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BOSTON MARATHON 2025

Jacob Nazarenko

Bib: 4395•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 10%
Gender (Male)
#0 / 16105
Top 16%
Division (M18-39)
#0 / 5642
Top 37%
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
6:36/mi
20:30
↑ 97↓ 3451.5%
10K· 6.21 mi
6:33/mi
40:50
↑ 79↓ 1380.4%
15K· 9.32 mi
6:29/mi
1:00:59
↑ 67↓ 78
20K· 12.43 mi
6:33/mi
1:21:19
↑ 106↓ 860.1%
Half· 13.11 mi
6:23/mi
1:25:40
↑ 19↓ 370.5%
25K· 15.53 mi
6:34/mi
1:41:35
↑ 66↓ 880.2%
30K· 18.64 mi
6:40/mi
2:02:18
↑ 181↓ 1480.2%
20M
6:40/mi
2:11:21
↑ 64↓ 500.2%
21M
6:55/mi
2:18:16
↑ 106↓ 241.6%
35K· 21.75 mi
6:33/mi
2:23:10
↑ 17↓ 861.7%
23M
6:48/mi
2:31:41
↑ 23↓ 630.6%
24M
6:37/mi
2:38:18
↓ 821.3%
40K· 24.85 mi
6:27/mi
2:43:49
↓ 200.3%
25.2M
7:06/mi
2:46:16
↑ 13↓ 160.2%
Finish· 26.22 mi
6:10/mi
2:52:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:40
Pace6:32 /mi
2nd Half
Distance13.11 mi
Time1:26:53
Pace6:38 /mi
📊Positive Split: 1.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3820:306:3620:30
6:36
-
10K
6.21 mi10:42:5840:506:3420:20
6:33
-0:03
15K
9.32 mi11:03:071:00:596:3320:09
6:29
-0:04
20K
12.43 mi11:23:271:21:196:3320:20
6:33
+0:04
Half
13.11 mi11:27:481:25:406:324:21
6:23
-0:10
25K
15.53 mi11:43:431:41:356:3215:55
6:34
+0:11
30K
18.64 mi12:04:262:02:186:3420:43
6:40
+0:06
20M
20.00 mi12:13:292:11:216:349:03
6:40
0:00
21M
21.00 mi12:20:242:18:166:356:55
6:55
+0:15
35K
21.75 mi12:25:182:23:106:354:54
6:33
-0:22
23M
23.00 mi12:33:492:31:416:368:31
6:48
+0:15
24M
24.00 mi12:40:262:38:186:366:37
6:37
-0:11
40K
24.85 mi12:45:572:43:496:355:31
6:27
-0:10
25.2M
25.20 mi12:48:242:46:166:362:27
7:06
+0:39
Finish
26.22 mi12:54:412:52:336:356:17
6:10
-0:56

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

6:10 /mi

Average Pace

6:35 /mi

Slowest Pace

7:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:40

90% of race

Time at Steady Pace

17:53

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:35 /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 mi10:22:3820:306:3620:30
6:36
#4560
10K
6.21 mi10:42:5840:506:3420:20
6:33
#4281
15K
9.32 mi11:03:071:00:596:3320:09
6:29
#3971
20K
12.43 mi11:23:271:21:196:3320:20
6:33
#3782
Half
13.11 mi11:27:481:25:406:324:21
6:23
#3735
25K
15.53 mi11:43:431:41:356:3215:55
6:34
#3629
30K
18.64 mi12:04:262:02:186:3420:43
6:40
#3391
20M
20.00 mi12:13:292:11:216:349:03
6:40
#3257
21M
21.00 mi12:20:242:18:166:356:55
6:55
#3129
35K
21.75 mi12:25:182:23:106:354:54
6:33
#3087
23M
23.00 mi12:33:492:31:416:368:31
6:48
#3008
24M
24.00 mi12:40:262:38:186:366:37
6:37
#2965
40K
24.85 mi12:45:572:43:496:355:31
6:27
#2858
25.2M
25.20 mi12:48:242:46:166:362:27
7:06
#2831
Finish
26.22 mi12:54:412:52:336:356:17
6:10
#2727
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4560428342833456(Top 12%)3272(Top 20%)3272(Top 58%)
10K6.21 mi3.10 mi4281+2794025+2584025+2584021(Top 14%)3782(Top 23%)3782(Top 67%)
15K9.32 mi3.11 mi3971+3103742+2833742+2833456(Top 12%)3272(Top 20%)3272(Top 58%)
20K12.43 mi3.11 mi3782+1893568+1743568+1743370(Top 12%)3192(Top 20%)3192(Top 57%)
Half13.11 mi0.68 mi3735+473526+423526+422891(Top 10%)2758(Top 17%)2758(Top 49%)
25K15.53 mi2.42 mi3629+1063428+983428+983219(Top 11%)3047(Top 19%)3047(Top 54%)
30K18.64 mi3.11 mi3391+2383208+2203208+2202713(Top 10%)2567(Top 16%)2567(Top 45%)
20M20.00 mi1.36 mi3257+1343084+1243084+1242269(Top 8%)2143(Top 13%)2143(Top 38%)
21M21.00 mi1.00 mi3129+1282962+1222962+1221934(Top 7%)1823(Top 11%)1823(Top 32%)
35K21.75 mi0.75 mi3087+422924+382924+382687(Top 9%)2485(Top 15%)2485(Top 44%)
23M23.00 mi1.25 mi3008+792846+782846+782690(Top 9%)2473(Top 15%)2473(Top 44%)
24M24.00 mi1.00 mi2965+432804+422804+422542(Top 9%)2336(Top 15%)2336(Top 41%)
40K24.85 mi0.85 mi2858+1072705+992705+991442(Top 5%)1336(Top 8%)1336(Top 24%)
25.2M25.20 mi0.35 mi2831+272679+262679+261795(Top 6%)1634(Top 10%)1634(Top 29%)
Finish26.22 mi1.02 mi2727+1042580+992580+991414(Top 5%)1317(Top 8%)1317(Top 23%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21story building
+97ft-345ft

Overall

3456

Males

3272

M18-39

3272

5K→10K

3.1 - 6.2 mi

Top 14%
×5story building
+79ft-138ft

Overall

4021

Males

3782

M18-39

3782

10K→15K

6.2 - 9.3 mi

Top 12%
×3story building
+67ft-78ft

Overall

3456

Males

3272

M18-39

3272

15K→20K

9.3 - 12.4 mi

Top 12%
×5story building
+106ft-86ft

Overall

3370

Males

3192

M18-39

3192

20K→Half

12.4 - 13.1 mi

Top 10%
×2story building
+19ft-37ft

Overall

2891

Males

2758

M18-39

2758

Half→25K

13.1 - 15.5 mi

Top 11%
×4story building
+66ft-88ft

Overall

3219

Males

3047

M18-39

3047

25K→30K

15.5 - 18.6 mi

Top 10%
×9story building
+181ft-148ft

Overall

2713

Males

2567

M18-39

2567

30K→20M

18.6 - 20.0 mi

Top 8%
×5story building
+64ft-50ft

Overall

2269

Males

2143

M18-39

2143

20M→21M

20.0 - 21.0 mi

Top 7%
×8story building
+106ft-24ft

Overall

1934

Males

1823

M18-39

1823

21M→35K

21.0 - 21.8 mi

Top 9%
×7story building
+17ft-86ft

Overall

2687

Males

2485

M18-39

2485

35K→23M

21.8 - 23.0 mi

Top 9%
×5story building
+23ft-63ft

Overall

2690

Males

2473

M18-39

2473

23M→24M

23.0 - 24.0 mi

Top 9%
×6story building
+12ft-82ft

Overall

2542

Males

2336

M18-39

2336

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1442

Males

1336

M18-39

1336

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1795

Males

1634

M18-39

1634

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2story building
+22ft-21ft

Overall

1414

Males

1317

M18-39

1317

Passing Analysis

Category:
Athletes Passed
2020
Passed By
187
Net Change
+1833
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4560
5K → 10K32546+279#4560#4281
10K → 15K32212+310#4281#3971
15K → 20K20415+189#3971#3782
20K → Half470+47#3782#3735
Half → 25K12620+106#3735#3629
25K → 30K25113+238#3629#3391
30K → 20M1439+134#3391#3257
20M → 21M1357+128#3257#3129
21M → 35K5412+42#3129#3087
35K → 23M10526+79#3087#3008
23M → 24M5916+43#3008#2965
24M → 40K1092+107#2965#2858
40K → 25.2M325+27#2858#2831
25.2M → Finish1084+104#2831#2727
TOTALS2020187+1833
📊

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