.00 mi7:17
7:17
-0:01
40K
2:50:506:520.85 mi6:38
7:45
+0:28
25.2M
2:53:476:540.35 mi2:57
8:33
+0:48
Finish(26.22 mi)
3:01:466:561.02 mi7:59
7:50
-0:43
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:35 /mi

Average Pace

6:56 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:06:02

36% of race

Time at Steady Pace

1:21:31

45% of race

Time at Slower Pace

34:13

19% of race

Average Pace: 6:56 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi457642994299438841184118
10K3.10 mi4418+1584155+1444155+144431240504050
15K3.11 mi4394+244131+244131+24438841184118
20K3.11 mi4471-774191-604191-60490945374537
Half(13.11 mi)0.68 mi4472-141914191456042534253
25K2.42 mi4511-394220-294220-29495845524552
30K3.11 mi4532-214223-34223-3482043924392
20M1.36 mi4545-134219+44219+4485743724372
21M1.00 mi4527+184201+184201+18467541324132
35K0.75 mi4525+24193+84193+8502043874387
23M1.25 mi4558-334204-114204-11541246014601
24M1.00 mi4641-834270-664270-66627750775077
40K0.85 mi4816-1754412-1424412-142842361976197
25.2M0.35 mi4889-734467-554467-55898564046404
Finish(26.22 mi)1.02 mi5060-1714597-1304597-1301163178207820

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21story building
+97ft-345ft

Overall

4388

Males

4118

M40-44

4118

5K→10K

3.1 - 6.2 mi

Top 15%
×5story building
+79ft-138ft

Overall

4312

Males

4050

M40-44

4050

10K→15K

6.2 - 9.3 mi

Top 15%
×3story building
+67ft-78ft

Overall

4388

Males

4118

M40-44

4118

15K→20K

9.3 - 12.4 mi

Top 17%
×5story building
+106ft-86ft

Overall

4909

Males

4537

M40-44

4537

20K→Half

12.4 - 13.1 mi

Top 16%
×2story building
+19ft-37ft

Overall

4560

Males

4253

M40-44

4253

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4958

Males

4552

M40-44

4552

25K→30K

15.5 - 18.6 mi

Top 17%
×9story building
+181ft-148ft

Overall

4820

Males

4392

M40-44

4392

30K→20M

18.6 - 20.0 mi

Top 17%
×5story building
+64ft-50ft

Overall

4857

Males

4372

M40-44

4372

20M→21M

20.0 - 21.0 mi

Top 16%
×8story building
+106ft-24ft

Overall

4675

Males

4132

M40-44

4132

21M→35K

21.0 - 21.8 mi

Top 18%
×7story building
+17ft-86ft

Overall

5020

Males

4387

M40-44

4387

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

5412

Males

4601

M40-44

4601

23M→24M

23.0 - 24.0 mi

Top 22%
×6story building
+12ft-82ft

Overall

6277

Males

5077

M40-44

5077

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8423

Males

6197

M40-44

6197

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8985

Males

6404

M40-44

6404

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

11631

Males

7820

M40-44

7820

Passing Analysis

Category:
Passed
1033
Passed By
1517
Net Change
-484
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4576
5K → 10K24789+158#4576#4418
10K → 15K11187+24#4418#4394
15K → 20K82159-77#4394#4471
20K → Half1819-1#4471#4472
Half → 25K99138-39#4472#4511
25K → 30K138159-21#4511#4532
30K → 20M6982-13#4532#4545
20M → 21M8163+18#4545#4527
21M → 35K4240+2#4527#4525
35K → 23M67100-33#4525#4558
23M → 24M40123-83#4558#4641
24M → 40K19194-175#4641#4816
40K → 25.2M1386-73#4816#4889
25.2M → Finish7178-171#4889#5060
TOTALS10331517-484

Passing Charts

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