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SF MARATHON 1ST HALF 2026

Seth DeMasi

Bib: 12333•M•Age: 30

Austin, TX

0:00
0:00
/ mi
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Overall
#0 / 6575
Top 36%
Gender (Male)
#0 / 3619
Top 46%
Division (M30-34)
#0 / 772
Top 46%
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
11:00/mi
22:00
→ flat
4M
10:04/mi
42:07
↑ 67↓ 69
6M
10:39/mi
1:03:26
↑ 1231.1%
8M
9:16/mi
1:21:59
↑ 166↓ 531.1%
9.6M
9:16/mi
1:36:49
↑ 68↓ 1931.5%
10M
16:59/mi
1:43:36
↓ 241.1%
10.5M
4:32/mi
1:45:52
↓ 732.7%
12M
12:00/mi
2:03:52
↑ 2803.2%
Finish· 13.11 mi
8:46/mi
2:13:35
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:03:26
Pace10:34 /mi
2nd Half
Distance7.11 mi
Time1:10:09
Pace9:52 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:07:4922:0011:0022:00
11:00
-
4M
4.00 mi07:27:5642:0710:3220:07
10:04
-0:56
6M
6.00 mi07:49:151:03:2610:3421:19
10:39
+0:35
8M
8.00 mi08:07:481:21:5910:1518:33
9:16
-1:23
9.6M
9.60 mi08:22:381:36:4910:0514:50
9:16
0:00
10M
10.00 mi08:29:251:43:3610:226:47
16:59
+7:43
10.5M
10.50 mi08:31:411:45:5210:052:16
4:32
-12:27
12M
12.00 mi08:49:412:03:5210:1918:00
12:00
+7:28
Finish
13.11 mi08:59:242:13:3510:119:43
8:46
-3:14

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

4:32 /mi

Average Pace

10:11 /mi

Slowest Pace

16:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16

2% of race

Time at Steady Pace

1:46:32

80% of race

Time at Slower Pace

24:47

19% of race

Average Pace: 10:11 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
2M
2.00 mi07:07:4922:0011:0022:00
11:00
#4693
4M
4.00 mi07:27:5642:0710:3220:07
10:04
#3738
6M
6.00 mi07:49:151:03:2610:3421:19
10:39
#3608
8M
8.00 mi08:07:481:21:5910:1518:33
9:16
#2986
9.6M
9.60 mi08:22:381:36:4910:0514:50
9:16
#2952
10M
10.00 mi08:29:251:43:3610:226:47
16:59
#2818
10.5M
10.50 mi08:31:411:45:5210:052:16
4:32
#2796
12M
12.00 mi08:49:412:03:5210:1918:00
12:00
#2441
Finish
13.11 mi08:59:242:13:3510:119:43
8:46
#2343
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 27%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

9:03

Segment Time

10:04/mi

Pace

0.90 mi

Distance

Overall

1767

Men

1308

Division

294

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
2M2.00 mi2.00 mi469329116081228(Top 19%)929(Top 26%)215(Top 28%)
4M4.00 mi2.00 mi3738+9552445+466509+992888(Top 44%)1988(Top 55%)413(Top 53%)
6M6.00 mi2.00 mi3608+1302369+76493+163498(Top 53%)2320(Top 64%)492(Top 64%)
8M8.00 mi2.00 mi2986+6222069+300434+591548(Top 24%)1191(Top 33%)262(Top 34%)
9.6M9.60 mi1.60 mi2952+342028+41422+123091(Top 47%)1924(Top 53%)418(Top 54%)
10M10.00 mi0.40 mi2818+1341940+88406+161810(Top 28%)1317(Top 36%)291(Top 38%)
10.5M10.50 mi0.50 mi2796+221925+15403+31932(Top 29%)1412(Top 39%)315(Top 41%)
12M12.00 mi1.50 mi2441+3551714+211361+421228(Top 19%)929(Top 26%)215(Top 28%)
Finish13.11 mi1.11 mi2343+981659+55355+61384(Top 21%)1055(Top 29%)232(Top 30%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 19%
~flat
+5ft-3ft

Overall

1228

Males

929

M30-34

216

2M→4M

2.0 - 4.0 mi

Top 44%
×4story building
+67ft-69ft

Overall

2888

Males

1988

M30-34

415

4M→6M

4.0 - 6.0 mi

Top 53%
×9story building
+123ft-9ft

Overall

3498

Males

2320

M30-34

494

6M→8M

6.0 - 8.0 mi

Top 24%
×12story building
+166ft-53ft

Overall

1548

Males

1191

M30-34

263

8M→9.6M

8.0 - 9.6 mi

Top 47%
×13story building
+68ft-193ft

Overall

3091

Males

1924

M30-34

419

9.6M→10M

9.6 - 10.0 mi

Top 28%
×2story building
+0ft-24ft

Overall

1810

Males

1317

M30-34

292

10M→10.5M

10.0 - 10.5 mi

Top 29%
×6story building
+1ft-73ft

Overall

1932

Males

1412

M30-34

316

10.5M→12M

10.5 - 12.0 mi

Top 19%
×21story building
+280ft-26ft

Overall

1228

Males

929

M30-34

216

12M→Finish

12.0 - 13.1 mi

Top 21%
×7story building
+14ft-89ft

Overall

1384

Males

1055

M30-34

232

Passing Analysis

Category:
Athletes Passed
2541*
Passed By
191
Net Change
+2350
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#4693
2M → 4M9572+955#4693#3738
4M → 6M190*60+130#3738#3608
6M → 8M626*4+622#3608#2986
8M → 9.6M145111+34#2986#2952
9.6M → 10M1351+134#2952#2818
10M → 10.5M220+22#2818#2796
10.5M → 12M3616+355#2796#2441
12M → Finish105*7+98#2441#2343
TOTALS2541*191+2350

* 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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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events