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BOSTON MARATHON 2025

Toby Duncan

Bib: 31654•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 41%
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
7:23/mi
22:55
↑ 97↓ 3451.5%
10K· 6.21 mi
7:08/mi
45:04
↑ 79↓ 1380.4%
15K· 9.32 mi
7:23/mi
1:07:59
↑ 67↓ 78
20K· 12.43 mi
7:29/mi
1:31:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:27/mi
1:36:18
↑ 19↓ 370.5%
25K· 15.53 mi
7:30/mi
1:54:29
↑ 66↓ 880.2%
30K· 18.64 mi
8:01/mi
2:19:24
↑ 181↓ 1480.2%
20M
8:21/mi
2:30:45
↑ 64↓ 500.2%
21M
9:19/mi
2:40:04
↑ 106↓ 241.6%
35K· 21.75 mi
8:17/mi
2:46:16
↑ 17↓ 861.7%
23M
8:48/mi
2:57:17
↑ 23↓ 630.6%
24M
8:34/mi
3:05:51
↓ 821.3%
40K· 24.85 mi
8:32/mi
3:13:09
↓ 200.3%
25.2M
9:17/mi
3:16:21
↑ 13↓ 160.2%
Finish· 26.22 mi
8:18/mi
3:24:48
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:18
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:48:30
Pace8:17 /mi
📊Positive Split: 12.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:3122:557:2322:55
7:23
-
10K
6.21 mi12:06:4045:047:1522:09
7:08
-0:15
15K
9.32 mi12:29:351:07:597:1822:55
7:23
+0:15
20K
12.43 mi12:52:491:31:137:2023:14
7:29
+0:06
Half
13.11 mi12:57:541:36:187:215:05
7:27
-0:02
25K
15.53 mi13:16:051:54:297:2218:11
7:30
+0:03
30K
18.64 mi13:41:002:19:247:2924:55
8:01
+0:31
20M
20.00 mi13:52:212:30:457:3211:21
8:21
+0:20
21M
21.00 mi14:01:402:40:047:379:19
9:19
+0:58
35K
21.75 mi14:07:522:46:167:396:12
8:17
-1:02
23M
23.00 mi14:18:532:57:177:4211:01
8:48
+0:31
24M
24.00 mi14:27:273:05:517:458:34
8:34
-0:14
40K
24.85 mi14:34:453:13:097:467:18
8:32
-0:02
25.2M
25.20 mi14:37:573:16:217:483:12
9:17
+0:45
Finish
26.22 mi14:46:243:24:487:498:27
8:18
-0:59

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

7:08 /mi

Average Pace

7:49 /mi

Slowest Pace

9:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:29

56% of race

Time at Steady Pace

1:06:47

33% of race

Time at Slower Pace

23:32

11% of race

Average Pace: 7:49 /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 mi11:44:3122:557:2322:55
7:23
#11096
10K
6.21 mi12:06:4045:047:1522:09
7:08
#9909
15K
9.32 mi12:29:351:07:597:1822:55
7:23
#10154
20K
12.43 mi12:52:491:31:137:2023:14
7:29
#10220
Half
13.11 mi12:57:541:36:187:215:05
7:27
#10263
25K
15.53 mi13:16:051:54:297:2218:11
7:30
#10183
30K
18.64 mi13:41:002:19:247:2924:55
8:01
#10386
20M
20.00 mi13:52:212:30:457:3211:21
8:21
#10580
21M
21.00 mi14:01:402:40:047:379:19
9:19
#10857
35K
21.75 mi14:07:522:46:167:396:12
8:17
#10962
23M
23.00 mi14:18:532:57:177:4211:01
8:48
#11201
24M
24.00 mi14:27:273:05:517:458:34
8:34
#11354
40K
24.85 mi14:34:453:13:097:467:18
8:32
#11450
25.2M
25.20 mi14:37:573:16:217:483:12
9:17
#11466
Finish
26.22 mi14:46:243:24:487:498:27
8:18
#11614
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi110968738873810644(Top 37%)8422(Top 52%)8422(Top 149%)
10K6.21 mi3.10 mi9909+11878123+6158123+6158918(Top 31%)7556(Top 47%)7556(Top 134%)
15K9.32 mi3.11 mi10154-2458219-968219-9610644(Top 37%)8422(Top 52%)8422(Top 149%)
20K12.43 mi3.11 mi10220-668218+18218+110563(Top 37%)8294(Top 51%)8294(Top 147%)
Half13.11 mi0.68 mi10263-438238-208238-2011271(Top 40%)8682(Top 54%)8682(Top 154%)
25K15.53 mi2.42 mi10183+808158+808158+809944(Top 35%)7844(Top 49%)7844(Top 139%)
30K18.64 mi3.11 mi10386-2038214-568214-5611527(Top 41%)8445(Top 52%)8445(Top 150%)
20M20.00 mi1.36 mi10580-1948258-448258-4412818(Top 45%)8913(Top 55%)8913(Top 158%)
21M21.00 mi1.00 mi10857-2778351-938351-9315199(Top 54%)9859(Top 61%)9859(Top 175%)
35K21.75 mi0.75 mi10962-1058382-318382-3114143(Top 50%)9340(Top 58%)9340(Top 166%)
23M23.00 mi1.25 mi11201-2398450-688450-6815083(Top 53%)9658(Top 60%)9658(Top 171%)
24M24.00 mi1.00 mi11354-1538486-368486-3614897(Top 52%)9524(Top 59%)9524(Top 169%)
40K24.85 mi0.85 mi11450-968490-48490-413641(Top 48%)8822(Top 55%)8822(Top 156%)
25.2M25.20 mi0.35 mi11466-168486+48486+413289(Top 47%)8595(Top 53%)8595(Top 152%)
Finish26.22 mi1.02 mi11614-1488522-368522-3614836(Top 52%)9406(Top 58%)9406(Top 167%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

10644

Males

8422

M18-39

8422

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

8918

Males

7556

M18-39

7556

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

10644

Males

8422

M18-39

8422

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

10563

Males

8294

M18-39

8294

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

11271

Males

8682

M18-39

8682

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9944

Males

7844

M18-39

7844

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11527

Males

8445

M18-39

8445

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12818

Males

8913

M18-39

8913

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

15199

Males

9859

M18-39

9859

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

14143

Males

9340

M18-39

9340

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

15083

Males

9658

M18-39

9658

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

14897

Males

9524

M18-39

9524

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13641

Males

8822

M18-39

8822

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13289

Males

8595

M18-39

8595

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

14836

Males

9406

M18-39

9406

Passing Analysis

Category:
Athletes Passed
2211*
Passed By
2726
Net Change
-518
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11096
5K → 10K1198*11+1187#11096#9909
10K → 15K104348-245#9909#10154
15K → 20K158223-66#10154#10220
20K → Half1659-43#10220#10263
Half → 25K193113+80#10263#10183
25K → 30K176378-203#10183#10386
30K → 20M70264-194#10386#10580
20M → 21M41318-277#10580#10857
21M → 35K33138-105#10857#10962
35K → 23M50289-239#10962#11201
23M → 24M49202-153#11201#11354
24M → 40K48144-96#11354#11450
40K → 25.2M3147-16#11450#11466
25.2M → Finish44192-148#11466#11614
TOTALS2211*2726-518

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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