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BOSTON MARATHON 2025

Christian De Guzman

Bib: 14125•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
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
7:39/mi
23:45
↑ 97↓ 3451.5%
10K· 6.21 mi
8:00/mi
48:35
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:13:33
↑ 67↓ 78
20K· 12.43 mi
7:55/mi
1:38:10
↑ 106↓ 860.1%
Half· 13.11 mi
7:33/mi
1:43:19
↑ 19↓ 370.5%
25K· 15.53 mi
7:56/mi
2:02:34
↑ 66↓ 880.2%
30K· 18.64 mi
8:33/mi
2:29:07
↑ 181↓ 1480.2%
20M
8:24/mi
2:40:32
↑ 64↓ 500.2%
21M
8:38/mi
2:49:10
↑ 106↓ 241.6%
35K· 21.75 mi
8:33/mi
2:55:34
↑ 17↓ 861.7%
23M
9:08/mi
3:07:00
↑ 23↓ 630.6%
24M
9:06/mi
3:16:06
↓ 821.3%
40K· 24.85 mi
8:54/mi
3:23:43
↓ 200.3%
25.2M
9:23/mi
3:26:57
↑ 13↓ 160.2%
Finish· 26.22 mi
8:02/mi
3:35:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:19
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:51:49
Pace8:32 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:4223:457:3923:45
7:39
-
10K
6.21 mi11:19:3248:357:4924:50
8:00
+0:21
15K
9.32 mi11:44:301:13:337:5324:58
8:02
+0:02
20K
12.43 mi12:09:071:38:107:5424:37
7:55
-0:07
Half
13.11 mi12:14:161:43:197:535:09
7:33
-0:22
25K
15.53 mi12:33:312:02:347:5319:15
7:56
+0:23
30K
18.64 mi13:00:042:29:078:0026:33
8:33
+0:37
20M
20.00 mi13:11:292:40:328:0211:25
8:24
-0:09
21M
21.00 mi13:20:072:49:108:038:38
8:38
+0:14
35K
21.75 mi13:26:312:55:348:046:24
8:33
-0:05
23M
23.00 mi13:37:573:07:008:0811:26
9:08
+0:35
24M
24.00 mi13:47:033:16:068:109:06
9:06
-0:02
40K
24.85 mi13:54:403:23:438:127:37
8:54
-0:12
25.2M
25.20 mi13:57:543:26:578:133:14
9:23
+0:29
Finish
26.22 mi14:06:053:35:088:138:11
8:02
-1:21

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

7:33 /mi

Average Pace

8:13 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:45

61% of race

Time at Steady Pace

53:00

25% of race

Time at Slower Pace

31:23

15% of race

Average Pace: 8:12 /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 mi10:54:4223:457:3923:45
7:39
#13462
10K
6.21 mi11:19:3248:357:4924:50
8:00
#14925
15K
9.32 mi11:44:301:13:337:5324:58
8:02
#15423
20K
12.43 mi12:09:071:38:107:5424:37
7:55
#15091
Half
13.11 mi12:14:161:43:197:535:09
7:33
#14925
25K
15.53 mi12:33:312:02:347:5319:15
7:56
#14635
30K
18.64 mi13:00:042:29:078:0026:33
8:33
#14725
20M
20.00 mi13:11:292:40:328:0211:25
8:24
#14549
21M
21.00 mi13:20:072:49:108:038:38
8:38
#14315
35K
21.75 mi13:26:312:55:348:046:24
8:33
#14385
23M
23.00 mi13:37:573:07:008:0811:26
9:08
#14528
24M
24.00 mi13:47:033:16:068:109:06
9:06
#14688
40K
24.85 mi13:54:403:23:438:127:37
8:54
#14711
25.2M
25.20 mi13:57:543:26:578:133:14
9:23
#14682
Finish
26.22 mi14:06:053:35:088:138:11
8:02
#14599
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi134629847984716308(Top 57%)10938(Top 68%)10938(Top 458%)
10K6.21 mi3.10 mi14925-146310372-52510372-52516412(Top 58%)10988(Top 68%)10988(Top 461%)
15K9.32 mi3.11 mi15423-49810579-20710579-20716308(Top 57%)10938(Top 68%)10938(Top 458%)
20K12.43 mi3.11 mi15091+33210416+16310416+16314290(Top 50%)10004(Top 62%)10004(Top 419%)
Half13.11 mi0.68 mi14925+16610332+8410332+8412115(Top 43%)9087(Top 56%)9087(Top 381%)
25K15.53 mi2.42 mi14635+29010177+15510177+15513412(Top 47%)9486(Top 59%)9486(Top 398%)
30K18.64 mi3.11 mi14725-9010160+1710160+1715034(Top 53%)10066(Top 63%)10066(Top 422%)
20M20.00 mi1.36 mi14549+17610065+9510065+9513156(Top 46%)9065(Top 56%)9065(Top 380%)
21M21.00 mi1.00 mi14315+2349942+1239942+12311282(Top 40%)8026(Top 50%)8026(Top 336%)
35K21.75 mi0.75 mi14385-709957-159957-1515773(Top 56%)10075(Top 63%)10075(Top 422%)
23M23.00 mi1.25 mi14528-1439985-289985-2816984(Top 60%)10497(Top 65%)10497(Top 440%)
24M24.00 mi1.00 mi14688-16010021-3610021-3617846(Top 63%)10849(Top 67%)10849(Top 455%)
40K24.85 mi0.85 mi14711-239999+229999+2215777(Top 56%)9805(Top 61%)9805(Top 411%)
25.2M25.20 mi0.35 mi14682+299981+189981+1813838(Top 49%)8872(Top 55%)8872(Top 372%)
Finish26.22 mi1.02 mi14599+839911+709911+7013065(Top 46%)8566(Top 53%)8566(Top 359%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

16308

Males

10938

M45-49

10938

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16412

Males

10988

M45-49

10988

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

16308

Males

10938

M45-49

10938

15K→20K

9.3 - 12.4 mi

Top 50%
×5story building
+106ft-86ft

Overall

14290

Males

10004

M45-49

10004

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

12115

Males

9087

M45-49

9087

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

13412

Males

9486

M45-49

9486

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

15034

Males

10066

M45-49

10066

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

13156

Males

9065

M45-49

9065

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

11282

Males

8026

M45-49

8026

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

15773

Males

10075

M45-49

10075

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

16984

Males

10497

M45-49

10497

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

17846

Males

10849

M45-49

10849

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15777

Males

9805

M45-49

9805

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13838

Males

8872

M45-49

8872

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

13065

Males

8566

M45-49

8566

Passing Analysis

Category:
Athletes Passed
2075
Passed By
3212
Net Change
-1137
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13462
5K → 10K441507-1463#13462#14925
10K → 15K83581-498#14925#15423
15K → 20K39058+332#15423#15091
20K → Half1682+166#15091#14925
Half → 25K32434+290#14925#14635
25K → 30K216306-90#14635#14725
30K → 20M23357+176#14725#14549
20M → 21M24612+234#14549#14315
21M → 35K44114-70#14315#14385
35K → 23M65208-143#14385#14528
23M → 24M34194-160#14528#14688
24M → 40K6184-23#14688#14711
40K → 25.2M5425+29#14711#14682
25.2M → Finish11330+83#14682#14599
TOTALS20753212-1137
📊

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