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BOSTON MARATHON 2025

Milton Olsoff

Bib: 29312•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
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
9:19/mi
28:58
↑ 97↓ 3451.5%
10K· 6.21 mi
9:16/mi
57:46
↑ 79↓ 1380.4%
15K· 9.32 mi
9:32/mi
1:27:22
↑ 67↓ 78
20K· 12.43 mi
10:21/mi
1:59:31
↑ 106↓ 860.1%
Half· 13.11 mi
9:54/mi
2:06:16
↑ 19↓ 370.5%
25K· 15.53 mi
10:19/mi
2:31:18
↑ 66↓ 880.2%
30K· 18.64 mi
10:56/mi
3:05:17
↑ 181↓ 1480.2%
20M
11:30/mi
3:20:55
↑ 64↓ 500.2%
21M
10:30/mi
3:31:25
↑ 106↓ 241.6%
35K· 21.75 mi
11:30/mi
3:40:01
↑ 17↓ 861.7%
23M
11:21/mi
3:54:14
↑ 23↓ 630.6%
24M
10:40/mi
4:04:54
↓ 821.3%
40K· 24.85 mi
11:29/mi
4:14:43
↓ 200.3%
25.2M
12:14/mi
4:18:56
↑ 13↓ 160.2%
Finish· 26.22 mi
10:56/mi
4:30:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:16
Pace9:38 /mi
2nd Half
Distance13.11 mi
Time2:23:48
Pace10:58 /mi
📊Positive Split: 13.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:3728:589:1928:58
9:19
-
10K
6.21 mi12:15:2557:469:1828:48
9:16
-0:03
15K
9.32 mi12:45:011:27:229:2229:36
9:32
+0:16
20K
12.43 mi13:17:101:59:319:3732:09
10:21
+0:49
Half
13.11 mi13:23:552:06:169:386:45
9:54
-0:27
25K
15.53 mi13:48:572:31:189:4425:02
10:19
+0:25
30K
18.64 mi14:22:563:05:179:5633:59
10:56
+0:37
20M
20.00 mi14:38:343:20:5510:0315:38
11:30
+0:34
21M
21.00 mi14:49:043:31:2510:0410:30
10:30
-1:00
35K
21.75 mi14:57:403:40:0110:078:36
11:30
+1:00
23M
23.00 mi15:11:533:54:1410:1114:13
11:21
-0:09
24M
24.00 mi15:22:334:04:5410:1210:40
10:40
-0:41
40K
24.85 mi15:32:224:14:4310:159:49
11:29
+0:49
25.2M
25.20 mi15:36:354:18:5610:174:13
12:14
+0:45
Finish
26.22 mi15:47:434:30:0410:1811:08
10:56
-1:18

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

9:16 /mi

Average Pace

10:18 /mi

Slowest Pace

12:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:07

35% of race

Time at Steady Pace

2:03:28

46% of race

Time at Slower Pace

52:29

19% of race

Average Pace: 10:18 /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 mi11:46:3728:589:1928:58
9:19
#23632
10K
6.21 mi12:15:2557:469:1828:48
9:16
#23549
15K
9.32 mi12:45:011:27:229:2229:36
9:32
#23669
20K
12.43 mi13:17:101:59:319:3732:09
10:21
#24072
Half
13.11 mi13:23:552:06:169:386:45
9:54
#24100
25K
15.53 mi13:48:572:31:189:4425:02
10:19
#24078
30K
18.64 mi14:22:563:05:179:5633:59
10:56
#24070
20M
20.00 mi14:38:343:20:5510:0315:38
11:30
#24106
21M
21.00 mi14:49:043:31:2510:0410:30
10:30
#23903
35K
21.75 mi14:57:403:40:0110:078:36
11:30
#23971
23M
23.00 mi15:11:533:54:1410:1114:13
11:21
#23950
24M
24.00 mi15:22:334:04:5410:1210:40
10:40
#23925
40K
24.85 mi15:32:224:14:4310:159:49
11:29
#23951
25.2M
25.20 mi15:36:354:18:5610:174:13
12:14
#23953
Finish
26.22 mi15:47:434:30:0410:1811:08
10:56
#24018
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23632140691406923818(Top 84%)14202(Top 88%)14202(Top 252%)
10K6.21 mi3.10 mi23549+8314035+3414035+3423421(Top 82%)13991(Top 87%)13991(Top 248%)
15K9.32 mi3.11 mi23669-12014108-7314108-7323818(Top 84%)14202(Top 88%)14202(Top 252%)
20K12.43 mi3.11 mi24072-40314280-17214280-17224913(Top 88%)14638(Top 91%)14638(Top 259%)
Half13.11 mi0.68 mi24100-2814287-714287-724588(Top 87%)14476(Top 90%)14476(Top 257%)
25K15.53 mi2.42 mi24078+2214264+2314264+2324007(Top 85%)14202(Top 88%)14202(Top 252%)
30K18.64 mi3.11 mi24070+814240+2414240+2423901(Top 84%)14022(Top 87%)14022(Top 249%)
20M20.00 mi1.36 mi24106-3614230+1014230+1024537(Top 86%)14235(Top 88%)14235(Top 252%)
21M21.00 mi1.00 mi23903+20314127+10314127+10320017(Top 70%)12050(Top 75%)12050(Top 214%)
35K21.75 mi0.75 mi23971-6814143-1614143-1625087(Top 88%)14391(Top 89%)14391(Top 255%)
23M23.00 mi1.25 mi23950+2114111+3214111+3223997(Top 84%)13843(Top 86%)13843(Top 245%)
24M24.00 mi1.00 mi23925+2514097+1414097+1423237(Top 82%)13428(Top 83%)13428(Top 238%)
40K24.85 mi0.85 mi23951-2614094+314094+324101(Top 85%)13824(Top 86%)13824(Top 245%)
25.2M25.20 mi0.35 mi23953-214088+614088+623651(Top 83%)13591(Top 84%)13591(Top 241%)
Finish26.22 mi1.02 mi24018-6514104-1614104-1625212(Top 89%)14391(Top 89%)14391(Top 255%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

23818

Males

14202

M18-39

14202

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

23421

Males

13991

M18-39

13991

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

23818

Males

14202

M18-39

14202

15K→20K

9.3 - 12.4 mi

Top 88%
×5story building
+106ft-86ft

Overall

24913

Males

14638

M18-39

14638

20K→Half

12.4 - 13.1 mi

Top 87%
×2story building
+19ft-37ft

Overall

24588

Males

14476

M18-39

14476

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

24007

Males

14202

M18-39

14202

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

23901

Males

14022

M18-39

14022

30K→20M

18.6 - 20.0 mi

Top 86%
×5story building
+64ft-50ft

Overall

24537

Males

14235

M18-39

14235

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

20017

Males

12050

M18-39

12050

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

25087

Males

14391

M18-39

14391

35K→23M

21.8 - 23.0 mi

Top 84%
×5story building
+23ft-63ft

Overall

23997

Males

13843

M18-39

13843

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

23237

Males

13428

M18-39

13428

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

24101

Males

13824

M18-39

13824

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23651

Males

13591

M18-39

13591

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2story building
+22ft-21ft

Overall

25212

Males

14391

M18-39

14391

Passing Analysis

Category:
Athletes Passed
1252
Passed By
1638
Net Change
-386
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23632
5K → 10K279196+83#23632#23549
10K → 15K134254-120#23549#23669
15K → 20K37440-403#23669#24072
20K → Half1947-28#24072#24100
Half → 25K131109+22#24100#24078
25K → 30K155147+8#24078#24070
30K → 20M67103-36#24070#24106
20M → 21M2052+203#24106#23903
21M → 35K2189-68#23903#23971
35K → 23M7554+21#23971#23950
23M → 24M5934+25#23950#23925
24M → 40K3258-26#23925#23951
40K → 25.2M1416-2#23951#23953
25.2M → Finish2489-65#23953#24018
TOTALS12521638-386
📊

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