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BOSTON MARATHON 2025

Leon Thers

Bib: 30305•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

Start
0:00:00
Race begins
5K· 3.11 mi
28:20
Rank: #22919
Start → 5K
9:07/mi
28:20 split
10K· 6.21 mi
56:55
Rank: #23062 (-143)
5K → 10K
9:12/mi
28:35 split
15K· 9.32 mi
1:27:36
Rank: #23742 (-680)
10K → 15K
9:53/mi
30:41 split
20K· 12.43 mi
1:59:03
Rank: #23946 (-204)
15K → 20K
10:07/mi
31:27 split
Half· 13.11 mi
2:05:39
Rank: #23957 (-11)
20K → Half
9:40/mi
6:36 split
25K· 15.53 mi
2:32:29
Rank: #24288 (-331)
Half → 25K
11:04/mi
26:50 split
30K· 18.64 mi
3:09:44
Rank: #24620 (-332)
25K → 30K
11:59/mi
37:15 split
20M
3:24:36
Rank: #24549 (+71)
30K → 20M
10:56/mi
14:52 split
21M
3:36:45
Rank: #24508 (+41)
20M → 21M
12:09/mi
12:09 split
35K· 21.75 mi
3:44:38
Rank: #24474 (+34)
21M → 35K
10:32/mi
7:53 split
23M
3:58:08
Rank: #24385 (+89)
35K → 23M
10:47/mi
13:30 split
24M
4:08:20
Rank: #24274 (+111)
23M → 24M
10:12/mi
10:12 split
40K· 24.85 mi
4:17:37
Rank: #24236 (+38)
24M → 40K
10:51/mi
9:17 split
25.2M
4:21:51
Rank: #24228 (+8)
40K → 25.2M
12:17/mi
4:14 split
Finish· 26.22 mi
4:31:52
Rank: #24177 (+51)
25.2M → Finish
9:50/mi
10:01 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:39
Pace9:35 /mi
2nd Half
Distance13.11 mi
Time2:26:13
Pace11:09 /mi
📊Positive Split: 16.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:2428:209:0728:20
9:07
-
10K
6.21 mi12:20:5956:559:1028:35
9:12
+0:05
15K
9.32 mi12:51:401:27:369:2430:41
9:53
+0:41
20K
12.43 mi13:23:071:59:039:3531:27
10:07
+0:14
Half
13.11 mi13:29:432:05:399:356:36
9:40
-0:27
25K
15.53 mi13:56:332:32:299:4926:50
11:04
+1:24
30K
18.64 mi14:33:483:09:4410:1137:15
11:59
+0:55
20M
20.00 mi14:48:403:24:3610:1414:52
10:56
-1:03
21M
21.00 mi15:00:493:36:4510:1912:09
12:09
+1:13
35K
21.75 mi15:08:423:44:3810:207:53
10:32
-1:37
23M
23.00 mi15:22:123:58:0810:2113:30
10:47
+0:15
24M
24.00 mi15:32:244:08:2010:2110:12
10:12
-0:35
40K
24.85 mi15:41:414:17:3710:229:17
10:51
+0:39
25.2M
25.20 mi15:45:554:21:5110:234:14
12:17
+1:26
Finish
26.22 mi15:55:564:31:5210:2310:01
9:50
-2:27

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

9:07 /mi

Average Pace

10:23 /mi

Slowest Pace

12:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:13

38% of race

Time at Steady Pace

1:27:11

32% of race

Time at Slower Pace

1:20:28

30% of race

Average Pace: 10:22 /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 mi11:52:2428:209:0728:20
9:07
#22919
10K
6.21 mi12:20:5956:559:1028:35
9:12
#23062
15K
9.32 mi12:51:401:27:369:2430:41
9:53
#23742
20K
12.43 mi13:23:071:59:039:3531:27
10:07
#23946
Half
13.11 mi13:29:432:05:399:356:36
9:40
#23957
25K
15.53 mi13:56:332:32:299:4926:50
11:04
#24288
30K
18.64 mi14:33:483:09:4410:1137:15
11:59
#24620
20M
20.00 mi14:48:403:24:3610:1414:52
10:56
#24549
21M
21.00 mi15:00:493:36:4510:1912:09
12:09
#24508
35K
21.75 mi15:08:423:44:3810:207:53
10:32
#24474
23M
23.00 mi15:22:123:58:0810:2113:30
10:47
#24385
24M
24.00 mi15:32:244:08:2010:2110:12
10:12
#24274
40K
24.85 mi15:41:414:17:3710:229:17
10:51
#24236
25.2M
25.20 mi15:45:554:21:5110:234:14
12:17
#24228
Finish
26.22 mi15:55:564:31:5210:2310:01
9:50
#24177
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi22919137311373124714(Top 87%)14587(Top 91%)14587(Top 611%)
10K6.21 mi3.10 mi23062-14313818-8713818-8723199(Top 82%)13903(Top 86%)13903(Top 583%)
15K9.32 mi3.11 mi23742-68014139-32114139-32124714(Top 87%)14587(Top 91%)14587(Top 611%)
20K12.43 mi3.11 mi23946-20414219-8014219-8024475(Top 86%)14440(Top 90%)14440(Top 605%)
Half13.11 mi0.68 mi23957-1114223-414223-424023(Top 85%)14244(Top 88%)14244(Top 597%)
25K15.53 mi2.42 mi24288-33114354-13114354-13125300(Top 89%)14766(Top 92%)14766(Top 619%)
30K18.64 mi3.11 mi24620-33214485-13114485-13125584(Top 90%)14800(Top 92%)14800(Top 620%)
20M20.00 mi1.36 mi24549+7114445+4014445+4023477(Top 83%)13748(Top 85%)13748(Top 576%)
21M21.00 mi1.00 mi24508+4114406+3914406+3923846(Top 84%)13843(Top 86%)13843(Top 580%)
35K21.75 mi0.75 mi24474+3414382+2414382+2423253(Top 82%)13513(Top 84%)13513(Top 566%)
23M23.00 mi1.25 mi24385+8914325+5714325+5722708(Top 80%)13207(Top 82%)13207(Top 554%)
24M24.00 mi1.00 mi24274+11114269+5614269+5621941(Top 77%)12787(Top 79%)12787(Top 536%)
40K24.85 mi0.85 mi24236+3814230+3914230+3922813(Top 80%)13153(Top 82%)13153(Top 551%)
25.2M25.20 mi0.35 mi24228+814217+1314217+1323752(Top 84%)13645(Top 85%)13645(Top 572%)
Finish26.22 mi1.02 mi24177+5114186+3114186+3122383(Top 79%)12966(Top 81%)12966(Top 543%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

24714

Males

14587

M45-49

14587

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

23199

Males

13903

M45-49

13903

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

24714

Males

14587

M45-49

14587

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

24475

Males

14440

M45-49

14440

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

24023

Males

14244

M45-49

14244

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

25300

Males

14766

M45-49

14766

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

25584

Males

14800

M45-49

14800

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

23477

Males

13748

M45-49

13748

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

23846

Males

13843

M45-49

13843

21M→35K

21.0 - 21.8 mi

Top 82%
×7story building
+17ft-86ft

Overall

23253

Males

13513

M45-49

13513

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

22708

Males

13207

M45-49

13207

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

21941

Males

12787

M45-49

12787

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22813

Males

13153

M45-49

13153

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

23752

Males

13645

M45-49

13645

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2story building
+22ft-21ft

Overall

22383

Males

12966

M45-49

12966

Passing Analysis

Category:
Athletes Passed
972
Passed By
2230
Net Change
-1258
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22919
5K → 10K165308-143#22919#23062
10K → 15K41721-680#23062#23742
15K → 20K71275-204#23742#23946
20K → Half2233-11#23946#23957
Half → 25K40371-331#23957#24288
25K → 30K55387-332#24288#24620
30K → 20M8413+71#24620#24549
20M → 21M7938+41#24549#24508
21M → 35K4511+34#24508#24474
35K → 23M10920+89#24474#24385
23M → 24M1154+111#24385#24274
24M → 40K6123+38#24274#24236
40K → 25.2M2315+8#24236#24228
25.2M → Finish6211+51#24228#24177
TOTALS9722230-1258
📊

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